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Triac

Understanding Triac Snubber Network Calculations

Last Updated on August 30, 2023 by Swagatam 2 Comments

controlling inductive load with triac

You may find electronic circuits that frequently utilize triacs to manage mains powered loads. However, these setups commonly feature an inconspicuous capacitor and resistor combination across the triac – a snubber network. The functions of these components are more intricate than they seem. Exploring snubbers and grasping basic triac theory is valuable. Triac Operation A […]

Filed Under: Electronics Theory Tagged With: Calculations, Network, Snubber, Triac, Understanding

Simple Triac Triggering Circuits Explained

Last Updated on November 17, 2023 by Swagatam 105 Comments

triac as switch in AC mains

In this post I have explained the fundamental methods of triggering a triac, and also discuss the right way to connect the terminals of a triac. Triacs are solid-state bidirectional thyristors that can switch across both the AC half cycles on a 120-volt or 240-volt Ac power system. A triac could be activated (switched on and […]

Filed Under: Electronics Theory Tagged With: Circuits, Explained, Simple, Triac, Triggering

Simple Triac Phase Control Circuits Explored

Last Updated on October 4, 2020 by Swagatam 23 Comments

half phase control

In a triac phase control circuit, the triac is triggered ON only for specific portions of the AC half cycles, causing the load to operate only for that period of the AC waveform. This results in a controlled supply of power to the load. Triacs are popularly used as a solid-state replacement of relay for […]

Filed Under: Electronics Theory Tagged With: Circuits, Control, Explored, Phase, Simple, Triac

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

SPDT Relay Switch Circuit using Triac

Last Updated on September 13, 2019 by Swagatam 18 Comments

SPDTtriac 1

An efficient solid state single pole double throw or SPDT switch can be built using triacs for replacing a mechanical SPDT. In this post I have explained a simple solid state triac SPDT relay circuit, using an optocoupler and a couple of triacs, which can be used as an effective replacement for mechanical relays. The […]

Filed Under: Inverter Circuits Tagged With: Relay, SPDT, Switch, Triac

Triac Battery Charger Circuit

Last Updated on September 13, 2019 by Swagatam 53 Comments

triac battery charger circuit 750x445

A triac based battery charger replaces a normal relay for automatically cutting off power to the battery very efficiently. In this post I have explained a simple a battery charger circuit using a triac auto shut-off facility. The circuit can be used for charging any high current, high AH types battery with a full-charge auto […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Triac

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