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Power supply

Let’s learn how Cell Phone Charger circuit work

Last Updated on: July 14, 2025 by Apichet Garaipoom
Cell Phone Charger circuit work

Modify cheap mobile phone charger inside is simple DC switching regulator circuit and can apply many ways, such as DC power supply Read more

Categories Power supply 13 Comments

Recycling electronic circuit boards to build 5V Regulator

Last Updated on: June 29, 2025 by Apichet Garaipoom
Recycling electronic circuit boards to build 5V 1A Regulator

I believe recycling electronic circuit boards with electronic circuits is good. Let’s create 5V regulator circuit for digital experimentation Read more

Categories Green Energy, Power supply 3 Comments

9V regulated power supply circuit diagram

Last Updated on: April 17, 2025 by Apichet Garaipoom
Make 9V regulated power supply circuit

Create 9V regulated power supply circuit using 7809 and transistor. For circuit requires stable voltage, low noise signal, and without AC voltage leakage. Read more

Categories Power supply 8 Comments

TL431 circuits as shunt regulators and more

Last Updated on: April 18, 2025 by Apichet Garaipoom
Experiment TL431 circuits as shunt regulators and more

Let’s use TL431 circuit instead Zener. It’s shunt regulator with high efficient, easily uses, cheap. Often, found in common circuits. Read more

Categories Basic Electronics, Green Energy, Power supply 19 Comments

5V Low Dropout Regulator Circuit using transistor and LED

Last Updated on: January 28, 2025 by Apichet Garaipoom
5V Low Dropout regulator-circuit using transistor LED

Make 5V low dropout regulator circuit using transistor and LED lowest voltage input is 6V so across it is 1V only, make output is 5V 0.5A Read more

Categories Power supply 1 Comment
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