In this post we study about a automatic fan speed regulator circuit for controlling the temperature of a heatsink and from preventing the temperature to reach dangerous levels. This approach is to ensure safeguarding of the connected devices wit the heatsink. Written by: Preeti Das With the help of this circuit the speed of a […]
Archives for 2015
12V LED Backpack Power Supply Circuit
In this article I have explained to make a simple 12v LED backpack power supply circuit for powering a 36watt LED lamp, which includes appropriately wired integrated sockets for enabling the attachment of external devices such as a regulated battery charger, ammeter, voltmeter etc. The idea was requested by Mr. Kevin Bates Backpack LED Charger/Driver […]
100 amp Variable Voltage Power Supply Circuit Diagram
The post describes a simple but extremely versatile 100 amp, variable voltage power supply circuit using just a few BJTs in parallel and in a common collector mode. The idea was requested by Mr. Andre. Technical Specifications Hello Swagatam, I was wondering if you could possibly assist me. on the blogs I have seen some […]
1 watt LED Lamp Circuit Diagram using SMD LEDs
The post comprehensively discusses the construction procedure of a 1 watt LED lamp using SMD LEDs such as 3528 smd LEDs or 2214 SMD LEDs. I have explained the details. 1 Watt LED vs 3528 smd LEDs or 2214 SMD LEDs Today 1 watt LEDs are very popular and these are utilized in most LED lamp […]
How to Design a Buck Converter Circuit: Formulas and Calculations
In this post I have explained the method of designing buck converter circuits by calculating all the required parameters, in order to ensure an optimal performance from these devices. We take the example of IC 555 buck converter typologies, and try to understand the optimizing techniques through equations and manual adjustments, for achieving the most […]
Simple Digital Stopwatch Circuit (4-Digit)
In this article we’ll study a digital stopwatch design configured around the very popular IC LM555 in conjunction with a 4-digit counter IC with multiplexed 7-segment output drivers (MM74C926). Written and Submitted by: Jennifer Goldy Circuit Operation IC MM74C926 is internally made up of a 4-digit counter, an output latch up stage, a npn output […]