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:: Home » Electronics Projects Circuits

Very simple amplifier circuit using transistor 2N3904

Last Updated on: June 29, 2024 by Apichet Garaipoom

It is Very simple amplifier circuit using transistor 2N3904 only, low noise than normal IC circuits, low distortion,frequency response: 20 Hz to 20 kHz. Read more

Categories Amplifiers, Preamplifiers Tags 2N3904, NPN transistor circuit 14 Comments

Recycling Inductors from Old and Broken Electronics

Last Updated on: June 29, 2025 by Apichet Garaipoom

I recommend that you make an inductor from e-waste or a DIY inductor from a fluorescent light bulb. Of course, it is free. Read more

Categories Basic Electronics, Recycling electronics Tags Basic components TIPs 11 Comments

LED flashlight circuit or LED torch with 1.5V battery

Last Updated on: February 27, 2024 by Apichet Garaipoom
High power 6 LED Flashlight for 1.5V AA battery

This high power led flashlight circuit look like torch by 1.5V battery only so it can be used, small so Easy to carry in various places,also very bright […] Read more

Categories Lightings Tags LED flashers, Simple DC Converters, Step Up Converters, Tested 38 Comments

AC variable power supply, 0-30V 3A

Last Updated on: July 23, 2024 by Apichet Garaipoom
AC variable power supply

This is AC variable power supply circuit that apply output of 0-30V at 3A by use electronic components, bridge diode,and more, to control voltage[…] Read more

Categories Power supply, Variable Supply Tags 0-30V power supply 7 Comments

Diy digital voltmeter panel meter 0-50V

Last Updated on: August 19, 2022 by Apichet Garaipoom

This is Diy digital voltmeter panel meter 0-50V is 0-50V scale. Display with LED 7 segment. In cost 3$ dollar only, builds simple regulator dc power supply Read more

Categories Meters & Detectors Tags 9V Power Supplies, Volt Meters 4 Comments
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About ElecCircuit.com

Electronic Circuits and Mini Projects. We made the ElecCircuit.com, to share our learning experiences on electronics circuits in simple ways.

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