Category Archives: Power Supply Diagrams

Most power supply schematic and diagram circuit, all variable power voltage and current for all type of work

Dual Supply From Single Battery Source

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Dual-voltage power supply is required especially for powering the op-amps and some of the instrumentation amplifiers. A few low-power audio pre-amplifiers also use dual-voltage supply. This circuit provides both +9V as well as -9V supply from a single 9V battery. It consists of timer IC NE555 (IC1), negative-voltage regulator IC… Read more »

Stabilized Regulated Power Supply Circuit

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Small and portable circuit, Very useful for Home-Laboratory This circuit of power supply, is very simple and easy to built, it can be assembled on a general-purpose PCB, finding its materials is very easy and cost-small. The output voltage is stabilized and is regulated in the region from 0V until… Read more »

5V Regulated Power Supply Circuit Diagram

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Simple 5V power supply for digital circuits This circuit is a small +5V power supply, which is useful when experimenting with digital electronics. Small inexpensive wall tranformers with variable output voltage are available from any electronics shop and supermarket. Those transformers are easily available, but usually their voltage regulation is… Read more »