In this post I have explained a circuit concept for enabling cars with an add-on automatic safety park light which triggers during night and signals the position of the car and consequently prevents a mistaken collision or dashing by another vehicle. The design ensures minimum consumption and relatively higher brightness for the involved LED lights. […]
Archives for 2015
Bathroom Lamp Timer Circuit with Buzzer
The simple bathroom lamp timer circuit features a delay OFF timer which switches OFF the triggered lamp after a set predetermined time delay, additionally the circuit also includes a delay ON timer circuit which is appropriately set such that a warning tone is generated a few seconds before the lamp is about to shut off. […]
5 Simple Siren Circuits you can Build at Home
In this post I have explained about a 5 simple siren circuits, using Arduino and also with ordinary components such as transistors and capacitors yet is able to produce an alarm sound at an excruciating level. The idea was contributed by “Abu-Hafss” Deeper in the article we also learn to make an advanced Arduino based […]
Designing a Customized Battery Charger Circuit
I have designed and published a variety of battery charger circuits in this website, however the readers often get confused while selecting the right battery charger circuit for their individual applications. And I have to explicitly explain each of the readers regarding how to customize the given battery charger circuit for their specific needs. This […]
Solar, Wind, Hybrid Battery Charger Circuits
In this article I have explained a dual input hybrid solar and wind battery charger circuit using cheap and ordinary components. The idea was requested by one of the interested members of this blog. Technical Specifications Good after noon sir am designing a ” Solar and Wind energy harvest regulator circuit” which has two inputs […]
Adjustable 3V, 5V, 6V, 9V,12V,15V Dual Power Supply Circuit
The purpose of this paper is to detail a variable dual lab power supply circuit which has an adjustable range from 3V, 5V, 6V, 9V, 12V, and 15V or even more at an output current rate of 1 amp. Written By: Dhrubajyoti Biswas The Dual Power Supply Concept In regard to positive volt it is […]





