Dual +12V/-12V @ 400mA Regulated Linear Power Supply with AC input
Power supply

Dual +12V/-12V @ 400mA Regulated Linear Power Supply with AC input

The project presented here is a dual output linear power supply. This power supply provides low ripple low noise DC regulated output. It is a very useful tool to power Audio, Video, OPAMP-based circuits, and projects. The circuit provides regulated +/-12V DC output @ 400mA + 400mA. The...

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12W Dimmer with Soft Start for 12V LEDs
Led

12W Dimmer with Soft Start for 12V LEDs

The circuit presented here is a LED dimmer with a soft-start function. The board can drive a LED up to 12W and the circuit can manage a load up to 1A continuous with 12Vsupply. The circuit is built using SG3525 PWM IC and the IRFR120 MOSFET, SG3525 generates the PWM, and IRFR120 MOSFET...

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12V SLA Lead Acid Battery Charger Using BQ24450
Power

12V SLA Lead Acid Battery Charger Using BQ24450

This project has been developed to charge SLA (Lead Acid Batteries). It helps to charge 12V Lead-acid battery up to 12Ah in capacity. The specific current output is possible by altering the current sense resistor.  The BQ24450 chip contains all the necessary circuitry to optimally...

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Building an extremely high powered 1-12V lab power supply on the cheap
Power supply

Building an extremely high powered 1-12V lab power supply on the cheap

Matthew Millman has published a new project: For a number of years now I’ve had a couple of high powered switching power supply units made by Power-One. They’re typically found in I.T. equipment and provide a single output rail of either 12 V or 48 V with a very high current...

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Create +/-12V Split Rail From A 5V Bias
Power supply

Create +/-12V Split Rail From A 5V Bias

With digital semiconductor technology driving system power supplies to lower voltages for higher performance and lower system power, sensitive analog sensor circuits face a growing problem. Much of the inherent noise created in the early stages of an analog sensor signal path is...

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Constant-on-time buck-boost regulator converts a positive input to a negative output
Power supply

Constant-on-time buck-boost regulator converts a positive input to a negative output

This is a LM5010 buck-boost regulator able to convert a positive input ranging from 10-50Vdc to -12V output. by Robert Bell @ www.edn.com Buck regulators find wide application as step-down regulators for converting large positive input voltages into a smaller positive output voltages....

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USB To 12V Boost Converter
PowerUSB

USB To 12V Boost Converter

This project provides 12V output from any USB power source, like PC USB port, USB adapter or power banks. LM2577ADJ boost converter IC is the heart of the project. The IC can handle load up to 800mA, it’s advisable to use only 200mA load on output to be on the safe side. The LM2577...

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4.260
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Open source 12V powerbank
Power

Open source 12V powerbank

A custom 12V powerbank for Cube i7 Stylus from Muxtronics: Why would anyone even try to build a power bank – i.e. an external battery for charging mobile devices – these days? These things are commodity, it’s impossible to compete. Right? Well, that is until you find out that...

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