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Voltage Control and Protection

How RCCB Works [with Circuit Diagram]

Last Updated on January 2, 2024 by Swagatam 8 Comments

RCD relay dismantled view compressed

A Residual Current Circuit Breaker (RCCB) or a ground fault circuit interrupter (GFCI), is a form of circuit breaker which will shut down mains AC power as soon as it detects an discrepancy between the incoming current and the outgoing current, through it. The primary objective of an RCCB device is to cut-off main AC […]

Filed Under: Voltage Control and Protection Tagged With: RCCB, Works

Prevent Relay Arcing using RC Snubber Circuits

Last Updated on January 2, 2024 by Swagatam 143 Comments

arc suppression compressed

In this article I have explained the formula and techniques of configuring RC circuit networks for controlling the arcing across relay contacts while switching heavy inductive loads. Arc suppression An arc is produced across the contacts when a switch or a relay is opened. With time, this condition can wear down the contacts. To overcome […]

Filed Under: Voltage Control and Protection Tagged With: Arcing, Circuits, Prevent, RC, Relay, Snubber

5 KVA to 10 KVA Automatic Voltage Stabilizer – 220 Volts, 120 Volts

Last Updated on January 3, 2024 by Swagatam 94 Comments

LM324 Operational Amplifier

Voltage stabilizer in the range of kVAs are powerful AC voltage stabilizer units specially designed for controlling and stabilizing high voltage fluctuations, for high power electrical equipment. In this article I have explained an easy to build a 7 stage high wattage in the order of 5000 to 1000 watts stabilizer circuit which can be […]

Filed Under: Voltage Control and Protection Tagged With: 220, Automatic, KVA, Stabilizer, Voltage, Volts

Surge Arrestor Circuit with Measuring Facility

Last Updated on January 2, 2024 by Swagatam 22 Comments

surge

In this post I have explained about a simple surge voltage protector circuit using a fuse and a triac crowbar circuit and also learn the method to record and measure the last maximum surge that could have destroyed the specified load in case the protection was not introduced. The idea was requested by Mr. Akram. […]

Filed Under: Voltage Control and Protection Tagged With: Arrestor, Facility, Measuring, Surge

Triac Phase Control using PWM Time Proportional

Last Updated on January 2, 2024 by Swagatam 19 Comments

time2Bprop

A triac phase control using a PWM circuit can be useful only if it’s implemented using a time-proportional format, otherwise the response could be haphazard and inefficient. In a few of of my earlier articles as given below: Simple Remote Controlled Fan Regulator Circuit Push Button Fan Regulator with Display Circuit Dimmer Circuit for LED […]

Filed Under: Voltage Control and Protection Tagged With: Control, Phase, Proportional, PWM, Time, Triac

Simple Refrigerator Protector Circuit

Last Updated on January 2, 2024 by Swagatam 104 Comments

This simple refrigerator protector circuit is actually a delay ON timer circuit which makes sure that whenever a power failure occurs or in case abrupt power fluctuations take place, the refrigerator is never allowed to switch ON instantly, rather after a delay of a few moments. Conventional Protection Features Today most modern refrigerators are equipped […]

Filed Under: Voltage Control and Protection Tagged With: Protector, Refrigerator, Simple

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