Showing posts with label a. Show all posts
Showing posts with label a. Show all posts
Thursday, December 19, 2013
if you have a cell phone that has a GPS on it
Most people are in great pains when they have the feelings of becoming the victim of cheating.
Be careful to go on for only professional sim car spies because there are some that are not worth your penny. Also, be careful to only use this technology for people that are subject or close to
you. The law really frowns at people who breach other peoples privacy.What good will a cell phone GPS locator do for you? You may be wondering why most smart phones today come with navigation
systems and all that. Well, it is simple, it both keeps you on track as well as it helps loved ones to know where you are at any given time. For instance, if you find yourself in a tight corner and
you cannot tell how you got there, if you have a cell phone that has a GPS on it, you can retrace your footsteps and get back on track in no time rather than going round in circles. Also, if at all
you delay and cant get home when you should, your family and friends will be able to know where you are and therefore will not worry so much.
Accessible entirely from the comfort of your own computer, cell phone spy software makes keeping tabs on your loved one simple. Installation is relatively easy as well-all you need to do is create
an information account online through their website, follow the directions, and reboot the phone. In most cases it only takes a few minutes. Once installed, youll be able to monitor the phone
immediately. There is no limit as to how much you can use the software, and there is no need for upgrades or reinstallations.
You can learn more about how to catch cheating girlfriend by reading up on reviews. These, for example, can tell you if the software in question is compatible with Blackberry phones, iPhones,
Symbian S60, Nokia, Windows Mobile, smartphones, and other mobiles on the market today. The more versatile, the better-it means that you can install the software on more than one phone. This makes
it so that if your girlfriend uses a spare, you can still see what shes up to.
Well not anymore! You can use cell phone tracking software to find out EXACTLY what she is saying to everyone she sends a text to, and shell never even know youre watching her. She wont even
know the software is installed on her phone, because it is virtually undetectable. She wont see that its installed. She wont even see that its running. And it will send all of the information
stored in her phone to a remote server, without making any noise or alerting her that its doing it.
Tuesday, July 9, 2013
Build a 25W Bridge Audio Amplifier with TDA2005
This is the 25W bridge audio amplifier built using single power IC TDA2005. Actually, the TDA2005 is a stereo power amplifier chip. It has two input channels and two output channel and delivers about 10W power output for each channel, since it connected in bridge mode then it will delivering up to 25W audio output. Take a note that the speaker terminals should not conected to the ground and mount the IC on the heatsink to prevent overheating.
25W Bridge Audio Amplifier with TDA2005 Circuit Diagram
Parts List:
R1 = 120K?
R2,5,6 = 1K?
R3,4 = 12?
R7,8= 1?
C1,5,7 = 220uF/25V
C2,10,11 = 100nF
C3,4 = 2.2uF/25V
C6,8 = 100uF/25V
C9 = 10uF/25V
IC1 = LM2005M / TDA2005
Saturday, July 6, 2013
Designing a Light Detection
In designing a circuit that can detect light, the most important component is the light sensor. One of the light sensor that we often encounter is LDR (Light Dependent Resistor).
Introducing the Light Sensor
LDR resistance changes with changes in light intensity hit it. In the dark, the LDR resistant is about 10 Mohm and the sunniness of 1 kohm or less. LDR is made from semiconductor materials such as cadmium sulfide. With this material, the light energy that falls cause more load is released or the electric current increased payload. That is, the resistance of the material decreases.
LDR is used to convert light energy into electrical energy. Automatic switches and burglar alarms are a few examples of tools that use the LDR. Because the response to light enough slow, LDR is not used in situations where the light intensity changed drastically.
Characteristics of LDR:
1. At the time not given light, LDR has a very high resistance could reach 10 Mohms
2. But when given a light, the barriers will come down drastically so that the voltage and current can pass through the LDR.
So how do we use the characteristics of the LDR to construct a light detector circuit?
Surely this LDR will be combined with other components. Here is an example circuit with LDR and other components.
Introducing the Light Sensor
LDR resistance changes with changes in light intensity hit it. In the dark, the LDR resistant is about 10 Mohm and the sunniness of 1 kohm or less. LDR is made from semiconductor materials such as cadmium sulfide. With this material, the light energy that falls cause more load is released or the electric current increased payload. That is, the resistance of the material decreases.
