Tag: 12v variable power supply circuit diagram

13.8v Power Supply Circuit Diagram for Mobile Rigs

Posted on August 3, 2023 | By Tronicspro | No comments

The 13.8v power supply Circuit Diagrams shown below are based on a type 723 voltage regulator because it is reliable, widely available and cheaper than many of the latest high-power (>1.5 A) three-terminal voltage regulators.

12v Transformerless Power Supply Circuit Diagram

Posted on August 2, 2023 | By Tronicspro | 1 comment

Transformerless Power Supply Circuit 220-12v

The circuit described offers an alternative to using a series resistor for voltage dropping, utilizing a series capacitor and bridge rectifier. While there are limitations in terms of only utilizing one half-cycle of the mains waveform, the clever use of a zener diode allows for more efficient rectification.

Transformerless Symmetrical Power Supply Circuit Diagram

Posted on August 1, 2023 | By Tronicspro | No comments

Transformerless Dual Power Supply Circuit Diagram

Transformerless Symmetrical Power Supply circuit which gives both polarity (positive and negative) zener regulated output voltages

Simple Variable 12V Power Supply Circuit Diagram

Posted on July 27, 2023 | By Tronicspro | No comments

In this article, we will discuss a 12V variable power supply circuit diagram using 2N3055, BC547, and BC557 transistors. These transistors, along with a 15V zener diode, play a crucial role in regulating the output voltage and current of the power supply.