An AC mains high/low cut-off device will cut off or disconnect the mains supply from home electrical whenever a high voltage or low voltage situation is detected. In this way […]
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Lead Acid Battery Charger Circuits
The lead acid battery charger circuits explained in this article can be used for charging all types of lead acid batteries at a specified rate. This article explains a few […]
5 Simple Water Level Controller Circuits
An automatic water level controller is a device which senses undesired low and high water levels in a tank, and switches a water pump ON or OFF accordingly to maintain […]
Make this Simple Buzzer Circuit with Transistor and Piezo
In this article we learn how to make a very simple circuit for buzzer using piezo electric transducer, two resistors, a small coil and a BC547 transistor. A buzzer is […]
Automatic Vehicle Headlight Dipper/Dimmer Circuit
The circuit described here can be built and used in your vehicle for an automatic dipping and dimming operation of the vehicle headlamps, in response to the intense lights coming from an […]
How to Use LM317 for Making a Variable Power Supply Circuit
In this post we will elaborately discuss how to build a simple LM317 based adjustable power supply circuit using minimum number of external components. As the name suggests a variable […]