LDR is used to convert light energy into electrical energy. Automatic switches and burglar alarms are a few examples of tools that use the LDR. Because the response to light enough slow, LDR is not used in situations where the light intensity changed drastically.
Characteristics of LDR:
1. At the time not given light, LDR has a very high resistance could reach 10 Mohms
2. But when given a light, the barriers will come down drastically so that the voltage and current can pass through the LDR.
So how do we use the characteristics of the LDR to construct a light detector circuit?
Surely this LDR will be combined with other components. Here is an example circuit with LDR and other components.
From the picture above, we can set (varying) the value of R1, R2 and potentiometer P1.
V+ = (RLDR / R1 + RLDR ) 5V
V- = (P1 / R2 + P1) 5V
For example we want to turn on lights automatically when dusk and the lights off automatically when the early morning. Here we can set the reference voltage to be compared with the input voltage of the LDR, we can set these voltages to match the surrounding light intensity.
V+ = (RLDR / R1 + RLDR ) 5V
V- = (P1 / R2 + P1) 5V
For example we want to turn on lights automatically when dusk and the lights off automatically when the early morning. Here we can set the reference voltage to be compared with the input voltage of the LDR, we can set these voltages to match the surrounding light intensity.
Thursday, July 4, 2013
Electronic Fuse Employs A Relay
The hobby circuit below uses an unusual method to generate about 12,000 volts with about 5uA of current. Two SCRs form two pulse generator circuits. The two SCRs discharge a 0.047uF a 400v capacitor through a xenon lamp trigger coil at 120 times a second.
The high voltage pulses produced at the secondary of the trigger coil are rectified using two 6KV damper diodes. The voltage doubler circuit at the secondary of the trigger coil charges up two high voltage disc capacitors up to about 12KV. Although this circuit can’t produce a lot of current be very careful with it. A 12KV spark can jump about 0.75 of an inch so the electronic circuit needs to be carefully wired with lots of space between components.
Source by : Streampowers
Saturday, April 13, 2013
A Car Battery Monitor
A close name on the street can in reality center of consideration your thoughts on the importance of having a battery display in a car. I had been playing a nice week of touring around the united states of americaside at a leisurely tempo and taking in the beautiful surroundings on a daily basis. It wasnt until the ultimate day, with the big rush to return house, that I had to power at evening.My house is deep within the us of a and on the highway I used to be travelling the closest petrol station may be 80km away. I was traveling thru a neighborhood that is stuffed with open-cut coal mines and massive closely loaded semi-trailers continuously pound the highways, travelling at somewhat excessive velocitys. It used to be around 8pm at evening and the complete thing used to be very dark no side highway milds or home milds anyplace.
Just as I was once going up a hill, the solarshines started out to dim and the engine coughed. A massive semi-trailer loomed within the rear-vision mirror as I pushed the seize in and tried to relaxationart. My pace was falling rapidly and my lights were blacked out - I was once like a sitting duck in the direction of the highway, as the semi-trailer came swiftly bearing down on me. I simply managed to tug the auto off the street, as the semi-trailer got here screaming prior, missing me via inches! After calling for the lend a hand of the NRMA, the issue was once discovered to be a fault in the alternator, which used to be failing to charge the battery. The battery voltage had been falling underneath the heavy load of the milds and on the worst imaginable time, there was now not enough power for the lights or the motor.
