Control Line Follower ROBOT Controlled by 2051

This Robot use two motors control  rear wheels and the single front wheel is free. It has 4-infrared sensors on the bottom for detect black tracking tape, when the sensors detected black color, output of  comparator, LM324 is low logic and the other the output is high.Microcontrollor AT89C2051 and H-Bridge driver L293D were used ...

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Control AC to DC 90 Watt Switching Power Adaptor

AC to DC switching power adaptor circuit with maximum output power of 90W. Switching power supply is built using a high voltage power switching regulator IC MC33374 and some other additional components. The MC33374 IC is a monolithic high voltage power switching regulators that are specially designed to operate directly from a rectified AC...

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Control Basic Phototransistor Detector

This is a Phototransistor Detector circuit. In this circuit, when the light falling on the phototransistor (Q1) is blocked, its conductance will decrease and the voltage across Q1 will rise. When the voltage rises above 1/2 of the supply voltage the output of the comparator will turn ON and the LED will be lit.The only critical part of this...

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Control Mobile Phone Charger Circuit For Traveling

Here is an ideal Mobile charger using 1.5 volt pen cells to charge mobile phone while traveling. It can replenish cell phone battery three or four times in places where AC power is not available. Most of the Mobile phone batteries are rated at 3.6 V/500 mA. A single pen torch cell can provide 1.5 volts and 1.5 Amps current. So if four...

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Control Printing Compact for Windows Mobile

Today, in turn for the net, I have found a notice interesting. Polaroid, in collaboration with Zink Imaging has intention to release to short (the precise date still has not been specified) a new printing for photo super capacities them. The new “Digital Mobile Instant Photo Printer” will be equipped of Bluetooth logo's, in order to allow...

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Control Windows seven WP7 Tips and Tricks - To associate a Bluetooth device

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Control Digital Remote Thermometer Circuit With Receiver and Transmitter

Remote sensor sends data via mains supply, Temperature range: 00.0 to 99.9 °CThis circuit is intended for precision centigrade temperature measurement, with a transmitter section converting to frequency the sensor's output voltage, which is proportional to the measured temperature. The output frequency bursts are conveyed into the mains...

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Control Mobile Phone Charger Circuit For Traveling

Here is an ideal Mobile charger using 1.5 volt pen cells to charge mobile phone while traveling. It can replenish cell phone battery three or four times in places where AC power is not available. Most of the Mobile phone batteries are rated at 3.6 V/500 mA. A single pen torch cell can provide 1.5 volts and 1.5 Amps current. So if four...

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Control Motorola CommandOne, an earpiece bluetooth in order to write the SMS

To write SMS while guide is it self most dangerous. In some Countries he is also illegal and in passed they have been also of the serious incidents much for distractions of this type. The keyboards touchscreen, much fashionable ones in the smartphone more recent, than certainly of it do not facilitate the writing. Therefore Motorola it has...

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Control Simple Car Theft Deterrent

The purpose of this simple circuit is to deter potential car burglars by flashing a few LEDs on a seemingly very sophisticated control panel,implying that the vehicle is equipped with a sophisticated hi-tech alarm system. This simple deterrent is unique in the sense that it is based on just one single uni junction (UJT) and is connected to...

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Control Headlights On Indicator

Most drivers would have experienced the frustrations at some time or another of parking their car for the day and coming back in the evening only to find that they have accidentally left the head lights on. The result,with the modem small car batteries, quite often is that they have discharged the battery too much to start the engine. And...

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Control The Pocket Receiver

Not that there is any paucity of pocket receivers or that they are too expensive,or that there are hardly any well known circuit that we decided to design' another one'. It's not just another one.The True Pocket Receiver No doubt, dozens of models are commercially available but they aren't truly pocket sized (rather pocket oversized...

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