Re: gEDA-user: lost newbie

[Steve Meier <smeier@xxxxxxxxxxxxxxxxxxx>]

The other thing that bothers me about this power supply is how does
adjusting the input voltage via a voltage divider affect the "regulated"
output?
I don't think that is going to work at all.

Yep look at the data sheet http://www.fairchildsemi.com/ds/LM/LM7815.pdf

If you want to adjust the output voltage you do it through the 7815's
ground pin. See figure 11 Page 19.

Steve Meier



Steve Meier wrote:
>Ok if we are going to recomend a reading list I would suggest "Power
>Supplies Projects for the Hobbyist and Technician" by David Lines ISBN
>0-7906-1120-1 Master Publishing, Inc
>
>
>I took the liberty to redraw the origional schematic and then a couple
>of modified versions of it. None of which I would use to build a real
>power supply from, but hopefully educationaly usefull.
>
>Steve Meier
>