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How to Make a 220V to 110V Converter Circuit

Last Updated on January 2, 2024 by Swagatam 63 Comments

220v AC to 110v DC converter circuit diagram

In this post we will unravel a few homemade crude 220V to 110V converter circuits options which will enable to user the user use it for operating small gadgets with a different voltage specs. UPDATE: An SMPS circuit is the recommended option for building this converter, so for an SMPS 220V to 110V converter design […]

Filed Under: Voltage Control and Protection Tagged With: 110V, 220V, Converter

How to Make a Telephone Amplifier Circuit

Last Updated on May 5, 2022 by Swagatam 8 Comments

telephoneamplifiercircuitusingICCA3020

The simple telephone ring tone amplifier circuit I have explained in this article saves the inconvenience of picking the telephone handset while speaking over a call. This circuit also particularly becomes useful when there’s a need of the conversation to become audible to a number of people or a group of people. Introduction When the […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Telephone

How to Use an Op amp as a Comparator Circuit

Last Updated on March 28, 2022 by Swagatam 56 Comments

op amp working

In this post I will comprehensively explain how to use any opamp as a comparator in a circuit for comparing a input differentials and producing the corresponding outputs. What is an Op amp Comparator We’ve been using an op amp IC probably since we started learning electronics, I am referring to this wonderful little IC […]

Filed Under: Electronics Theory Tagged With: Comparator

Homemade 2000 VA Power Inverter Circuit

Last Updated on November 16, 2024 by Swagatam 32 Comments

2000VAInverterCircuit

Making a power inverter circuit rated above 2000 VA is always difficult, mainly because of the involved transformer dimension which becomes quite huge, unmanageable and difficult to configure correctly. Introduction Power inverters in the range of KVA, requires huge current transferring capabilities for implementing the required operations as per the desired specs of the unit. Transformer being the main power […]

Filed Under: Inverter Circuits Tagged With: 2000, Homemade, Inverter, Power, VA

5 Easy 1 Watt LED Driver Circuits

Last Updated on June 18, 2022 by Swagatam 154 Comments

12Bwatt2Bled2Bdriver2Bcircuit

In this post I have explained about a few easy to build, compact 1 watt LED bulb circuits. The first circuit is SMPS based, the second design uses a capacitive power supply, while the remaining concepts show how to used a DC source to illuminate a 1 watt LED. Warning: Many of the circuits I […]

Filed Under: Lamps and Lights Tagged With: Circuits, Driver, Easy, LED, Watt

IC 7805, 7812, 7824 Pinout Connection Explained

Last Updated on October 16, 2022 by Swagatam 40 Comments

78XX voltage regulator range of ICs

In this post I have explained how to connect common 78XX voltage regulator ICs such as 7805, 7812, 7824 etc for getting fixed regulated output voltages at 5 V, 12 V, or 24 V outputs respectively. The input voltage must be at least 3 V higher than the desired output voltage. For example, if a […]

Filed Under: Power Supply Circuits Tagged With: 7805, 7812, 7824, Connection, Explained, Pinout

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