The high power “zener diode” circuit using transistor shunt regulator presented here can be used for obtaining a highly accurate, temperature and voltage stabilized outputs from high current sources, safely. Normal Zener Limitation The low power zener diodes that we normally use in electronic circuits are specified to work with low currents, and therefore cannot […]
Diode
40A Diode with Reverse and Overvoltage Protection
In this post we study an outstanding high current diode which features not only an in-built reverse current protection but also an over-voltage protection for safeguarding sensitive electronic circuits against back emfs, transients and load dump occurrences. How 40 Amp Diode RBO40-40G/T Works The device RBO40-40G/T from STMicroelectronics comes in a TO-220 package and looks […]
High Current Zener Diode Datasheet, Application Circuit
Zener diodes that are normally available are mostly 1/4 watt or 1/2 watt types. And it is quite valid since the basic function of zener is to create stabilized reference voltage. Zener diodes are not designed for current regulation directly. However, for some applications where shunting excess voltage and current is necessary a high current […]
Ni-Cd Low Battery Monitor Circuit using Lambda Diode
The main feature of this lambda-diode low battery indicator for Ni-Cd batteries is that, the circuit itself consumes almost zero current, until the set low threshold level is reached and the indicator LED is illuminated. This feature makes the circuit very suitable for many low voltage battery operated systems, like radios, watches, timers, alarms, remote […]
Do We Need a Freewheeling Diode Across the Inductor in Boost Converter?
So here we are trying to understand whether we must put a freewheeling diode directly across the inductor in a boost converter or not, to safeguard the switching transistor? How Boost Converter Works So in a boost converter, we got one inductor, one power switch like a MOSFET, one diode and one output capacitor. Input […]
Simple Diode Circuits Explained
In this post I have explained how to use rectifier diodes for building some practical and useful electronic circuits. A diode is the most basic semiconductor electronic component, which is built with a single pn semiconductor junction. It has only two terminals, which are referred to as the anode and the cathode. Diodes can be […]