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Archives for 2012

Thermostat Delay Relay Timer Circuit

Last Updated on January 2, 2024 by Swagatam 14 Comments

thermostattimercircuit

The circuit given below describes a time delay relay system which is used for keeping a hot air blower working under a specifically programmed timing sequence. The idea was requested by Mr. Doug Shadix, I have explained more: Technical Specifications Hi Swagatam,Looks like you know your stuff when it comes to these timer circuits, this one […]

Filed Under: Timer and Delay Relay Tagged With: Delay, Relay, Thermostat, Timer

Motor Protection Circuits – Over Voltage, Over Heat, Over Current

Last Updated on December 28, 2023 by Swagatam 29 Comments

DCMotorOverUnderVoltageProtectorCircuit

In this post I have explained a few DC motor protection circuit from harmful conditions like over voltage and under voltage situations, over current, overload etc.. DC motor failures are commonly experienced by many of the users, especially in places where the relevant motor is run for many hours a day. Replacing motor parts or […]

Filed Under: Motor Controller Tagged With: Circuits, Heat, Motor, Over, Protection, Voltage

Hi-Fi 100 Watt Amplifier Circuit Using 2N3055 Transistors – Mini Crescendo

Last Updated on December 22, 2023 by Swagatam 207 Comments

powe supply

Video Demonstration of the Crescendo Amplifier The mini crescendo 100 watt transistorized amplifier circuit explained here was built and tested by me and am extremely pleased by its performance and also its ruggedness as far as maintenance and handling is concerned. Amplifier Class Basically, the entire configuration is a symmetrical class A amplifier incorporating an […]

Filed Under: Audio and Amplifier Projects Tagged With: 100, 2N3055, Amplifier, Mini, Transistors, Watt

DIY 100 Watt MOSFET Amplifier Circuit with PCB

Last Updated on November 26, 2023 by Swagatam 166 Comments

1002Bwatt2Bmosfet2Bamplifier2Bcircuit

MOSFET based amplifiers as we all know are outstanding with their sound qualities and they can easily beat the performance of other counterparts based on power transistors or linear ICs. Why use MOSFETs in Amplifiers Amplifiers based on mosfets are not always easy to design or make. Moreover after assembling a prototype, testing to perfection […]

Filed Under: Audio and Amplifier Projects Tagged With: 100, Amplifier, DIY, MOSFET, PCB, Watt

Vibration Meter Circuit for Detecting Vibration Strength

Last Updated on November 20, 2023 by Swagatam 12 Comments

simple vibration meter circuit 1

In this article I have explained a couple of simple vibration meter circuits which can detect and measure the strength of mechanical vibrations. Video Clip demonstrating the Vibration meter working The proposed circuits are built using transistors and also with an IC for getting a bar graph LED sequence for the level indications. The bar […]

Filed Under: Sensors and Detectors Tagged With: Detecting, Meter, Strength, Vibration

High Current Triac BTA41/600B – Datasheet, Application Note

Last Updated on November 17, 2023 by Swagatam 185 Comments

BTA41 600 triac datasheet

Triacs are one of the most important active electronic components which are exclusively used for power switching applications, these devices are especially suited to AC mains loads, and are able to switch large currents consistently. Triacs are the solid state replacements to mechanical relays, and come configured as static relays. The modern triacs today are highly sophisticated […]

Filed Under: Datasheets and Components Tagged With: 600B, BTA41, Current, Datasheet, High, Triac

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