![](\"http://3.bp.blogspot.com/-LSx8WgBHGI0/Tg3TfqUpfUI/AAAAAAAAC2g/8H1XEy5Thkc/s400/Car%2BBattery%2BMonitor%2BCircuit%2Bdiagram.jpg\")
After the preliminary shock wore off, I put on my thinking cap to come up with a PIC-based method to the problem. What was once in level of fact wanted used to be a show and a buzzer, to get my consideration must the voltage fall out of doors a targeted vary. So my design standards was set, a sequence of LEDs might indicate the voltage and a buzzer would also be used to warn of problems. Main Features:
- Visual indication of battery voltage
- Audible warning when voltage becomes low
- Screw terminals for easy connection
- Simple and straightforward to construct
Circuit details:
The circuit is in line with PIC16F819 18-pin microcontroller which has an analog-to-digital (A/D) input to observe the battery voltage and outputs able to driving LEDs right away, to maintain the part count down. There are seven LEDs in all, giving a just right range of voltage indication. The topmost LED, LED1, comes on for voltages above 14V as a manner to happen when the battery is absolutely charged. LED2 point outs for voltages between 13.5V and 14V while LED3 point outs between thirteenV and 13.5V. Normally, probably the mostse LEDs shall be on. LED4 quilts 12.5V to 13V while LED5 quilts 12V to 12.5V. LED6 duvets from eleven.5V to 12V while LED7 comes on for voltages below 11.5V. These two LEDs are backed up with the help of the piezo chime which beeps for voltages between 11.5V and 12V and change intos more insistent for voltages under eleven.5V.
That might seem fairly conservative. After all, most automobiles will start and no longer using a bothers, even if the battery voltage could be a slightly under 12V, wont they? Well, no. Some brand new automotives will happily crank the motor at voltages beneath 11V however their engine management won't let the motor begin except the voltage is above 11V. So dont assume that a modern automobile will all the time begin reliably. This little battery monitor may easily prevent an extraordinarily inconvenient failure to start! So lets describe the the rest of the circuit. The incoming supply is linked by method of diode D1 which provides safety once extrast reverse polarity whereas zener diode ZD1 gives safety from spike voltages.
A usual 7805 3-terminal regulator is then used to provide a steady 5V to the microcontroller. The battery voltage is sensed by means of a voltage divider the use of 33kΩ and 100kΩ resistors. This delivers the voltage down to inside the 0-5V vary for the A/D input of the PIC16F819. Port B (RB0 to RB7) of the microcontroller is then used to force the quite loads of LEDs, with current limiting equipped by the use of the 330Ω resistor network. RB7, pin thirteen, drives a swaping transistor for the piezo buzzer.
Software:
The circuit is in line with PIC16F819 18-pin microcontroller which has an analog-to-digital (A/D) input to observe the battery voltage and outputs able to driving LEDs right away, to maintain the part count down. There are seven LEDs in all, giving a just right range of voltage indication. The topmost LED, LED1, comes on for voltages above 14V as a manner to happen when the battery is absolutely charged. LED2 point outs for voltages between 13.5V and 14V while LED3 point outs between thirteenV and 13.5V. Normally, probably the mostse LEDs shall be on. LED4 quilts 12.5V to 13V while LED5 quilts 12V to 12.5V. LED6 duvets from eleven.5V to 12V while LED7 comes on for voltages below 11.5V. These two LEDs are backed up with the help of the piezo chime which beeps for voltages between 11.5V and 12V and change intos more insistent for voltages under eleven.5V.
That might seem fairly conservative. After all, most automobiles will start and no longer using a bothers, even if the battery voltage could be a slightly under 12V, wont they? Well, no. Some brand new automotives will happily crank the motor at voltages beneath 11V however their engine management won't let the motor begin except the voltage is above 11V. So dont assume that a modern automobile will all the time begin reliably. This little battery monitor may easily prevent an extraordinarily inconvenient failure to start! So lets describe the the rest of the circuit. The incoming supply is linked by method of diode D1 which provides safety once extrast reverse polarity whereas zener diode ZD1 gives safety from spike voltages.
A usual 7805 3-terminal regulator is then used to provide a steady 5V to the microcontroller. The battery voltage is sensed by means of a voltage divider the use of 33kΩ and 100kΩ resistors. This delivers the voltage down to inside the 0-5V vary for the A/D input of the PIC16F819. Port B (RB0 to RB7) of the microcontroller is then used to force the quite loads of LEDs, with current limiting equipped by the use of the 330Ω resistor network. RB7, pin thirteen, drives a swaping transistor for the piezo buzzer.
