This sine wave to square wave converter circuit is expected to provide good square waves changing a sine wave delivered…
Here is the circuit diagram of simple multitone alarm. This is a low cost circuit which is simple and easy…
This is the circuit diagram of portable mic preamp. This circuit consumes low current supply (about 2mA), so will have…
This a simple stereo electret microphone pre amplifier circuit. The below design diagram is the design for single channel, but…
This is the simple project of small sound amplifier for ears or often called hearing aid device or hearing loss…
Here is the USB printer switch circuit design with two USB input ports and one USB output port. This a…
This is the design diagram of 5 band graphic equaliser circuit build using operational amplifier chips, the NE5532 or LM833.…
This is a low cost, simple, yet a surprisingly powerful electronic siren powered by just a 9V battery. The circuit…
Above circuit diagram is a easy, simple and cheap switching voltage regulator which has capability to deliver adjustable voltage output…
After we present a circuit of electronic mosquito repellent, this time will be continued with a circuit of electronics that…