Various circuits design electronic projects

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Various electronic circuit design projects with description , based on integrated circuits and common elec tronic components .

Stereo balance indicator circuit design electronic project

This stereo balance indicator circuit diagram is designed using few common external components .The schematic circuit is very simple to build and will provide an visual indication with LEDs for left , right and center balance . Outputs from each channel are fed to the two inputs of IC1 connected as a differential amplifier .

Circuit Diagram: 
Stereo balance indicator circuit design electronic project

USB to Serial RS232 adapter circuit

This USB to Serial RS232 adapter is very useful in many situations we need to connect a device with RS232 to a computer without RS232 port , but with USB port .
Using FT232BM chip manufactured by Future Technology Devices International we can make a very simple USB to Serial RS232 adapter using few external components .

Circuit Diagram: 
FT232 USB to Serial RS232 adapter circuit design electronic project

TFDS4500 infrared adapter serial transceiver

This electronic infrared adapter serial transceiver circuit is based on a TFDS4500 IC and can be used to transmit data from portable devices to a PC using IR and serial port .

Circuit Diagram: 
TFDS4500 infrared adapter serial transceiver electronic project