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Power Supply Circuits

Adjustable 1.2V to100V DC Buck Converter Circuit using LM5164

Last Updated on April 25, 2025 by Swagatam Leave a Comment

Ok now we have this LM5164 chip, and we want to drop voltage from 100V down to let’s say 12V, right? But we also need 1A output so we need to design everything properly. Now this chip is cool because it has ultra-low quiescent current (IQ) so it does not waste much power when it […]

Filed Under: Power Supply Circuits Tagged With: Adjustable, Buck, Converter, DC, LM5164, to100V

Make this 220V to 12V SMPS Using UC2842 IC

Last Updated on March 29, 2025 by Swagatam Leave a Comment

This UC2842 IC based SMPS design is simple, cheap and efficient kind of isolated power supply. We can use it in off-line stuff like AC-DC adapters, battery chargers and all those small power supplies. What is cool? It takes that high voltage AC then steps it down and then keeps input and output fully isolated […]

Filed Under: Power Supply Circuits Tagged With: 12V, 220V, SMPS, UC2842

DC-DC Boost Module (0.9V~5V) to 5V 600mA USB Step-up Board

Last Updated on May 9, 2025 by Swagatam Leave a Comment

So this is a DC-DC boost converter that takes a low voltage (0.9V to 5V) and steps it up to a stable 5V. We use this when we have a small battery, but we need 5V output, like for USB devices. It is super useful for battery-powered projects and small electronics. Main Features How It […]

Filed Under: Power Supply Circuits Tagged With: 600mA, Boost, DC, Module, Step, USB

XL3608 5V, 9V,12V DC, 2 Amp Boost Converter module

Last Updated on February 26, 2025 by Swagatam Leave a Comment

This XL3608 2A mini DC to DC Boost Converter module is super compact and efficient and it is just perfect for powering all sorts of devices and systems. Let’s learn about its main features in greater details: Main Features: Input Voltage Range: We can feed this module with an input voltage ranging from DC 2.5-11.5V. […]

Filed Under: Power Supply Circuits Tagged With: 12V, Boost, Converter, DC, Module, XL3608

Step-Down Adjustable Voltage, Current Regulator Circuit using LM2673

Last Updated on February 7, 2025 by Swagatam Leave a Comment

The LM2673 series of regulators is a collection of monolithic integrated circuits that are designed to provide all the active functions needed for making a step-down, or buck converter, switching regulator circuit. This means that they are capable of driving loads of up to 3 amps while maintaining excellent line and load regulation characteristics. One […]

Filed Under: Power Supply Circuits Tagged With: Adjustable, Current, Down, Regulator, Step, Voltage

High Voltage Constant Current Source Circuit

Last Updated on March 22, 2024 by Swagatam 6 Comments

high voltage constant current source circuit

The presented circuit offers an adjustable constant current source capable of reaching up to 60mA, operating at voltages as high as 350V. Circuit Description The input stage, consisting of resistor R1 and zener diode ZD1, delivers 8V to the regulator (a 7805), maintaining this voltage relative to its reference line. This voltage level ensures sufficient […]

Filed Under: Power Supply Circuits Tagged With: Constant, Current, High, Source, Voltage

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