Posts Tagged ‘dc variable power supply’

Low Noise Variable Output 1.25V to 12Vdc

This circuit is DC converter low voltage , 12V from be 1.25V to 10Vdc by can give current topmost get about 1.5A. You should use IC number LM317K because have electric many power more the number LM317T. By should hold heat sink. That have large-sized with. The R4 use for fine decorate voltage output. The C1,C3 , and , C2 , for decrease all noise well. The detail is other , see in the circuit.
circuit source by joe (aircraftdesigner)

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Laboratory Power Supply Variable Voltage 0-50V 1A

Laboratory Power Supply – Variable voltage from 0V to 50V and variable current from 0A to 1A
Reverse engineered circuit diagram of an expensive commercial variable lab power supply. This unit is designed around an ordinary op-amp and easy to obtain parts. Although the unit uses a single transformer with two output windings the circuit works equally well using a big transformer and a little transformer.

Read More Source:http://members.shaw.ca/novotill/LabSupply50V1A/index.htm
Thank you.

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1.2V – 32 V / 5A Power Supply by LM338

This is a LM338 based power supply (with Short Circuit Protection) which is not complicated and easy to build. I am using the supply for a long time, have no problem yet. Only current adjust is missing but I overcome this situation by using an LCD panel ampermeter. There is no PCB for the circuit. I took a 3×16 copper plate and strip the unused areas by a knife. If you want you can use analog meters instead of LCD panels.

Complete Single-Unit 0 – 30V / 0 – 2A Regulated Power Supply with Digital Voltmeter / Ammeter (Asse

Read More Source:

http://www.circuit-projects.com/index2.php?option=com_content&

task=view&id=92&pop=1&page=0&Itemid=34

http://electronics-diy.com/electronic_schematic.php?id=590

Thank you.

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