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:: Home » Power supply » Page 4

Power supply

USB 5V to 1.5V/ 3V Step Down Converter Circuit

Last Updated on: June 13, 2023 by Apichet Garaipoom
USB 5V to 1.5V/ 3V Step Down Converter Circuit

See USB 5V to 1.5V/3V Step Down Converter Circuit using LM317. With this, we can use MP3 players (requires only 1.5V AA battery) with USB(5V). Read more

Categories Power supply, DC converters 27 Comments

Simple transformerless power supply circuits

Last Updated on: June 20, 2022 by Apichet Garaipoom
DC regulated transformerless Power Supply

Learn these transformerless power supply circuits, use a capacitor instead, it smaller and lighter than transformer. There are circuits as follows. Read more

Categories Power supply Tags 9V Power Supplies, Negative Power Supplies, 6V Power Supplies, Transformerless Power Supply Circuits 77 Comments

1.5V to 5V boost converter circuit for microcomputer

Last Updated on: April 27, 2022 by Apichet Garaipoom
1.5V to 5V boost converter circuit using transistors for microcomputer

Small appliances have microcomputer that requires 5V power supply. Why it can use only 1.5V battery? The 1.5V to 5V boost converter circuit inside them. Read more

Categories Switching Mode, DC converters Tags Dual output power supply, 5V Switching Power Supplies, Simple DC Converters, Step Up Converters 16 Comments

Microcontroller | Digital power supply circuit, 5V 3A using LM350 or LM323

Last Updated on: September 23, 2023 by Apichet Garaipoom
5V 3A power supply circuit using LM350 for micro controller

See 5V 3A power supply circuit using LM323K or LM350 or 7805 by helping of the power transistor. For digital load, microcontroller, even raspberry-pi. Read more

Categories Power supply Tags Digital power supply circuit, 5 volts DC Power Supplies, 5V 5 Comments

12V 5V Dual Power Supply Circuit Diagram 3A max

Last Updated on: September 23, 2023 by Apichet Garaipoom
12V and 5V Dual Power Supply Circuit Diagram at 3A max

This is 5v 12v dual power supply circuit using 2N3055 and Zener diode for 12V then to LM309 or IC-7805 dc regulator IC for 5V output which easy circuit […] Read more

Categories Power supply Tags 12V Power Supply, 5V, 2N3055, Multi voltage regulated dc power supply 9 Comments
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Categories

  • Amplifiers (95)
    • Preamplifiers (20)
  • Power supply (86)
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  • DC converters (18)
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