Software:
For the software, the design follows the basic template for a PIC microcontroller. Port A and its ADC (analog-to-digital converter) operate are set up while port B functions because the output for the LEDs and buzzer. Once the set-up is full, a reading will likely be taken at port RA2, the enter for the A/D convertor. This reading is then when compared with a sequence of prices to resolve the range of the voltage. This is just like a collection of \"if\" statements in Basic language. If the voltage is found to be inside a certain vary, the related port B pin will almost definitely be fliped on. If the voltage is below 12V, the buzzer will most definitely be turned on for a brief duration, to signal a low battery situation. As the voltage falls beneath 11.5V, the frequency of the beeps will elevate, to signal elevated urgency.
Building it:
All the parts are installed on a small PC board measuring 46 x 46mm (available from Futurlec). The place to begin should be the IC socket for the PIC16F819, as this is best to mount whereas the board is naked. The next item will even be the PC terminal block. The resistors and capacitors can then follow. Make certain the electrolytics are inserted with perfect polarity.
![](\"http://1.bp.blogspot.com/-TzMlq3OlBV8/Tg3UXyJCBxI/AAAAAAAAC2o/6VLxJtB3ugE/s400/Car%2BBattery%2BMonitor%2BCircuit%2Bdiagram%2B2.jpg\")
Make sure that you don't confuse the zener (ZD1) with the diode when you in finding yourself putting in them; the diode is the larger bundle of the two.
All the parts are installed on a small PC board measuring 46 x 46mm (available from Futurlec). The place to begin should be the IC socket for the PIC16F819, as this is best to mount whereas the board is naked. The next item will even be the PC terminal block. The resistors and capacitors can then follow. Make certain the electrolytics are inserted with perfect polarity.
Make sure that you don't confuse the zener (ZD1) with the diode when you in finding yourself putting in them; the diode is the larger bundle of the two.Even extra essential, dont get the 78L05 3-terminal regulator and the 2N3906 transistor mixed up; they arrive in similar packages. The 78L05 will most certainly be labelled as such while the 2N3906 will most probably be labelled \"3906\". And you ought to definitely insert them the precise manner round. The buzzer should even be installed with the right polarity. The 330Ω current limiting resistors are all in a 10-pin in-line package. There are four green LEDs, two yellow and one crimson. They wish to be installed in line and with the precise orientation.
Testing:
Before you insert the PIC16F819 microcontroller, do a voltage examine. Connect a 12V supply and test for the presence of 5V between pins 14 & 5 OF IC1. If 5V just isn't existing, verify the polarity of regulator REG1 and the polarity of the diode D1. If these take a appear ats are OK, insert the IC and check the unit over a variety of voltage between 9V and 15V. Make positive that every one LEDs come on in sequence and the piezo buzzer beeps for voltages under 12V.
Now it is subject of putting in the unit to your automobile. It is best to install the unit in a visual position for the driving force. However, it must now not obscure every other devices. The unit will have to be linked to the autos 12V supply after the ignition switch. This will flip the unit off with the other instruments and prevent battery drain whereas the motor is simply not working.
Author :Alan Bonnard Copyright : Silicon Chip Publications Pty Ltd
Friday, April 12, 2013
Constructing a Universal Power Supply using LM317 Rise
This is a basic, Universal Power Supply voltage regulator circuit the usage of an LM317, 3-terminal regulator in a TO-220package. The Universal Power Supply output voltage can be set to anywhere within the range one.5V to 30V by way of picking resistances. By using a potentiometer, R2, as of the resistors that you could dial up the output voltage wished. Either AC or DC enter can be provided to the PCB by using a socket or terminal block. Connection will additionally be either way round. This is because they've presentd a bridge rectifier on board. The input DC voltage to the regulator have to be at least two.5V above the necessary output voltage. An off/on change is equipped.
For a lot of applications (say 12V at 60mA) a heat sink wont be required. The LM317 will provide relatively larger output voltages than 30 volts. However, for most hobbyists over 30V wont be needed. So to make a small PCB they've used some electrolytic capacitors rated to 35 volts. To be safe for continuous operation the utmost enter DC voltage to the regulator must now not be over 33V. With a two.5V to three.0V drop throughout the regulator this may just increasingly provide a regulated output of 30V. You can draw up to one.5A from the LM317. In case you want greater then use an LM338T rated to 5A.
