Article Created on: "Sept 14, 2011"
Updated on: "Sept 15, 2011"

Here is a Simple Voltage and Current Regulated Power Supply using the LM723 IC.

With the Values Shown, It is Adjustable from 3 to 30 Volts and 0 to 3 Amps.

This circuit does NOT have Output SHORT CIRCUIT Protection,
So a 3 Amp Fuse on the Output would be a Good Idea.

Ideally you will put an Amp-Meter, Where is says "M" on the PCB.
If you Don't, you Must put a Wire Jumper across there.

The Current and Voltage Controls should be Regular Pots,
Mounted on your case For Ease of Adjustment.

The I-Trim should be a Trimpot and Adjusted so that When the Current Control is at Minimum,
The Output current is Actually at Minimum.
You will need a Suitable Load to do this. (Possibly a 12 Volt, Car Park-Light, Light Bulb)

Sorry, I can only supply a Limited Number of parts for this Project.
I Do Not stock the LM723 or either of those Darlington Transistors.
But I Can Supply the Other Parts and the PCB.




"Back to My HOME Page"






  LM723 Schematic.

 The PCB Artwork.

 Picture of Assembled PCB.


All Imformation in this Article is "Copyright protected".

 Chemelec 
 *Copyright © 2011*