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Newly Updated Circuit Projects:

SMPS Halogen Lamp Transformer Circuit

Last Updated on January 8, 2024 by Swagatam 24 Comments

halogen lamp circuit

One of the best substitutes for traditional light transformer for halogen bulbs is the electronic halogen transformer. It can also be used with non-halogen bulbs and any other form of resistive loads that does not run on RF current. Written and Submitted By: Dhrubajyoti Biswas Halogen Lamp Working Principle The electronic halogen lamp transformer works […]

Filed Under: Power Supply Circuits Tagged With: Halogen, Lamp, SMPS, Transformer

SMPS Welding Inverter Circuit

Last Updated on July 5, 2025 by Swagatam 144 Comments

welding2Bpower2Bsupply

If you are looking for an option to replace conventional welding transformer, the welding inverter is the best choice. Welding inverter is handy and runs on DC current. The current control is maintained through potentiometer. By: Dhrubajyoti Biswas Using Two Switch Topology When developing a welding inverter, I applied forward inverter with two switches topology. […]

Filed Under: SMPS and Converters Tagged With: Inverter, SMPS, Welding

Variable LED Intensity Controller Circuit

Last Updated on June 1, 2026 by Swagatam 16 Comments

led intensity controller circuit

The post presents a couple of simple LED intensity controller circuit which may be appropriately configured for specific related applications. The idea was requested by Mr. Chand. Technical Specifications I would like to have a circuit designed by you which is very simple and straightforward. This will be incorporated as a stand alone feature in […]

Filed Under: Lamps and Lights Tagged With: Controller, Intensity, LED, Variable

Alarm Signal Generator IC ZSD100 Datasheet, Application

Last Updated on May 18, 2026 by Swagatam 10 Comments

speaker alarm circuit

The ZSD100 is an alarm frequency generator IC which incorporates a frequency swept alarm signal generator designed solely for fixed and vehicle protection alarm systems. Circuit Operation For acquiring the specified alarm sound from this IC, just a single ZSD100, two timing capacitors, an in-expensive TO92 darlington, piezo transducer and coupling transformer is everything that […]

Filed Under: Datasheets and Components Tagged With: Alarm, Application, Datasheet, Generator, Signal, ZSD100

Simple Greenhouse Temperature Regulator Circuit

Last Updated on January 2, 2024 by Swagatam 11 Comments

solar ater heater regulator for drip irrigation

In this post I have explained a simple electronic temperature regulator circuit which could be specifically used for regulating greenhouse temperatures. The idea was requested by Mr. Leo. Technical Specifications I am looking for a guide to build a basic temp regulator circuit. I have a solar charger bought from lidl,(SLS 2200 A1) which has […]

Filed Under: Temperature Controllers Tagged With: Greenhouse, Regulator, Simple, Temperature

Dual A/C Relay Changeover Circuit

Last Updated on March 8, 2019 by Swagatam 4 Comments

In this post I have explained a simple relay changeover circuit which may be used for switching a couple of A/Cs or any similar load alternately in order to avoid misuse and save power. Technical Specifications Here is the situation: State: California. Facility: Church. The electric rate is greatly influenced by peak usage in any […]

Filed Under: Inverter Circuits Tagged With: Changeover, Dual, Relay

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