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Electronics Theory

Solid State Relay (SSR) Circuit using Two MOSFETs

Last Updated on August 19, 2026 by Swagatam 204 Comments

SSR concept

SSR or Solid state relays are high power electrical switches that work without involving mechanical contacts, instead they use just a couple of solid state semiconductors like MOSFETs for switching an electrical load, smoothly, and with high efficiency. SSRs can be used for operating high power loads, through a small input trigger voltage with negligible […]

Filed Under: Electronics Theory Tagged With: MOSFETs, Relay, Solid, SSR, State

How to Connect Two TRIACs in Series for High Voltage Loads

Last Updated on July 20, 2026 by Swagatam Leave a Comment

Normally, for standard 220V AC household projects, a single 600V or 800V TRIAC is more than enough. But what if you are working with a very high voltage line, like 1000V AC? A single common TRIAC will immediately burn and short circuit because it cannot handle that much voltage stress. To solve this, we can […]

Filed Under: Electronics Theory Tagged With: Connect, High, Loads, Series, Triacs, Voltage

How to Connect Triacs in Parallel for High Current Loads: Circuit Diagram

Last Updated on July 11, 2026 by Swagatam Leave a Comment

Sometimes we make electronic circuit designs, and then we see that one single TRIAC cannot take all the big current of a very heavy load. This heavy load can be a huge heater, a big motor, or too many lights. In this condition, we get a simple idea. We think that we can connect two […]

Filed Under: Electronics Theory Tagged With: Connect, Current, High, Loads, Parallel, Triacs

How to Understand and Use white LEDs – Datasheet

Last Updated on June 30, 2026 by Swagatam 10 Comments

whiteled

If you are wondering how to correctly use white LEDs in circuits so that they can be illuminated safely without damaging, then this post might help you to evaluate the same. Introduction White LEDs are the future lighting solutions for our cities and homes. They will be easily replacing the traditional CFL and other flurescent […]

Filed Under: Datasheets and Components, Electronics Theory Tagged With: Datasheet, LEDs, Understand, white

IC 4060 Pinouts Explained

Last Updated on June 7, 2026 by Swagatam 69 Comments

IC4060PinOut

Another versatile device, the IC 4060 has numerous applications and can be used for implementing various useful functions in an electronic circuit. Introduction Basically the IC 4060 is a oscillator/Timer IC and can be used for producing discretely variable accurate time intervals or delays. Alternatively it may also be used as an oscillator for acquiring […]

Filed Under: Electronics Theory Tagged With: 4060, Explained, Pinouts

How to Use Transistors

Last Updated on June 7, 2026 by Swagatam 50 Comments

TO 92 1

If you have understood correctly, how to use transistors in circuits, you might have already conquered half of  electronics and its principles. In this post we make an effort in this direction. Introduction Transistors are 3 terminal semiconductor devices which is able to conduct relatively high power across their two terminals, in response to a […]

Filed Under: Electronics Theory Tagged With: Transistors

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