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SCR

BT169 SCR Datasheet [200 V, 0.5 A SCR]

Last Updated on March 25, 2023 by Swagatam Leave a Comment

BT169 pinout configuration

The BT169 is a thyristor or SCR (Silicon Controlled Rectifier) that is commonly used for switching applications in low-power electronic circuits. It can be used for small signal, low current applications. Its size is very small just like a BJT. Here are the full technical specifications of the BT169: Electrical Specifications Pinout: The BT169 SCR […]

Filed Under: Datasheets and Components Tagged With: 200, BT169, Datasheet, SCR

Semiconductor Tester Circuit [LED, Transistor, SCR Tester]

Last Updated on November 20, 2023 by Swagatam 2 Comments

LED diode transistor SCR tester circuit

The semiconductor tester circuit I have explained below performs continuity tests on SCRs, bipolar transistors, and diodes. How the Circuit Works A squarewave oscillator with a frequency of about 350 Hz is produced by a couple of IC 4049 gates, U1a along with U1b, R1, R2, and C1. The complementary outputs required for testing both NPN and […]

Filed Under: Meters and Testers Tagged With: LED, SCR, Semiconductor, Tester, Transistor

SCR Voltage Regulator Circuit

Last Updated on May 17, 2021 by Swagatam 15 Comments

SCR voltage regulator circuit compressed

In this article I have explained how to build a highly efficient voltage regulator circuit using an SCR and some other external components. This SCR voltage regulator circuit being a switching kind of regulator is more efficient than the normal 3 pin voltage regulators, or the transistor zener based series pass regulators circuits. How the […]

Filed Under: Power Supply Circuits Tagged With: Regulator, SCR, Voltage

Simple SCR Battery Charger Circuit

Last Updated on July 5, 2021 by Swagatam 31 Comments

SCR compressed

In this post I have explained a simple yet accurate SCR triggered battery charger circuit which can be used effectively for charging all types of battery, which includes, lead acid battery, Ni-Cd battery banks, Li-Ion battery, etc. This SCR charger can be seen implemented in most automobile garages, and is very popular among auto mechanics, […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, SCR, Simple

SCR Applications Circuits

Last Updated on April 13, 2024 by Swagatam 22 Comments

Half wave series static switch.

In this article I have explained many interesting SCR application circuits and also learn the main features and properties of an SCR also called a thyristor device. What’s an SCR or Thyristor SCR is the acronym of Silicon Controlled Rectifier, as the name suggests it’s a kind of diode or a rectifying agent whose conduction […]

Filed Under: Mini Projects Tagged With: Applications, Circuits, SCR

SCR Shunt Circuit for Protecting LED Drivers

Last Updated on August 20, 2019 by Swagatam 38 Comments

shunt

The post presents an effective method for protecting capacitive LED driver circuits through an SCR shunt regulator circuit and explains how it can prevent filter capacitors from blowing of and LEDs from getting destroyed. The remedy was requested by Mr. Max Payne. Protecting High Watt LEDs Please suggest regarding 3W, 5W LED bulb circuit design fault. […]

Filed Under: Power Supply Circuits Tagged With: Drivers, LED, Protecting, SCR, Shunt

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