In the following post I have explained a very simple circuit idea which can be used for controlling a motor’s rotational direction i.e. for moving it either clockwise or anticlockwise through alternate miss calls from your cell phone. The Circuit Concept I have already discussed a novel cell phone controlled remote switch circuit where the […]
Archives for 2012
High Current Solar Battery Charger Circuit – 25 Amps
This circuit is capable of providing as high as 25 Amps of current at any specified voltage between 1.25 V to 30V as per the adjustment of the given pot. The current is constant irrespective of the voltage settings. The circuit can be used for charging batteries in range of 50 to 200 AH. How […]
Comparing MOSFETs with BJTransistors – Pros and Cons
The post comprehensively discusses the the similarities and difference between mosfets and BJTs and also their particular pros and cons. Introduction When we talk of electronics, one name becomes extremely related or rather common with this subject and that is the transistors, more precisely the BJT. Electronics is in fact based on these outstanding and indispensable member, without which […]
Battery Cut Off Charger Circuit Using a Single Relay
Amazed to hear this! Yep that’s actually possible, you would need only one relay and a handful of diodes to make a simplest one relay automatic battery charger circuit. How it Works The idea struck me while trying to design the easiest possible battery charger circuit for one my clients. The concept is simple; just […]
Make this LED Driver Circuit for Backlighting Small LCD Screens
In this post we study a LED driver circuit specially designed for backlighting LCD screens applications, Introductionlet’ learn more about this interesting device. Introduction Today LCD products have become very common and a part of our everyday life. Whether it’s your cell phone, DVD player, TV set, car, all incorporate LCD screens for indicating or […]
Illuminating 24 White LEDs from two 9 Volt Cells
In this post I have explained about a special circuit which can illuminate 24 high bright white LEDs from a single 9V PP3 battery, let’s unravel the secret behind this amazing circuit. Nine volt cells as the rating suggest, provides 9 volt output, but what about the current? A 9 volt PP3 battery will not […]