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Power supply

Constant current circuit using transistors

Last Updated on: May 20, 2022 by Apichet Garaipoom
Constant current circuit using transistors

Learning experiments with simple constant current circuit using transistors, a few plain parts, so helpful, especially Ni-HM battery charger.

Categories Power supply, Battery Chargers, Basic Electronics Tags darlington transistor circuit, Nickel Metal Hydride Battery Chargers 5 Comments

3.7V to 5V Boost/Step-up DC converter circuit using MC34063

Last Updated on: June 25, 2022 by Apichet Garaipoom
3.7V to 5V Boost/Step-up DC converter circuit using MC34063

Here is 3.7V to 5V boost converter or step up switching circuit using MC34063 and a few parts,1N5819,100uH. For 200mA-300mA of load current.

Categories Switching Mode, DC converters 2 Comments

1.5V/3V Step down switching regulator(5V input) using KA34063

Last Updated on: June 25, 2022 by Apichet Garaipoom
1.5V Step down switching regulator(5V input) using KA34063

It is a 1.5V Step down Switching regulator using KA34063/MC34063. Imagine you have an old MP3 player it needs a 1.5V battery. But you only have the power bank, USB port 5V output. Sure, it doesn’t work. Therefore, this circuit is a good solution.

Categories Switching Mode Leave a comment

0-30V Variable Power Supply at 3A

Last Updated on: May 25, 2022 by Apichet Garaipoom
0-30V Variable Power Supply at 3A

Cheap adjustable 0-30V 3A Laboratory DC Power Supply. high efficiency regulator circuit by IC regulator UA723-TIP3055 as power.Protect over load maximum 3A

Categories Variable Supply, Power supply Tags LM723 40 Comments

7805 datasheet voltage regulator IC: Pinout and example circuits

Last Updated on: June 23, 2022 by Apichet Garaipoom
7805 datasheet voltage regulator IC: Pinout and example circuits

Here is the 7805 5V voltage regulator datasheet the 7805 voltage regulator IC. They are designed to provide a constant 5V.

Categories Power supply, Basic Electronics Tags 5V Leave a comment
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