This IC 555 software calculates the values of the resistors and capacitors for a NE555 timer chip, which is designed as a astable multivibrator (oscillator), or square wave generator. You […]
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How to Repair a Switch-Mode-Power-Supply (SMPS)
In this post we try to diagnose a burnt SMPS circuit and try to troubleshoot and repair the circuit. The shown unit is a cheap readymade Chinese make SMPS circuit. […]
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Low Dropout (LDO) Voltage Regulator IC KA378R12C – Pinout and Working Specs
The article explains the pinout functions, and datasheet of a versatile low dropout (LDO) voltage regulator IC KA378R12, and also presents a circuit diagram showing how to use the IC […]
How to Connect an IR Photodiode Sensor in a Circuit
In this post we learn how to correctly connect an IR photodiode in circuits such as a proximity sensor circuit. The explanation is presented in the form a discussion between […]
Make a Walkie Talkie Circuit using FM Radio
In this post we learn how to make a simple homemade walkie talkie circuit using ordinary FM transmitters and FM radios. It’s a perfectly tested design by me. I could […]