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How Thyristors (SCR) Work – Tutorial

Basically an SCR ( Silicon Controlled Rectifier) which is also known by the name Thyristor works quite like a transistor. What  SCR Stands for The device gets its name (SCR) due to its multi layered semiconductor internal structure which refers to the “silicon” word in the beginning of its name. The second part of the … Read moreHow Thyristors (SCR) Work – Tutorial

PWM Motor Soft Start Circuit to Prevent High Consumption during Power Switch ON

The post explains an effective PWM motor soft start circuit which can be used for enabling heavy motors with a soft start and thus prevent the equipment from drawing dangerous high currents. Why a Soft Start High wattage motors such pump motors or other forms of heavy industrial motors tend to draw huge current during … Read morePWM Motor Soft Start Circuit to Prevent High Consumption during Power Switch ON

PWM Controlled Fan Dimmer Switch Circuit

In this article we look into a simple 220V mains PWM controlled fan or light dimmer circuit which does not require a microcontroller or costly triac drivers for the intended operations. Capacitive Phase Chopping All Ordinary types fan dimmers which rely on capacitive phase chopping technology have one drawback in common, these generate a lot … Read morePWM Controlled Fan Dimmer Switch Circuit

2 Simple Induction Heater Circuits – Hot Plate Cookers

In this post we learn 2 easy to build induction heater circuits which work with high frequency magnetic induction principles for generating substantial magnitude of heat over a small specified radius. The discussed induction cooker circuits are truly simple and uses just a few active and passive ordinary components for the required actions. Update: You may … Read more2 Simple Induction Heater Circuits – Hot Plate Cookers

Surge Protected Cheap Transformerless Hi-Watt LED Driver Circuit

The increased number of complaints from the readers regarding burning LEDs associated with my earlier posted transformerless 1 watt LED driver circuit, compelled me to solve the issue once for all. The power supply section of the circuit discussed here remains exactly identical to the previous configuration, except the inclusion of the “switch ON delay … Read moreSurge Protected Cheap Transformerless Hi-Watt LED Driver Circuit

Adding a Soft Start to Water Pump Motors – Reducing Relay Burning Problems

In this post we discuss a few innovating and simple soft start circuit examples which may be implemented with heavy duty motors so that they are able to initiate with a soft start or a slow sluggish start instead of a sudden, bumpy start Why Soft Start is Crucial for Heavy Motors When heavy motor … Read moreAdding a Soft Start to Water Pump Motors – Reducing Relay Burning Problems

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