Brushless (BLDC) Motor Controller Circuit

Nov 30, 2014

The post discusses a simple two magnet BLDC controller circuit incorporating a single hall sensor.

RF Signal Jammer Circuit

Nov 29, 2014

The post describes a simple homemade RF signal jammer circuit that can be used for jamming any RF signal within a radial range of 10 meters. The idea was requested by one of the interested readers of this blog.

How Brushless DC (BLDC) Motors Work

Nov 28, 2014

The post details the basic operating concept of brushless DC motors also called BLDC motor.

Long Duration Timer Circuit Using Transistors

Nov 27, 2014

The articles explains a very simple long duration timer circuit which uses only a couple of transistors for the intended operations.

Car Laptop Charger Circuit Using Boost Converter

The post discusses a simple car laptop charger circuit for charging laptops from a 12V car battery. The idea was requested by one of the avid readers of this blog.

Solar Panel Enhancer Using Solar Mirror Concept

Nov 26, 2014

In this post we learn a couple of homemade techniques for enhancing a solar panel output performance by many folds.

High Current Transformerless Power Supply Using Dimmer Switch

Nov 24, 2014

In this post we discuss an effective and efficient high current capacitive compact power supply using a dimmer switch gadget.

Transcutaneous Nerve Stimulator Circuit

Nov 22, 2014

Transcutaneous electrical nerve stimulation (TENS) is a term typically referred to the use of nonpharmacologic or noninvasive kind of treatment for neutralizing superficial pains.

Super Capacitor Charger Circuit

Nov 21, 2014

 The post explains a super capacitor charger circuit for charging super capacitors which converts a 12V car battery voltage to an elevated 16V for charging a bank of super capacitors. The idea was requested by Miariver.

Self Optimizing Solar Battery Charger Circuit with Buck Converter

The post discusses a simple IC 555 based self optimizing solar battery charger circuit with buck converter circuit that automatically sets and adjusts the charging voltage in response to the fading sunlight conditions, and tries to maintain an optimal charging power for the battery, regardless of the sun ray intensities.

Heart Rate Monitor, Alarm Circuit

Nov 20, 2014

The post explores a simple circuit which may be used for monitoring the critical heart rate of a patient (senior citizen), the circuit also includes an alarm for indicating the situation.  The idea was requested by Mr. Raj Kumar Mukherji

Heart Rate Sensor with Processor Circuit

The sensing of the heart pulses is basically done by two IR photo diodes one being the transmitter of IR while the other acceptor.

Solar Induction Heater Circuit

Nov 17, 2014

In this post we discuss an induction cooker/heater design which may be powered from a solar panel voltage. The idea was requested by Mr. Vamshee

Office Call Bell Network Circuit with LED Monitor

Nov 15, 2014

The post explains an office call bell network circuit for office complexes which could be used for calling and monitoring office member's attendance and response from the particular intended office chamber. The idea was requested by Mr. Rajib Banerjee

Sine Wave Inverter Circuit using Bubba Oscillator

Nov 13, 2014

In this post we learn how to make a simple sine wave inverter using bubba oscillator sine wave generator. The idea ws requested by Mr. Ritwik Naudiyal.

48V Inverter Circuit

Nov 10, 2014

The post explains a simple 48V inverter circuit which may be rated at as high as 2 KVA. The entire design is configured around a single IC 4047 and a few power transistors.

Home Solar Electricity Set up Circuit for an Off-the-grid Living

Nov 6, 2014

The post illustrates a simple calculated configuration which may be used for implementing any desired sized solar panel electricity set up for remotely located houses or for achieving an off the grid electricity system from solar panels.

150 LED PWM Tubelight Circuit

The post discusses a 555 based PWM circuit which can be implemented as a 150 nos or more LED light intensity controller circuit. The idea was requested by Mr. Anil

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