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Power Supply Circuits

7 Watt LED Driver SMPS Circuit – Current Controlled

Last Updated on January 8, 2024 by Swagatam 27 Comments

72Bwatt2Bled2Bdriver

The presented 7 watt LED driver circuit is an SMPS based non-isolated, transformerless circuit which ensures a safe current controlled output for the attached LED, it is very affordable to build without  involving complex transformer winding. Constant Current and Load Regulation Objective The aim behind the design of the IC TPS92310 (from TEXAS INSTRUMENTS) is […]

Filed Under: Power Supply Circuits Tagged With: Controlled, Current, Driver, LED, SMPS, Watt

1.5V Power Supply Circuit Diagram for Wall Clock

Last Updated on January 17, 2025 by Swagatam 179 Comments

wall2Bclcock2Bsupply

The post presents a simple transformerless 1.5V DC power supply circuit which can be used for powering wall clocks directly from mains, and also keep a stand by back-up cell fully charged for enabling an uninterrupted operation of the clock even during mains failures. The idea was requested by Cheekin Warning: This circuit is not […]

Filed Under: Power Supply Circuits Tagged With: Clock, Power, Supply, Wall

LM317 Variable Switch Mode Power Supply (SMPS)

Last Updated on August 22, 2024 by Swagatam 118 Comments

variable switching power supply using LM317 2

So far in this website we have studied LM317 based linear power supply circuits, here I have explained how an LM317 can be executed as a variable switch mode power or SMPS with zero loss. LM317 as Linear Regulator We all know that an LM317 IC is internally designed to work as a linear voltage […]

Filed Under: Power Supply Circuits Tagged With: LM317, Mode, Power, Supply, Switch, Variable

0-60V LM317HV Variable Power Supply Circuit Diagram

Last Updated on January 17, 2025 by Swagatam 81 Comments

317hv

The high voltage LM317HV series of ICs will allow to go beyond the traditional voltage limits of an LM317 IC and enable controlling supplies that may be as high as 60V. 0-60V Regulation with a Single IC LM317 Therefore now you can build a universal 0-60V regulated power supply circuit loaded with all the essential […]

Filed Under: Power Supply Circuits Tagged With: 60V, LM317HV, Power, Supply, Variable

SCR Shunt Circuit for Protecting LED Drivers

Last Updated on August 20, 2019 by Swagatam 38 Comments

shunt

The post presents an effective method for protecting capacitive LED driver circuits through an SCR shunt regulator circuit and explains how it can prevent filter capacitors from blowing of and LEDs from getting destroyed. The remedy was requested by Mr. Max Payne. Protecting High Watt LEDs Please suggest regarding 3W, 5W LED bulb circuit design fault. […]

Filed Under: Power Supply Circuits Tagged With: Drivers, LED, Protecting, SCR, Shunt

LM324 Variable Power Supply Circuit

Last Updated on July 6, 2019 by Swagatam 206 Comments

power supply

The presented universal power supply circuit can be used just for anything, you can use it as a solar battery charger, bench power supply, mains battery charger circuit, or for any desired application regardless of the voltage and current range, which are extremely flexible and fully adjustable. Main Features: The mains features of this power […]

Filed Under: Power Supply Circuits Tagged With: LM324, Power, Supply, Variable

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