Simple Stereo Amplifier Circuit using IC TDA2004

A very simple 10 +10 or in total 20 watt stereo amplifier circuyit has been discussed in this article using a single low cost IC TDA 2004 or a TDA 2005, using minimum number of components. The main features which includes in this IC are: Low distortion. Almost zero noise. The IC also features substantial […]

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Speaker Box Amplifier Circuit with Woofer, Tweeter

If you are planning to make an speaker amplifier box circuit or ampli-speaker unit with integrated woofer and tweeter, this circuit will help you to reach your goal with great success and also very cheaply. It is an amplifier which, with a voltage of 14.4 Volts, distributes a total power of 20 Watts in two […]

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Darkness Safety Light Circuit for Bikers and Pedestrians

In this article we study a neat little LED flasher circuit which could help the bikers and pedestrians, runners, to create a blinking safety light on their body outfit, such as on shirt, belt, shoulders, and use it to indicate the nearby vehicles about their presence in complete darkness, and avoid mishaps or accidents. The […]

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Capacitive Proximity Sensor Alarm Circuit

The discussed capacitive proximity sensor alarm circuit is composed of a transistor TR1 NPN BC107 (or similar) fitted in oscillator and operating a Darlington TR2 NPN BC517 accustomed to push a 12V relay. The concept is very easy: TR1 can be an HF oscillator whose frequency relies on the JAF1 choke and also the parasitic […]

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