[sdiy] 723 regulator compensation question
Roy J. Tellason
rtellason at verizon.net
Fri Dec 7 23:05:08 CET 2007
On Friday 07 December 2007 07:14, dragon.servicing at googlemail.com wrote:
> Hi,
> I decided to look at a home made power supply that I built many years
> ago that uses the 723 regulator with a 2n3055 transistor, and rebuilt it.
> I think the design was originally from Practical wireless magazine ?
> after looking at the data sheet I see that the compensation cap is shown
> as 100pf. ( pin 13 to pin 5 )
> but on the veroboard I've used I notice that it is a 100nf cap.
> I just wondered which value was correct ?
> I'm also thinking of using a ten turn pot to replace the 5k voltage
> adjust control to make it easier to set the required output voltage.
> just wondered what everyone thought ?
> regards Peter
You can find a datasheet for the 723 here:
http://www.classiccmp.org/rtellason/by-generic-number.html
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