Variable PS Design

This is the place for any magazine-related discussions that don't fit in any of the column discussion boards below.
User avatar
Posts: 885
Joined: Sun Jan 27, 2002 1:01 am
Location: Dallas Tx

Re: Variable PS Design

Post by Edd » Tue Nov 15, 2005 7:54 pm

Czesc Perwer ?

If you will check out the two referenced power supply circuits that I provided above in my posting , you will find that they both are utilizing supplementary bias sub-zero referencing and will drop down to the zero low level on the supply output.
(Not that I really have ever had to be that close to that low of a voltage level at any power all of my years of using power supplies. Now, as a miniscule bias supply at very minimal current levels…..yes……but that was usually by using a battery with a shunted potentiometer to tap off a variable level.) (That mainly being due to its affording power supply isolation and the absence of noise.)

73's de Edd
[email protected] .........(Interstellar~~~~Warp~~~Speed)
[email protected].........(Firewalled*Spam*Cookies*Crumbs)


Re: Variable PS Design

Post by perwer » Wed Nov 16, 2005 2:21 am

Hi. You know, i find in data sheets in national semiconductors this schematic...
But i must replace LM117 by a transistors and other parts from this schematic...
I don't know how connected it. Please help.

Post Reply

Who is online

Users browsing this forum: No registered users and 37 guests