When out of doors capacitors are used with any IC regulator it is lovely apply so as to add safety diodes to prevent the capacitors discharging again in to the regulator in the event of extraordinary running stipulations, like a surprising short circuit on the input or the output, or a again emf from an inductive load. That is the function of D one and D Two.
The worth of R1 can vary anyplace from 120R to 1200R However, circuits from most different supplys choose using either 220R or 250R. They have used 240R or 250R. The voltage drop across R1is one.25V for all worths, and this is the key to the design. one.25V is the reference voltage of the regulator. Whatever current wafts through R1 also floats via R2, and the sum of the voltage drops across R1 and R2 is the output voltage. (Additional current Id also drifts in R2 however it's regularly 50uA so is negligible.)
The design components are:
VOUT = 1.25 (1 + R2/R1) volts, or alternatively
R2/R1 = (VOUT/1.25) - 1
So in case you beneathstand VOUT & R1 is 250R then that you could calculate R2. In case you find that the 5K potentiometer used forR2 does no longer give you the degree of positive keep watch over over the voltage output vary that you just want then you will have to use these formula to advantageous-tune R1 & R2 to raised applicable values.
![](\"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh5hO8JeNJJztSEuFRB9nH8tRm_kNxa8pDRODWdME4H98RZFTGsu4aD_3Ghgw83-HAYbMIkeOQJutC6d7si3sCIVU4VTn8xXNCBuIlLznJo-srIr4b6gSjye1AcP4PfAc23cay1IjTyH9h7/s320/Universal+Power+Supply.jpg\")
Universal Power Supply Schematic Diagram
![](\"http://www.electronics-project-design.com/images/LM317Parts.GIF\")
Tuesday, April 9, 2013
Triac Light Switch as a dimers
The series of light switches this time slightly different from the voltage of work. The series of light switches can work directly on the AC power network. Light switches are using the main component of TRIAC and LDR. The circuit is very simple and the components were sold in the market.
If you want a light reception sensitivity of this circuit can be arranged then the 3.3 MOhm resistor can be replaced with a variable resistor. For more details can be seen from the following series of images.
If you want a light reception sensitivity of this circuit can be arranged then the 3.3 MOhm resistor can be replaced with a variable resistor. For more details can be seen from the following series of images.
 |
| Circuit Diagram |
With Triac Light Switch series is as dimers, but dimers control performed by the reception of light around the LDR. The lower the intensity cayaha received LDR then bright lights. For installation LDR need to be considered so as not exposed to light from the lamp directly.
Sunday, April 7, 2013
Digital Thermometer with data processing of a microcontroller AT89C4051
Digital Thermometer 0-100.0°C is a digital thermometer that operates in modetemperature measurement in Celsius (° C). Digital Thermometer 0-100.0 ° C in this article uses data processor in the form of a microcontroller AT89C4051.
Temperature sensors used in Digital Thermometer 0-100.0 ° C. This temperature sensor LM35D. Digital Thermometer 0-100.0 ° C. It uses the temperature measurement data viewer in the form of 1 line LCD viewer. Digital Thermometer 0-100.0 ° C. It can display the temperature measurement data with a resolution of 0.1 ° C.
Temperature sensors used in Digital Thermometer 0-100.0 ° C. This temperature sensor LM35D. Digital Thermometer 0-100.0 ° C. It uses the temperature measurement data viewer in the form of 1 line LCD viewer. Digital Thermometer 0-100.0 ° C. It can display the temperature measurement data with a resolution of 0.1 ° C.
 |
| Digital Thermometer Circuit Diagram |
Digital Thermometer 0-100.0 ° C. These temperature sensors make use of LM35D as temperature sensing. In Digital Thermometer 0-100.0 ° C. This temperature sensor measurement data this LM35D (Level Voltage) is then converted into 4-bit binary data using the ADC CA3162.
Then the 4-bit data from ADC CA3162 which is a measurement of data if the temperature is in the AT89C4951 microcontroller so that it becomes an operating principle of temperature measurement based on digital thermometers. In the final stage of the Digital Thermometer 0-100.0 ° C. This is the appearance of digital data temperature measurement, using digital data viewer of the LCD 1 line.
