Tuesday, September 30, 2014

Insect Wing Signal Detector Circuit

The article discusses a VLF receiver circuit used for detecting insect wing beat signals, the idea was investigated and built by Mr. Steven Chiverton.

Free 200 Volts Just Above your Head

Lightning in skies is the phenomenon which proves beyond doubt that free electrical energy could be there in abundant quantities all around us.

Monday, September 29, 2014

Cellphone Display Light Triggered Remote Control Circuit

The post explains a cell phone remote control circuit using the light from its display. The idea was requested by  Dondon.

Friday, September 26, 2014

Testing an MOV (Metal Oxide Varistor) Surge Protector Device

The article discusses a set up for testing and using MOVs which are special devices  specified for absorbing instantaneous high surge currents that may accidentally occur in our mains electrical lines. The idea was requested by Mr. Kevin

Tuesday, September 23, 2014

Water Level Controller Circuit using Sequential Timers

The post discusses an industrial water level controller system using discretely sequential timers stages. The idea was requested by one of the dedicated members of this blog.

Automatic PIR Controlled Fan Circuit for Schools and Colleges

The post explains a simple automatic PIR controlled fan circuit for school college use, which responds and switches ON only in the presence of a human (students) in the classroom. The idea was requested by Mr. Souren Bhattacharya.

Monday, September 22, 2014

Solar Garden Light with Programmable Timer Circuit

The post explains a solar garden light circuit with programmable timer controller which enables the connected LEDs to light up or shut off after some delay, as preferred by the user, thus it's not entirely dependent on the solar panel parameters. The idea was requested by "Unknown".

Sunday, September 21, 2014

32 V, 3 Amp SMPS LED Driver Circuit

The article presents a 32 V, 3 amp SMPS circuit which may be specifically used for driving 100 watt LED modules, rated with the same specs.

Saturday, September 20, 2014

Arduino Mains Failure Battery Backup Circuit

The article explains a simple mains failure backup circuit for providing Arduino boards an uninterruptible supply during such situations. The idea was requested by Mr. Fredrik.

Friday, September 19, 2014

Soil Moisture Sensor Meter with Automatic Water Sprayer Circuit

The article explains a 10 stage soil moisture sensor meter circuit with an integrated automatic water sprayer mechanism for restoring  the critical condition of the soil. The idea was requested by Mr. Remy.
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.