USB Battery Charger for Lithium Ion Battery

This schematic diagram is used for charging lithium ion battery. The power source......

Simple Battery Charger using LM350

The schematic diagram can be used for charging the 12V lead acid batteries.The circuit......

100 Watt Inverter 12V DC to 220V AC

Electronic schematic diagram for 100 Watt Inverter 12V DC to 220V AC.The IC1 Cd4047......

Bidirectional Power Inverter

Figure 1If you want to swap charge in either direction between unevenly loaded positive......

Inverter 12 V DC to 120 V AC

This Inverter takes 12 volt d.c and steps it up to 120 volt a.c. The wattage depends......

Inverter 12V DC to 120-230V DC with IC 555

This DC-to-AC inverter schematic produces an AC output at line frequency and voltage.......

Multi tone alarm schematic diagram

This is a simple and easy to build multi tone alarm circuit that can be used in......

0 to 3V Adjustable Output Power Supply

This is an LM317 based adjustable voltage regulator with a maximum output of 3V......

General Purpose Power Supply

General purpose power supply schematics:You can select the output voltage range......

Capacitor Explanation

A capacitor is a passive electrical component that can store energy in the electric......

Resistor Explanation

A resistor is a two-terminal electronic component designed to oppose an electric......

Basic Analog Flip Flop Schematics

This schematics is a basic analog flip flop. As we know, there are analog flip flop......

Dancing Lights

This circuit is very simple... you can use this circuit for decoration purposes......

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......

Audio Line Driver

Audio line driver schematics:This preamplifier has a low output impedance, and is......

Tone Control Circuit

Based on the classic Baxendall tone control circuit, this provides a maximum cut......

ECM Mic Preamplifier

Here a microphone amplifier schematics that may be used with either Electret Condenser......

2 Watt Audio Amplifier

A 2 Watt audio amplifier made from discrete components.The amplifier operates in......

12Volt to 9Volt DC Converter

Parts List:R1 = 560 ohmC1 = 1000uF/40V, ElectrolyticC2 = 10uF/25V, ElectrolyticC3......

Battery 9V Voltage Doubler

MAX1044 is a charge pump converter - it uses a capacitor as a "bucket" to pump......

Unregulated Power Supply

This page come from ww.zen22142.zen.co.uk, show you about circuit of un regulated......