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Adjustable

1.25V to 120V Mains Adjustable Voltage Regulator Circuit Diagram

Last Updated on January 17, 2025 by Swagatam 35 Comments

1.25Vto120Vadjustablevariablepowersupllycircuit

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 handle in excess of 700 mA current. High Voltage Specification It is specifically configured internally for working with high-voltage applications where ordinary bipolar voltage regulators […]

Filed Under: Power Supply Circuits Tagged With: 120V, 25V, Adjustable, Mains, Regulator, Voltage

Simple Adjustable Industrial Timer Circuit

Last Updated on January 2, 2024 by Swagatam 31 Comments

pelletburnertimercontrollercircuit

In this post I have explained a simple and effective industrial timer circuit which can be universally used for most industrial and home timer based applications. The idea was requested by Mr. Vasilis K. Technical Specifications I have a question regarding the 4060 ic wired as “one shot timer.” If it can power on the […]

Filed Under: Timer and Delay Relay Tagged With: Adjustable, Industrial, Simple, Timer

0-300V Adjustable Transformerless Power Supply Circuit Diagram

Last Updated on January 17, 2025 by Swagatam 269 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

Making an Adjustable Electromagnet Circuit

Last Updated on May 28, 2026 by Swagatam 22 Comments

adjustable2Belectromagnet2Bcircuit

This article describes a simple circuit which can be used for pulsing an electromagnet. The IC 555 once again becomes the central part of the circuit. I have explained the making procedure of this simple adjustable electromagnet circuit for varying the magnetic power of an electromagnet. Introduction The circuit was requested by Mr.Jason, one of […]

Filed Under: Home Electrical Circuits Tagged With: Adjustable, Electromagnet, Making

Adjustable Timer Circuit Using IC 555

Last Updated on June 25, 2022 by Swagatam 164 Comments

SimpleTimer

IC 555 adjustable timer explained here can be adjusted from any time delay 1 second to 3 hours for operating any load through a relay control The produced time delay is fully adjustable and the user has the freedom to set the time period as desired. There are many ways of making simple timer circuits […]

Filed Under: Timer and Delay Relay Tagged With: 555, Adjustable, Timer

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