The post presents an SMPS based LED street lamp driver circuit which can be used for driving any LED lamp design right from 10 watts to 50 watts plus. Using […]
Power Supply Circuits
220V SMPS Cell Phone Charger Circuit
In this post I have explained how to make a simple, cheap yet extremely reliable smps based 220V/120V mains operated cell phone charger circuit. Why TNYxxx Tiny Switch is Used […]
1.25V to 120V Mains Adjustable Voltage Regulator Circuit
The TL783 is a variable three lead mains voltage regulator chip having an output range of 1.25 V to 125 V and a DMOS output transistor which is able to […]
Operating Single Rice Bulb Lamp with 220V AC
In this post I have explained a simple 220V mains operated transformerless single rice bulb power supply circuit, which may be used for illuminating electronic rice lamp diyas replacing traditional oil […]
12V, 24V, 1 Amp MOSFET SMPS Circuit
The post investigates a cheap Chinese made 12V, 1 amp MOSFET based smps circuit which can be modified into 24V 1 amp, or 12V 2 amp smps circuits also. The […]
Transformerless Relay Driver Stage
In this post I have explained an enhanced transformerles power supply circuit design which consists a well stabilized and regulated DC stage along with a relay driver stage which operates […]
