A very simple DC over voltage protector circuit is shown below. The transistor is set to monitor the input voltage applied to it from the left, in case the voltage rises above […]
Regulated, High Current Power Supply Circuit
The circuit given here below can be used for applications that require stringent voltage regulations and ripple rejection criteria. The transistor pair are configured such that all residual ripple factor are perfectly rectified. […]
3 Tested 220V High and Low Voltage Cut OFF Circuits Using IC 324 and Transistors
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 […]
4 Simple Transformerless Power Supply Circuits Explained
In this post we discuss 4 easy to build, compact simple transformerless power supply circuits. All the circuits presented here are built using capacitive reactance theory for stepping down the […]
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 […]
How to Calculate Transformerless Power Supplies
This post explains how to calculate resistor and capacitor values in transformerless power supply circuits using simple formulas like ohms law. Analyzing a Capactive Power Supply Before we learn the […]