Bulb Failure Warning circuit

Auto 12V Bulb Failure Warning!

T.K. Hareendran - 05/04/15

Electronic circuits and projects are becoming more and more complex, which makes it increasingly difficult for a novice/student [...]
Optical Liquid Sensor Circuit

Optical Liquid Sensor Circuit

T.K. Hareendran - 05/01/15

Here is one simple design idea of a self-contained optical liquid sensor, realized using generally available electronic components. [...]
midget emergency light

Midget Emergency Torch Circuit

T.K. Hareendran - 04/03/15

Here is a tried and tested design of an ultra-simple emergency torch built around the inexpensive dc-dc converter [...]
Motorcycle Battery Level Indicator

Motorcycle Battery Level Indicator

Jim Keith - 03/24/15

This battery level indicator offers (2) incandescent lamps that light up progressively as the voltage increases. It is [...]
heart shaped pendant circuit

Electronic Heart Shaped Pendant

T.K. Hareendran - 03/11/15

Remember, a sweetheart is waiting in the wings to receive an unusual gift from you not only on [...]
Unijunction Transistor Flasher

Unijunction Transistor Flasher

Jim Keith - 03/02/15

Using the rather dated 2N4871 unijunction transistor it is possible to make a simple, but very bright, daylight [...]
LED lamp circuitry

LED Lamp Tear Down

T.K. Hareendran - 02/20/15

I think, it is a part of human nature, to probe and to discover, to find out how [...]

Nostalgic LED Driver – An Upshot

T.K. Hareendran - 10/27/14

Yes, for me, it's nostalgic to think about my favorite LED Driver LM3909 from NSC! This ubiquitous chip [...]
fluorescent lamp starter driver

Fluorescent Lamp Driver with Starter

joribo - 09/01/14

About the CD4049 there are contradictional info's. My data book from 1981 states that pin 16 is "3 [...]

MAX16814 High-Brightness LED Driver

GaryC - 08/08/14

The MAX16814 high-efficiency, high-brightness LED (HB LED) driver provides up to four integrated LED current- sink channels. An [...]
pt4115 dimmer led driver

High Power Dimming LED Driver with PT4115

P. Marian - 07/16/14

I was searching for a LED driver that can also act as dimmer for my 10 watts LEDs [...]
fluorescent lamp driver

Fluorescent Lamp Driver

joribo - 05/28/14

1. Starting a fluorescent on an inverter The 12V drivers for fluorescent lamps are tricky, because of the [...]
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