[sdiy] tubes, MOVs, etc.

[harrybissell]

There are LOTS of these chips (maxim, analog devices etc...) Most are
good for only 3.3 to 5V supply  (gdam cellphones!) but some were good
for +/-5 or 15VDC...and i found one for +/-15V (analog devices).

Lots of clever uses in EDN Design Ideas

H^) harry

"Cornutt, David K" wrote:

> I saw something in the recent Mouser catalog that
> looks like it could be fun: a programmable resistor.
> Essentially it's a bunch of resistors in series on
> a chip, with a tap selector that is moved back and
> forth by pulsing increment and decrement inputs.
> The current versions are only availabe with (at most)
> 100 taps, so quantizing would be a problem for a
> lot of things, but future version might have more
> resolution than that.
>