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Archives for 2020

Adjustable Switching Power Supply Circuit – 50 V, 2.5 Amps

Last Updated on July 5, 2025 by Swagatam 15 Comments

l4960

The explained variable switching power supply circuit is designed around the integrated switch mode power supply controller device Type L4960 from SGS. The main features of this switching regulator can be summarized from the following data: Main Features Input voltage range: 9-50 VDC Output voltage variable from 5 to 40 V. Maximum accessible output current […]

Filed Under: SMPS and Converters Tagged With: Adjustable, Amps, Power, Supply, Switching

110 V to 310 V Converter Circuit

Last Updated on July 5, 2025 by Swagatam 11 Comments

110 V to 220 V converter device

The discussed circuit is a solid state AC to DC voltage converter that will convert any AC input between 85 V and 250 V into a constant 310 V DC output. This kind of circuits are normally use in LCD TV sets for operating the system through inputs from 100 V AC to 250 AC. […]

Filed Under: SMPS and Converters Tagged With: 110, 310, Converter

12 V to 30 V High Current Boost Converter Circuit [Variable]

Last Updated on July 5, 2025 by Swagatam 9 Comments

DC to DC converter

In this post I have explained how to make a high current boost converter circuit which will step up a 12 V DC to any higher level up to 30 V maximum, and at an impressive 3 amp current rate. This high current output can be further enhanced by suitably upgrading the inductor wire gauge […]

Filed Under: SMPS and Converters Tagged With: Boost, Converter, Current, High, Variable

Simple Online UPS Circuit

Last Updated on April 22, 2025 by Swagatam 39 Comments

online UPS compressed

In this post I have explained about the making of a simple online uninterruptible power supply (UPS) which guarantees a seamless transfer of AC mains supply to inverter mains supply for the load, due to the absence of cumbersome transfer switches or relays. What is an Online UPS As the name suggests, an online UPS […]

Filed Under: Inverter Circuits Tagged With: Online, Simple, UPS

10 Simple Unijunction Transistor (UJT) Circuit Diagrams Explained

Last Updated on January 17, 2025 by Swagatam 21 Comments

UJT Pulse Generator

In the earlier post I have explained comprehensively about how a unijunction transistor works, in this post I will elucidate a few interesting application circuits using this amazing device called UJT. The example application circuits using UJT which are explained in the article are: 1) Square Wave Pulse Generator The first design below demonstrates a […]

Filed Under: Oscillator Circuits Tagged With: Diagrams, Explained, Simple, Transistor, UJT, Unijunction

1 Hz to 1 MHz Frequency Reference Generator Circuit Diagram

Last Updated on January 17, 2025 by Swagatam 42 Comments

1 MHz time base

This circuit is an universal frequency generator which you can use in numerous frequency and time period testing applications. It is primarily well suited for a gate pulse generator in frequency counters. The circuit is capable of generating an entire range of reference frequencies such as 1 Hz, 5 Hz, 10 Hz, 50 Hz, 100 […]

Filed Under: Oscillator Circuits Tagged With: Frequency, Generator, Reference

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