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Transistor Circuits

Simple Current Limiter Circuit using Transistors

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

Simple Current Limiter Circuit using Transistors gives tutorial to show how to make a circuit that stop giving too much power to other electronics. It helps to protect from overload by using two transistors and one special resistor. What is a Current Limiter Circuit using Transistors: A transistor current limiter circuit stops too much current […]

Filed Under: Power Supply Circuits, Transistor Circuits

Simple Voltage Regulator Circuit using Transistor and Zener

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This Simple Voltage Regulator Circuit using Transistor and Zener work like bodyguard for electricity. It uses one transistor like door keeper and one special Zener diode to keep voltage not going up-down. Zener diode gives fixed voltage and transistor follow that voltage to keep same for our device. This project is good when voltage goes […]

Filed Under: Power Supply Circuits, Transistor Circuits

Simple Single Transistor LED Flasher Circuit

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This Simple Single Transistor LED Flasher Circuit show smallest LED flasher circuit ever made. LED blink ON and OFF again and again by using only one transistor, one resistor and one capacitor. Just think of only one transistor and some easy parts and LED will start flashing, look nice! This is type of circuit one […]

Filed Under: LED and Lamps, Transistor Circuits

Inverter Circuit using Two 2N3055 Transistors

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

In this post we show how to make an easy and Inverter Circuit using Two 2N3055 Transistors. It works with 12V battery and gives around 100 watt 220V AC power. It is good for using with small home devices. Circuit Working: Parts List: Category Component Quantity Resistors 100Ω 10W Wire Wound 2 15Ω 10W Wire […]

Filed Under: Inverter Circuits, Transistor Circuits

Small Amplifier Circuit using Transistors

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This is one Small Amplifier Circuit using Transistors which work like basic audio amplifier. It makes weak sound signal more strong so sound come better like in car radios. Now lets see how this circuit is build and how it work. Circuit Working: Parts List: Category Component Quantity Resistors 100k 1/4W CFR 1 1k 1/4W […]

Filed Under: Amplifier Circuits, Transistor Circuits

220V SMPS Circuit using One Transistor

Last updated on 12 July 2025 by Admin-Lavi Leave a Comment

This article teaches how to make 220V SMPS Circuit using One Transistor, it connect to wall socket of 220V and only uses one transistor called MJE13005. No need for special chip or many extra parts to the control power. It uses one special diode and wire coil on transformer to control voltage in different way. […]

Filed Under: Power Supply Circuits, Transistor Circuits

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