[sdiy] basic electronics question - voltage divider

[Aaron Lanterman]

On Wed, 22 Feb 2006, Scott Gravenhorst wrote:

> If you will be powering some circuit with +/-7V, then you would be far
> better off with two additional regulators to reduce the 15 volts to 7.

That brings up a question - I sometimes see people using op-amp buffers 
for voltage dividers to create various supply voltages. Buchla does get 
to +/- 6v needed for the CA3160's in his timbre generator in the 259.

Oh, I'm still evil, analyzing the equivalent circuit in the Music Easel 
is Problem 1 on Homework #3. ;)

Anyway... I'm not sure when one would want to use an op amp for that sort 
of thing vs. using a dedicated voltage regulator.

- Aaron

-----------------------------------------------------------------------------

Dr. Aaron Lanterman, Asst. Prof.       Voice:  404-385-2548
School of Electrical and Comp. Eng.    Fax:    404-894-8363
Georgia Institute of Technology        E-mail: lanterma at ece.gatech.edu
Mail Code 0250                         Web:    users.ece.gatech.edu/~lanterma
Atlanta, GA 30332                      Office: GCATT 334B