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Long Duration Timer Circuit using IC 4541: Working and Calculations

Last Updated on June 14, 2026 by Swagatam 2 Comments

The CD4541B is a CMOS programmable timer IC, and we use it where long delay interval is needed for a load, and also for jobs like frequency division, or timing pulse work. And all this happens with only just a few outside parts, not much around it. With ordinary IC 555, when delay becomes too […]

Filed Under: Timer and Delay Relay Tagged With: 4541, Calculations, Duration, Long, Timer, Working

XL6009 DC-DC Converter IC: Pinout, Working, Circuit Diagram, and Applications

Last Updated on June 14, 2026 by Swagatam 3 Comments

XL6009 is a DC-DC switching regulator IC, and we use it where lower voltage DC has to be lifted higher, or sometimes changed other ways, boost, buck-boost, flyback, even inverting, all that is possible depending how outside parts are connected. Why XL6009 is More Efficient Than Linear Regulators It is not like old regulator types […]

Filed Under: SMPS and Converters Tagged With: Applications, Converter, DC, Pinout, Working, XL6009

Blood Electrification Circuit: Explanation And Working Principle

Last Updated on July 10, 2026 by Swagatam 13 Comments

Here we are talking about one circuit which many people know by the name Blood Electrification Unit, and this circuit became known because of Bob Beck many years back in the 1990s time, so now people also call it Beck Blood Electrifier. This unit is nothing complicated looking but the idea sounds heavy because it […]

Filed Under: Health related Projects Tagged With: Blood, Electrification, Explanation, Principle, Working

DPDT Relay Working, Pinouts, Testing Explained

Last Updated on May 20, 2026 by Swagatam 23 Comments

In this post we are going to understand about how this DPDT relay actually works, how we identify its pinouts, and how we can use it in our projects. We shall go step by step so that you can feel confident with every small thing about it. Introduction We know that a DPDT relay means […]

Filed Under: Electronics Theory Tagged With: DPDT, Explained, Pinouts, Relay, Testing, Working

Servo Motor Working Explained

Last Updated on June 30, 2026 by Swagatam Leave a Comment

We know that servo motors already exist for very long time and we also see that many people use them in many applications. These motors look small but they give big power and also they save lot of energy. So now many people who like electronic things and who want to understand more about such […]

Filed Under: Motor Controller Tagged With: Explained, Motor, Servo, Working

IC 7815: Full Specifications, Working, Circuit Diagram

Last Updated on May 18, 2026 by Swagatam 5 Comments

In this post I am going to talk about this very common but very useful voltage regulator IC, that is called IC 7815. This chip is from the famous 78XX series of fixed voltage regulators. So the “15” in this number means this IC will always try to give +15V DC output, no matter what […]

Filed Under: Datasheets and Components Tagged With: 7815, Full, Specifications, Working

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