[sdiy] unconventional uses for parts

[anthony]

> Heh heh, "misuse", I love it.  4069UB et al are fine examples and the
> data sheets include ways to "misuse" them, 4069UB has, for example, a
> simple schematic for a high impedance analog amplifier (which is what
> the friggin thing really is anyway).  There's the René Schmitz 4069UB
> sawtooth VCO, a _fine_ example of using this normally logic device for
> analog purposes.

Oh I meant besides the cool misuses. I guess I was assuming everyone
would know that I was talking about those really crappy chips. Like video
amps...

I like René's 4069UB VCO. It's great for LFOs.

I already put my hex inverters to good use. Especially the nicely deprecated
4009. But if you need a 4069UB and all you have is a 4069B couldn't you
just make a 4007 do it instead? I do recall reading about nonlinearities
using CMOS stuff for analog. Even the 4007.

> I've wondered whatever happened to those simple video amplifier chips
> and have wanted to ask here if anyone has ever made any synth modules
> with them.   Anyone?

Yeah! I do like it that there are good uses for CA3046's and CA3083's. Since
I have a bunch of those...

Oh hey cool I just realised that I dumped about 20 JRC4558's in my 1458 bin 
a
long time ago.

Hooray.

> What is this?:
> "Jetzt heisse ich Der Funkenaasfresser! (Im Aas sielen...)"
>
> Babelfish wouldn't do much with it and my German (Hoch Deutsch) which
> used to be fluent 25 years ago now sucks rocks.
>
>
>
>
> "anthony" <aankrom at bluemarble.net> wrote:
>>I'm sure like me, you all scavange parts from electronics
>>junk. Sometimes all you end up with are duds, and maybe
>>you think hey I wonder if I could use this FM IF chip thingy
>>in a synth somehow? I mean people use MC1495's all the time.
>>I keep looking at data sheets for things like "differential video amps"
>>(hey it has an inverted output too...) and what-not. Like I have
>>an MC3340 and I think I can use it for a VCA pretty well.
>>CV leaks through a lot, but it would work in /something/ right?
>>I suppose there is a point of diminishing returns where the
>>time spent figuring out uses for junk that really is useless
>>would be better spent working to buy decent parts or gas
>>for a road-trip to get more junk (I like that idea better...).
>>
>>So my point! Does anyone have a few crazy uses for parts
>>we all thought were junk?
>>
>>
>>Jetzt heisse ich Der Funkenaasfresser! (Im Aas sielen...)
>>
>
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