Then the 4-bit data from ADC CA3162 which is a measurement of data if the temperature is in the AT89C4951 microcontroller so that it becomes an operating principle of temperature measurement based on digital thermometers. In the final stage of the Digital Thermometer 0-100.0 ° C. This is the appearance of digital data temperature measurement, using digital data viewer of the LCD 1 line.
Tuesday, April 2, 2013
Offshore Manufacturing Solutions in Mexico with the Entrada Group A Review
The Entrada group is a US based company having a rigorous 20 years of experience in partnering with international manufacturers in Mexico. The organization is specifically involved in providing effective help and solutions, so that manufacturing in Mexico becomes much easier and efficient.
There are many management groups who are rather reluctant in outsourcing their vital Mexico manufacturing units and systems, because they simply do not like to lose control of their production line up and strictly prefer retaining hold over their own unique corporate culture.
Moreover they want the implementations to happen at a quick pace without spending much on their existing management group and also without involving undue risks.
And with their present market covering the North American regions, these management teams are always looking to capture the remaining global market opportunities, quickly and efficiently.
So How Does Entrada Help?
Entradas expertise transforms the above concept into a reality. With Entrada, interested manufacturers begin their production processes in Mexico under a US contract, such that the manufacturer is entertained with an honest integrated service and is allowed to concentrate freely on the key business issues, relieving the company from other stresses.
While the management becomes free to focus directly on production, quality control and the clients, Entrada takes hold of the everyday responsibilities, like country risks and cross border business functionalities which become vital for supporting a smooth sailing of the Mexico manufacturing operations.
Entradas manufacturing in Mexico solution ensures very competitive compensation estimates which help the management teams to hugely cut down on their over all labor costs and irrelevant overhead costs.
However competitive costs does not mean ordinary qualities, rather here at Entrada we are very serious with standards and quality issues.
Entrada provides you with a team of highly committed and dedicated work force who strictly maneuver as per the management’s directions, and.... a complete turnkey system which allows you to see your Mexico offshore manufacturing unit up and running within an astonishing short span of 90 days.
At Entradas Mexico manufacturing solution we assist you with the key administrative functions and take care of all issues concerned with the Mexico government. The control over the production line always remains completely yours.
This results in a very stress free environments and a cool Mexico manufacturing situation for the manufacturers.
Furthermore we help the manufacturing companies by catering clients who discuss their experience with Entrada and the Mexico country.
To learn more about offshore manufacturing in Mexico, Call 1.210.828.8300 U.S.
There are many management groups who are rather reluctant in outsourcing their vital Mexico manufacturing units and systems, because they simply do not like to lose control of their production line up and strictly prefer retaining hold over their own unique corporate culture.
Moreover they want the implementations to happen at a quick pace without spending much on their existing management group and also without involving undue risks.
And with their present market covering the North American regions, these management teams are always looking to capture the remaining global market opportunities, quickly and efficiently.
So How Does Entrada Help?
Entradas expertise transforms the above concept into a reality. With Entrada, interested manufacturers begin their production processes in Mexico under a US contract, such that the manufacturer is entertained with an honest integrated service and is allowed to concentrate freely on the key business issues, relieving the company from other stresses.
While the management becomes free to focus directly on production, quality control and the clients, Entrada takes hold of the everyday responsibilities, like country risks and cross border business functionalities which become vital for supporting a smooth sailing of the Mexico manufacturing operations.
Entradas manufacturing in Mexico solution ensures very competitive compensation estimates which help the management teams to hugely cut down on their over all labor costs and irrelevant overhead costs.
However competitive costs does not mean ordinary qualities, rather here at Entrada we are very serious with standards and quality issues.
Entrada provides you with a team of highly committed and dedicated work force who strictly maneuver as per the management’s directions, and.... a complete turnkey system which allows you to see your Mexico offshore manufacturing unit up and running within an astonishing short span of 90 days.
At Entradas Mexico manufacturing solution we assist you with the key administrative functions and take care of all issues concerned with the Mexico government. The control over the production line always remains completely yours.
This results in a very stress free environments and a cool Mexico manufacturing situation for the manufacturers.
Furthermore we help the manufacturing companies by catering clients who discuss their experience with Entrada and the Mexico country.
To learn more about offshore manufacturing in Mexico, Call 1.210.828.8300 U.S.
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