Tuesday, September 2, 2014

Laptop Anti-theft Security Alarm Circuit

The post explains a simple security alarm circuit which can used with any concerned object such as a laptop which needs to be protected, when an intruder tries to approach the unit or makes an attempt to steal it the connected alarm is instantly raised. The idea was requested by one of the dedicated readers of this blog.

Saturday, August 30, 2014

Making an Overunity Generator Using two Motors

The post discusses an over unity generator set up using two motors and an inverter for getting a sustained free energy infinitely. The idea was suggested by Mr. Dare.

Friday, August 29, 2014

Chasing Car Tail Light Circuit Using 1 watt LEDs

The post discusses the construction chasing car tail light circuit using high bright 1 watt amber LEDs. The idea was requwsted by Mr. Brian Walton.

Tuesday, August 26, 2014

Aquarium Fish Feeder Timer Controller Circuit

The post explains an aquarium feeder timer circuit which sustains a set of continuous operations as per a predetermined timing sequence through the respective pot controls. The idea was requested by Mr. Mike.

Monday, August 25, 2014

Industrial Tank water fill/drain controller circuit

The post presents an industrial water level controller with drain timer circuit. The idea was requested by Mr. Lanfrank.

Friday, August 22, 2014

Car Power Window Controller Circuit - Part 1

The article explains a car power window controller circuit using a single push button or a couple of push buttons. The idea was requested by Mr. Win.

Car Power Window Controller Circuit - Part2

In the previous post we discussed the circuit design of an automatic car power window controller, here we'll learn how it may be enhanced with more features.

Wednesday, August 20, 2014

1.5 V Inductance Meter Circuit

Here a simplest yet quite accurate inductance meter is presented, which can be built within few minutes. Furthermore, the circuit can be powered-up with a single 1.5V cell. However, a frequency meter would be required to work-out the inductance.

Lithium Polymer Battery Charger Circuit

The post explains a simple lithium polymer battery with over charge cut off feature. The idea was requested by Mr. Arun Prashan.

Sunday, August 17, 2014

Cellphone Controlled Car Starter Circuit

The post presents a simple cellphone triggered remote control circuit that can be applied as a cellphone operated remote car starter. The unit would cost less than $20 to build.
Readers are advised to proceed with the construction of the presented circuits only after understanding the concepts from the core. Not adhering to this can lead to failures and frustrations.