Switching Power Supply | Electronic Project Circuits

Posts Tagged ‘Switching power supply’

Old power supply computer by TL494

An elder brother of me works about repair a computer. Once meet a problem power supply Switching , of a computer s lose. It is old circuit. I then help to seek give. Get this circuit think may disagree. But enough use can replace. if friends meet same this problem try out please. It can give voltage output 5V , +12V,-12V. Use the integrated circuit TL494 be pillar equipment seek good easy.
By apply to voltage 110V and 220V choose done to a turn SW1. The detail is other a friend sees in the circuit be lucky sir.

Be the first to comment - What do you think? Posted by admin - August 1, 2008 at 12:31 pm

Categories: Switching power supply Tags: power supply computer, Switching power supply, tl494 power supply circuit

A Compact 36-72V DC Input, 3.3V-10A Output Power Supply

The output of this power supply is an isolated 3.3V/10A output, produced from an input is 36-72V DC. Airflow is required at higher ambient temperatures to get the full rated power.

The topology used is a single transistor forward, with a reset winding on the transformer to reset the core. The maximum duty cycle is less than 50%. The design uses the MAX5052A PWM controller.

Read more original source: http://www.maxim-ic.com/appnotes.cfm/an_pk/2400

Be the first to comment - What do you think? Posted by admin - June 13, 2008 at 9:57 am

Categories: Power supply, Switching power supply Tags: 3.3V power supply, dc converter step down voltage, Switching power supply

LM2673 -5V 3A Switching Voltage Regulator

This is the DC switching regultor Voltage 5V at current 3A. It is make for digital circuit.
The important part of the circuit is LM2673, it is 3A Step-Down Voltage Regulator with Adjustable Current Limit.
The LM2673 is Simple and easy to design with using off-the-shelf external components.

please see circuit diagram and read more source.
http://www.national.com/pf/LM/LM2673.html

Related Links
More circuit about dc converter step down voltage
More 5V power supply Circuit
5V breadboard mini PSU with 7805
Simple 5V 1A Switching regulator by IC LM2575-5.0
5V 5A switching regulator for digital by LM2678
Regulator 5VDC 200mA by 2N3055 , TL431
More Switching power supply Circuit
More circuit about IC LM2673