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## Make Step Down Transformers with Calculations

Nearly every single electronic circuit requires a separate power supply, which is often in the form of a battery or a rectified power supply. In this article we are going to discuss how to make small basic transformers which are typically applied in mains-operated power supplies, such as step down transformers Introduction This will likely … Read moreMake Step Down Transformers with Calculations

## Over Current Cut-off Power Supply Using Arduino

In this post we are going to construct a battery eliminator / DC variable power supply which will automatically cut-off the supply, if the current flow through the load exceeds the preset threshold level. By Girish Radhakrishanan Main Technical Features The proposed over current cut-off power supply circuit using Arduino has 16 X 2 LCD display, … Read moreOver Current Cut-off Power Supply Using Arduino

## 2 Compact 12V 2 Amp SMPS Circuit for LED Driver

In this post we comprehensively discuss a 2  simple 12V 2 amp SMPS circuit using the IC UC2842. We study a 2 amp flyback design by evaluating various formulas, which provides the exact selection details for the transformer winding and the parts specifications. Design#1: Introduction The first design is based on the versatile IC VIPer53-E. The … Read more2 Compact 12V 2 Amp SMPS Circuit for LED Driver

## 0-40V Adjustable Power Supply Circuit – Construction Tutorial

This multipurpose general purpose supply generates as much as 2.5 amps from zero to 20 volts or up to 1.25 amps from 0-40 volts. Current limiting is variable within the entire range for either output options. By Trupti Patil Power Supply Main Specifications:   AN IDEAL POWER SUPPLY must provide a voltage that is variable … Read more0-40V Adjustable Power Supply Circuit – Construction Tutorial

## 3 Solid-State IC Based 220V Adjustable Power Supply Circuits

Three simple yet efficient 220V IC based solid state transformerless adjustable solid-state power supply circuits are discussed here. The first one works using a single IC SR087. The design does not depend on high value capacitors or inductors and yet is capable of delivering 100mA current to the attache load. 1) Main Features and Board … Read more3 Solid-State IC Based 220V Adjustable Power Supply Circuits

## Low Dropout (LDO) Voltage Regulator IC KA378R12C – Pinout and Working Specs

The article explains the pinout functions, and datasheet of a versatile low dropout (LDO) voltage regulator IC KA378R12, and also presents a circuit diagram showing how to use the IC in practical applications. A related question was asked by Mr. Jon, which inspired me to update this post. The question can be seen in the … Read moreLow Dropout (LDO) Voltage Regulator IC KA378R12C – Pinout and Working Specs