Single Supply Function Generator

12V Battery Charger

This circuit is a high-performance charger for gelled-electrolyte lead-acid batteries. This charger quickly recharges the battery and shuts ... Baca selengkapnya »

Simple UPS Power Supply

This circuit is a simple form of the commercial UPS, the circuit provides a constant regulated 5 Volt output and an unregulated 12 Volt supp... Baca selengkapnya »

Fixed Voltage Power Supply

The fixed voltage power supply is useful in applications where an adjustable output is not required. This supply is simple, but very flexab... Baca selengkapnya »

Solar Charger for Lead-Acid Batteries

This circuit is still under development, but works well as shown. This circuit is intended for charging lead-acid batteries with a solar pa... Baca selengkapnya »

Multi-Color LED

How many different conditions do you reckon may be signalled with just one LED? Two, maybe three? Using this simple circuit, a lot more! Adm... Baca selengkapnya »

Simple 40 Watt Inverter

This is the schematic of a simple 40W , 12 volts to 220 Volts inverter.You don’t believe, this is simple and cheap and working for me for la... Baca selengkapnya »

Piezo-Powered Lamp Circuit Schematics

Energy is becoming ever more expensive, and some fresh ideas are needed. There are already human-powered devices on the market, most of whic... Baca selengkapnya »

Simple Low Cost 100W Inverter

Here is the circuit diagram of a simple 100 watt inverter using IC CD4047 and MOSFET IRF540. The circuit is simple low cost and can be even ... Baca selengkapnya »

220 Volts Flashing Lamps

Especially designed for Christmas tree lamps Replaces old thermally-activated switches This circuit is intended as a reliable replacement ... Baca selengkapnya »

VU Meter 5 with UAA180

This circuit of measurement of level uses the UAA180 of SIEMENS and a circuit of rectification of precision, round the IC2B. The calibration... Baca selengkapnya »

IR Beam Breaker Schematics

This is an Infrared beam breaking alarm ideal to use in entry or passages.It is based on the working of the popular IR sensor Module TSOP 17... Baca selengkapnya »

Simple Low Power Car Stereo Amplifier

A simple low power car stereo amplifier circuit based on TDA 2003 is shown here. The circuit uses cheap, readily available components and it... Baca selengkapnya »

Small Power Amplifier 8W / 8Ω with TDA 2030

Although the TDA2030 can deliver 20 watts of output power, I deliberately reduced the output power to about 8 watts to supply 10 watt speake... Baca selengkapnya »