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Newly Updated Circuit Projects:

Simple Ceiling Fan Regulator Circuit

Last Updated on June 30, 2026 by Swagatam 18 Comments

ceiling fan regulator circuit

A simple electronic ceiling fan regulator circuit using a triac and a diac is a common type of circuit which is used to control the speed of a ceiling fan. This circuit basically works using phase control principle, in which the voltage supplied to the fan motor is varied by controlling the firing angle of […]

Filed Under: Motor Controller Tagged With: Ceiling, Regulator, Simple

Understanding Triac Snubber Network Calculations

Last Updated on May 20, 2026 by Swagatam 2 Comments

controlling inductive load with triac

You may find electronic circuits that frequently utilize triacs to manage mains powered loads. However, these setups commonly feature an inconspicuous capacitor and resistor combination across the triac – a snubber network. The functions of these components are more intricate than they seem. Exploring snubbers and grasping basic triac theory is valuable. Triac Operation A […]

Filed Under: Electronics Theory Tagged With: Calculations, Network, Snubber, Triac, Understanding

GSR Sensor Circuit for Biofeedback Measurements

Last Updated on May 24, 2026 by Swagatam 7 Comments

GSR meter circuit

In this post I have explained how to build a very simple GSR sensor circuit using just a couple of transistors and a few other passive components. A GSR (Galvanic Skin Resistance) sensor, also known as a skin conductance or electrodermal activity sensor, measures the electrical conductance of the skin, which changes in response to […]

Filed Under: Health related Projects Tagged With: Biofeedback, GSR, Measurements, Sensor

High Voltage Constant Current Source Circuit

Last Updated on March 22, 2024 by Swagatam 10 Comments

high voltage constant current source circuit

The presented circuit offers an adjustable constant current source capable of reaching up to 60mA, operating at voltages as high as 350V. Circuit Description The input stage, consisting of resistor R1 and zener diode ZD1, delivers 8V to the regulator (a 7805), maintaining this voltage relative to its reference line. This voltage level ensures sufficient […]

Filed Under: Power Supply Circuits Tagged With: Constant, Current, High, Source, Voltage

100V Regulated Power Supply Circuit Diagram with Over Current and Short Circuit Protection

Last Updated on January 17, 2025 by Swagatam 5 Comments

adjustable regulated power supply circuit with current limit and short circuit protection

A trustworthy and adaptable power source is essential in the world of electronic circuits. The design we present here not only offers a regulated output voltage range of 50V to 100V but also integrates safeguards to prevent potential mishaps. Let’s examine the specifics of this power supply circuit, discovering its special characteristics and how it […]

Filed Under: Power Supply Circuits Tagged With: 100V, Current, Over, Power, Regulated, Supply

3 Useful Temperature Alarm Circuits Explained

Last Updated on September 25, 2023 by Swagatam 15 Comments

temperature alarm circuit diagram

In this post I have explained the working of 3 interesting and useful temperature alarm circuits through detailed circuit diagrams. A temperature alarm circuit is basically a device which is designed to detect a temperature threshold and sound an alarm as soon the temperature exceeds over, or drops below the desired temperature detection threshold. 1) […]

Filed Under: Temperature Controllers Tagged With: Alarm, Circuits, Explained, Temperature, Useful

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