[sdiy] Voltage regs + diode drops.

[John Luciani]

On Sat, Feb 21, 2009 at 10:31 AM, Dave Kendall <davekendall at ntlworld.com> wrote:
> Hi all.
>
> Another one I can't find a good answer to....
>
> Is there any good reason not to use diodes in series after the output
> terminal of a positive voltage regulator to get odd voltages, eg. 2 x 1N4001
> after a LM7809 to get just below +8V?

Your load regulation will be in the 5% range if you use a Schottky. Why not use
an LM317 + two resistors? It is the same number of parts and you get
much better regulation.

(* jcl *)

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