MOTM

Thanks for the dirt on the LEDs.

Next question:  I would like to collect a few Op-Amps to keep around
for DIY fiddling.  Any recommendations for the top 5 candidates to
keep in a well-stocked MOTM experimenters work bench?  A general
purpose Op-Amp to drive LEDs.  An audio preamp.  That kind of thing. 
The TL072?

Thanks,  Greg

All you need is 2 types:

TL072ACP - audio path

LT1013P - DC summers

both available from DigiKey

Paul S.

Check out my parts source page:

http://www.hotrodmotm.com/parts_list.htm

Moe

--- In motm@yahoogroups.com, "Greg Amann" <greg.amann@s...> wrote:

> Thanks for the dirt on the LEDs.
> 
> Next question:  I would like to collect a few Op-Amps to keep around
> for DIY fiddling.  Any recommendations for the top 5 candidates to
> keep in a well-stocked MOTM experimenters work bench?  A general
> purpose Op-Amp to drive LEDs.  An audio preamp.  That kind of thing. 
> The TL072?
> 
> Thanks,  Greg

Hmmm...   I agree with Paul's suggestions, but you asked for five ;)
I have a number of OP-275 that I use for audio -- very fast, low
noise, and high current.  I use the LT1013 for precision voltages,
but they are slow.  I have a bunch of SSM2135 that I use for
single-sided (9V battery audio applications) and you should have a
fast op-amp that can work single sided if you plan on building
stomp-boxes.  However, the op-amp I use the most, is the TL072 --
fine for summing non-critical voltages, inverting signals, creating
high-impedance inputs, driving LED's, and as an output amp for gates,
triggers, LFO's, envelopes, etc.  The fifth op-amp is the unusual
LM3900 "Norton" amplifier used in a number of different applications.
Since through-hole parts are becoming more difficult to find, some of
these might now be obsolete.


On 6/5/05, Greg Amann put forth:

>Thanks for the dirt on the LEDs.
>
>Next question:  I would like to collect a few Op-Amps to keep around
>for DIY fiddling.  Any recommendations for the top 5 candidates to
>keep in a well-stocked MOTM experimenters work bench?  A general
>purpose Op-Amp to drive LEDs.  An audio preamp.  That kind of thing.
>The TL072?
>
>Thanks,  Greg