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7 Simple Inverter Circuits you can Build at Home

4047 simple inverter circuit

These 7 inverter circuits may look simple with their designs, but are able to produce a reasonably high power output and an efficiency of around 75%. Learn how to build this cheap mini inverter and power small 220V or 120V appliances such drill machines, LED lamps, CFL lamps, hair dryer, mobile chargers, etc through a … Read more7 Simple Inverter Circuits you can Build at Home

How to Design a Flyback Converter – Comprehensive Tutorial

basic flyback configuration

A flyback configuration is the preferred topology in SMPS application designs mainly because it guarantees complete isolation of the output DC from the input mains AC. Other features include low manufacturing cost, simpler design and uncomplicated implementation. The low current DCM version of flyback converters which include output specification lower than 50 watt are more … Read moreHow to Design a Flyback Converter – Comprehensive Tutorial

Timer Based Cell Phone Charger Circuit

A simple cell phone charger with timer circuit is presented in the following article, which could be used for charging a given Mobile phone for a specified predetermined length of time. The idea was requested by Mr. Saad. Circuit Objectives and Requirements Could you design me this charger circuit ? Input 230V 60 Hz, and the … Read moreTimer Based Cell Phone Charger Circuit

Buzzer with Incrementing Beep Rate

The post discusses a buzzer circuit with an incrementing beeping rate, which can be used in critical warning signalling applications. The idea was requested by Mr. Lee. Buzzer with Progressive Beep Rate Could you help me with a circuit. I’ve been trying to find but so far had no luck! I need a pulsing piezo … Read moreBuzzer with Incrementing Beep Rate

Mains High Low Voltage Protection Circuit with Delay Monitor

The post explains an upgraded version of my previous mains 220V/120V high-low voltage cut off protection circuit which now includes a delayed restoration of power for the load with 3 LED power status indicators. The idea was requested by one of the dedicated members of this website. Circuit Objectives and Requirements I just followed you’re … Read moreMains High Low Voltage Protection Circuit with Delay Monitor

Timer Controlled Submersible Pumpset Circuit

The post details a timer circuit for submersible borewell pumpset which alternately switches the pumpset ON/OFF at a predetermined rate in order to allow the ground water sufficient time to restore at regular intervals and to ensure a consistent water supply to the attached overhead tank. The idea was requested by Mr. Siva. Circuit Objectives … Read moreTimer Controlled Submersible Pumpset Circuit