Tagged: Power supply circuits


Zener diode voltage regulator circuits

Zener Diode The zener diode is a type of diode which operates under reverse bias that breakdowns when the applied voltage reaches a particular reverse bias voltage or knee voltage. It allows the current...


Automatic emergency light LED circuit

The automatic power failure emergency light charges the battery when the power is ON and automatically lights ON the LED when the power goes out. The circuit consists of a battery charging section, with...


Arduino Relay module interfacing

Relay modules are assembled units commonly included with Optocouplers, diodes, LED’s, transistors, etc.. So, for the Arduino interfacing we just have to connect a supply voltage, GND and input signal connection. An input section...