Spy Bug circuits are something that’s used when we need to listen to conversation without being noticed or to simply put to spy on a person. Generally Spy bug circuits are constructed using a Mic, amplifier and speaker. The medium…
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FT232 is a USB to TTL Serial converter IC used in applications where USART devices need to communicate to external devices through USB. This IC is compatible with USB 2.0 speed and standards. In fact this Chip was used in…
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IC ULN2803 Pin Diagram ULN2803 is a High voltage, high current Transistor Array IC used especially with Microcontrollers where we need to drive high power loads. Thic IC consists of a eight NPN Darlington connected transistors with common Clamp diodes…
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MAX232 IC Pin diagram MAX232 is a widely known IC used for establishing serial communication between Microcontrollers and Personal Computers (PC). This IC is used to convert TTL/CMOS logic levels to RS232 Logic levels during the process of serial communication….
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Converter circuits are widely used in all places and there are several types in it .Here is a simple Frequency to Voltage converter circuit uses a IC LM331 which is basically a precision voltage to frequency convertor. This IC…
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Burglar alarm circuit or Theft alarm circuits are quite common and different circuits uses different methods to detect intruders. The above circuit uses timer IC 555 to detect and sound alarm upon detecting intruders. The circuit is very easy to…
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