This article transforms a basic capacitive power supply into a safer and more versatile design. The resulting transformerless circuit will offer: This improved design will be suitable for powering a […]
Transformerless Power Supply for LED String Lights
The following transformerless power supply uses an MJE13005 transistor for voltage regulation. It acts like an amplifier controlled by a base zener diode to set the output voltage. A 3uF […]
Simple Transformerless Power Supply Circuit
This post explains how to build an easy transformerless power supply circuits. These circuits are compact and simple and they all use capacitors to step down the AC voltage from […]
Calculating Transformerless Power Supply Circuit Resistors and cap
This post dives into calculating component values for transformerless power supplies, using basic formulas like Ohm’s Law. Understanding the Circuit: Before we jump into calculations, let’s break down a typical […]
High Current MOSFET Transformerless Power Supply Circuit
This highly versatile, reliable transformerless power supply features a stable, adjustable DC output with a relatively high current of around 110 mA. The pulsating direct voltage provided by rectifier D1—D4 […]
220V to 12V SMPS Transformerless Power Supply Circuit
This post is a research layout report for the 1.44 W non-isolated buck converter by using LinkSwitch™-TN2 LNK3204D/P/G, which can be effectively implemented as a 220V to 12V 100mA SMPS […]