[sdiy] LFO

[xmurz at gmx.de]

28.03.02 01:11:30, harry <harrybissell at prodigy.net> wrote:

>Hi Hans....
>
>although I am known to consider solderless breadboards in a class with
>BBDs....
>
>in the case of an LFO I doubt there is a problem with the breadboard. For
>
>reasonably slow circuits they will work OK... capacitance should not be
>an
>issue.
>
>Do you have any test equipment (scope, meter, etc...)?

Yes, I have both a scope and a meter.

>
>Stick with one design to start with... then hunt (and again) for every
>connection.
>Make a photocopy of the schematic and trace every connection you make and
>
>use a hi-lighter (or a crayon ;^)  to mark the copy. Double check all
>polarized
>components with extra care.

I will take that advice!

>
>Apply power and put a fingertip on all the components... if you say ouch
>(hot) you
>have a problem there.

That happened with the TL082 one. I instantly switched of the PSU
(as there must have been a short circuit... don't want to waste those TL082's...

>
>contact me on or off list I'd be glad to help you out. Don't get
>discouraged.  I just spent two days debugging some poorly considered
>wiring in my latest project...
>two boards with 90 IC's....

Thanks!


I think it actually has to do with the pins of the TL082.. must have messed up something with that...
I will have another go at it this evening (in about 3 hours) and will post the result.

Regards,
   Hans