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New Circuit Projects

Bipolar Transistor Pin Identifier Circuit

Last Updated on June 20, 2019 by Swagatam 2 Comments

TransistorAnalyzer B

In the proposed BJT pin identifier circuit when the circuit is switched on, two jumpers will have both LEDs ON and the third will have only one LED illuminated. Investigated, Modified and Written By Abu-Hafss The E-B-C, NPN/PNP Detector Concept The jumper with one LED ON is connected to BASE. If it is red LED, […]

Filed Under: Sensors and Detectors Tagged With: Bipolar, Identifier, Transistor

Induction Heater Circuit Using IGBT (Tested)

Last Updated on January 24, 2024 by Swagatam 233 Comments

In this post I will comprehensively discuss how to build a high power 1000 watt induction heater circuit using IGBTs which are considered to be the most versatile and powerful switching devices, even superior to mosfets. Induction Heater Working Principle The principle on which induction heating works is very simple to understand. A magnetic field […]

Filed Under: Temperature Controllers Tagged With: Heater, IGBT, Induction, Tested

Lamp Outage Detector Circuit for Car Turn Signal

Last Updated on January 8, 2024 by Swagatam 2 Comments

Flasherwithmalfunctionindicator

The O.E.M. turn signal flashing units installed in automobiles have two  basic functions i.e. Flasher and Lamp outage detection. These flashers  are usually built with an 8-pin IC like U2044B, U6432B etc. which are  specifically made for automotive flashers. Designed and Written By Abu-Hafss Circuit Operation These flashers normally oscillate at about 1.4Hz. When a […]

Filed Under: Automobile Electronics Tagged With: Detector, Lamp, Outage, Signal, Turn

TSOP1738 Infrared Sensor IC Datasheet, Pinout, Working

Last Updated on January 8, 2024 by Swagatam 7 Comments

tsop17xx pinout diagram

Video showing the Testing of TSOP1738 with 38 kHz Frequency The TSOP17XX series of ICs are infrared sensor devices designed for sensing infrared frequencies only with a specific range of modulated frequency, and interpreting them into a proportionate magnitude of electrical pulses at the output. This is specifically done to make the sensor immune to […]

Filed Under: Datasheets and Components Tagged With: Datasheet, Infrared, Pinout, Sensor, TSOP1738, Working

Automatic Generator Choke Actuator Circuit

Last Updated on January 2, 2024 by Swagatam 2 Comments

automaticchokeoperatorcircuit

In this post I have explained a simple automatic generator choke actuator circuit using a straightforward delay OFF timer circuit and a solenoid device.  The circuit was requested by Mr. Bob Perry. Technical Specifications I’m in need of a time delay schematic for the following project. I have an electric generator that I can start by […]

Filed Under: Voltage Control and Protection Tagged With: Actuator, Automatic, Choke, Generator

Footstep Activated LED Trouser Light Circuit

Last Updated on December 21, 2023 by Swagatam 1 Comment

led trouser circuit

In this post I have explained how to transform your ordinary trousers into a chasing LED lit trousers which produces an shooting LED light chasing effect in response to your footstep movement or thumping. The Circuit Concept The proposed foot step activated chasing LED trouser will enable you to decorate any piece of clothing with LEDs […]

Filed Under: Mini Projects Tagged With: Activated, Footstep, LED, Light, Trouser

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