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220V AC to 12V DC Flyback SMPS Circuit using IC 555 (7555)

Last Updated on June 10, 2026 by Swagatam Leave a Comment

This practical flyback SMPS circuit uses ICM7555 as the main oscillator, and yep the whole idea is to take 220V AC mains directly then convert it into isolated low voltage DC through a ferrite transformer.. Unlike many PWM controller designs, here we have very few parts but still it gives mains isolation, voltage feedback, current […]

Filed Under: SMPS and Converters Tagged With: 12V, 220V, AC, DC, Flyback, SMPS

XL6009 DC-DC Converter IC: Pinout, Working, Circuit Diagram, and Applications

Last Updated on June 14, 2026 by Swagatam 3 Comments

XL6009 is a DC-DC switching regulator IC, and we use it where lower voltage DC has to be lifted higher, or sometimes changed other ways, boost, buck-boost, flyback, even inverting, all that is possible depending how outside parts are connected. Why XL6009 is More Efficient Than Linear Regulators It is not like old regulator types […]

Filed Under: SMPS and Converters Tagged With: Applications, Converter, DC, Pinout, Working, XL6009

220V AC to 56V DC SMPS Circuit for 48V Battery Charging

Last Updated on May 17, 2026 by Swagatam 2 Comments

In this article we will try to understand how to build a 220V AC to 48 V DC SMPS circuit for charging all types of 48V batteries, using the nice little IC IR2153. However, since 48V battery will require a 56V DC, so we will rather discuss a 220V to 56 V DC battery charger […]

Filed Under: Battery Charger Circuits, SMPS and Converters Tagged With: 220V, 48V, 56V, AC, DC, SMPS

Adjustable 1.2V to100V DC Buck Converter Circuit using LM5164

Last Updated on April 25, 2025 by Swagatam 10 Comments

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

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

USB 5V To 24V DC to DC Buck, Boost Power Regulator Module

Last Updated on August 11, 2026 by Swagatam 2 Comments

This is a USB 5V to 24V Adjustable Buck/Boost Converter Module and it helps us step up or step down an input voltage into a higher or lower voltage, which we can adjust as needed. Now let us go through everything in detail step by step. Inputs – Where We Give Power Now we got […]

Filed Under: Voltage Control and Protection Tagged With: 24v, Boost, DC, Power, Regulator, USB

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