Active DC Voltage Doubler

Here is the circuit diagram of active DC voltage doubler which used to increase the DC voltage. This circuit drives…

55 years ago

Basic Theory of DC to AC Inverters

This document explains about Basic Theory of DC to AC Inverters. Title: "The ABC's of DC to AC Inverters", arranged…

55 years ago

100W Audio Amplifier with Transistor BDW83D/BDW84D

Here is the circuit diagram of 100W audio amplifier which using power transistor BDW83D and BDW84D for the final amplification.…

55 years ago

300-2500Hz Audio Bandpass Filter

This is an audio bandpass filter circuit which will filtering the audio frequency from 300Hz to 2500Hz.. The lower and…

55 years ago

Door Knob Touch Alarm

This is door knob touch alarm for your home security purpose. The alarm will be activated when someone touch the…

55 years ago

Mini FM Transmitter

This is a mini fm transmitter circuit. I think this is the simplest one. Simple, easy and of course... inexpensive...…

55 years ago

Electronic Buzzer with IC timer NE555

This easy electronic buzzer circuit built based on timer works for gaining the frequency. The IC timer NE 555 used…

55 years ago

Emergency Light + Alarm

This is the circuit diagram of emergency light included the alarm circuit to show you that there is no power…

55 years ago

Low Noise Portable Mic Preamp

This is the circuit diagram of portable mic preamp. This circuit consumes low current supply (about 2mA), so will have…

55 years ago