Flashy christmas light

This simple and inexpensive circuit built around a popular CMOS hex inverter IC......

LED light flasher

This is a very basic circuit for flashing one or more LEDS and also to alternately......

Just a minute scoring board circuit

You can use this circuit for quiz contests wherein any participant who presses his......

Gate Alarm Circuit

Image Description:Figure 1 represents a cheap and simple Gate Alarm, that is intended......

Graphic Equalizer 3 Band

Very simple and cheap 3 band Equlizer for your home made sound system......

Vinyl Pre-Amplifier

This is old pre amplifier circuit, but still...this is very good and cheap analog......

MP3 Car Amplifier 150 Watts

This car amplifier schematics is quite simple and cheap for car audio system.For......

Amplifier 24 Watts Class A

This is very good and low cost Amplifier for your medium indoor sound system. A......

Simple Line Mixer and Patchbay

Here the finished circuit include the box:And here the schematic diagr......

100 to 150 Watt Amp

Amplifier Schematics:Power Supply Schemati......

Peak Reading Audio Level Meter

This simple circuit will indicate peak audio response on an analogue meter, similar......

Hi-Fi Pre Amplifier

It has an exceptionally fast high frequency response, as demonstrated by applying......

Doorphone Intercom

In this doorphone circuit, an 8 ohm speaker is used both as a microphone and also......

Microphone for Computer

This circuit was submitted by Lazar Pancic from Yugoslavia. The sound card for a......

6 Input Mixer Schematics

The mixer circuit below has 3 line inputs and 3 mic inputs. The mic inputs are suitable......

Audio Notch Meter

Nice notch meter for your audio device. At first glance this circuit looks fairly......

8 Watt Amplifier

Actually, the TDA2030 can deliver 20 watts of output power, but the output power......