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Transformerless

3 Best Transformerless Inverter Circuits

Last Updated on January 19, 2025 by Swagatam 270 Comments

3000 watts

As the name suggests, an inverter circuit that converts a DC input into AC without depending on an inductor or a transformer is called a transformerless inverter. Since an inductor based transformer is not employed, the input DC is normally equal to the peak value of the AC generated at the output of the inverter. […]

Filed Under: Inverter Circuits Tagged With: Best, Circuits, Inverter, Transformerless

Transformerless AC Voltmeter Circuit Using Arduino

Last Updated on December 5, 2024 by Swagatam 13 Comments

100k2watt

In this article I have explained how to make a transformerless AC voltmeter using Arduino. Making an analog voltmeter is not an easy task as to build one you must have good knowledge of physical quantities like torque, speed; which can be very difficult when it comes to their practical applications. By Ankit Negi But […]

Filed Under: Arduino Projects, Meters and Testers Tagged With: AC, Arduino, Transformerless, Voltmeter

Transformerless Voltage Stabilizer Circuit

Last Updated on January 2, 2024 by Swagatam 54 Comments

pwm 2

In this post I have explained a simple circuit design which ensures a perfectly stabilized 220 V or 120 V mains voltage across the connected load, without using relays or transformers, rather by the use of accurately dimensioned and self adjusting PWM pulses. The idea was requested by Mr. Mathew. Warning: Circuits I have explained […]

Filed Under: Voltage Control and Protection Tagged With: Stabilizer, Transformerless, Voltage

Transformerless Constant Current LED Driver Circuit

Last Updated on June 18, 2022 by Swagatam 44 Comments

led2Bdriver

In this post I have explained how just a single IC MBI6001 can be used as a transformerless constant current LED driver circuit for illuminating a chain of many LED in series. The MBI6001 series of ICs are designed to work with mains AC inputs and convert it into a lower voltage DC output which […]

Filed Under: Lamps and Lights Tagged With: Constant, Current, Driver, LED, Transformerless

Transformerless Relay Driver Stage

Last Updated on January 2, 2024 by Swagatam 8 Comments

MainPowerSupplyCircuitBRINKSModelNo 7011W28SecurityLightingSystemMotionActivated200wattHalogenBulb29

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 through an external pulse. he idea was suggested by Mr. Reza. Technical Specifications Reza: Dear Sir, I have a problem with one Circuit regarding converting […]

Filed Under: Power Supply Circuits Tagged With: Driver, Relay, Stage, Transformerless

0-300V Adjustable Transformerless Power Supply Circuit Diagram

Last Updated on January 17, 2025 by Swagatam 261 Comments

ZEROTO220300VVARIABLEPOWERSUPPLYCIRCUIT

This simple MOSFET controlled transformerless power supply circuit can be used for delivering a continuously variable 0 to 300V DC output and a current control from 100 mA to 1 Amp. To protect against my high voltage research projects from going up in smoke permanently, I developed an easy circuit which is able to render […]

Filed Under: Power Supply Circuits Tagged With: 300V, Adjustable, Power, Supply, Transformerless

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