Here is a SCR and Triac gate resistor calculator along with the full detailed explanation. This will help users to calculate the right value of gate resistor for triggering an SCR or TRIAC safely. Calculator by homemade-circuits.com SCR / TRIAC Gate Resistor Calculator Gate Trigger Voltage (Vgt): Gate Trigger Current (Igt): Trigger Supply Voltage (Vs): […]
SCR
BT169 SCR Datasheet [200 V, 0.5 A SCR]
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 […]
Semiconductor Tester Circuit [LED, Transistor, SCR Tester]
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 […]
SCR Voltage Regulator Circuit
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 […]
Simple SCR Battery Charger Circuit
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, […]
SCR Applications Circuits
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 […]