[OT] [sdiy] IN your mind, what is ....

[Scott Gravenhorst]

Ingo Debus <debus at cityweb.de> wrote:
>Am Donnerstag, 05.02.04 um 01:09 Uhr schrieb Shokwave:
>
>>
>>> How about
>>>
>>> c) Use a 10k trimmer, start with 10k and slowly move down until you 
>>> either
>>> reach 1k or smoke emits.
>>
>> Hmmm...now I need two handfulls of trimmers...maybe I should make 'em 
>> ALL
>> trimmers, just to be safe.
>>
>
>Ha! Finally I'm able to join two branches of this thread again.
>
>The equivalent in analog circuit design to a GOTO instruction is a 
>trimpot!!
>
>Too lazy or not able to calculate the correct resistor value and the 
>required tolerance? Just slab in a trimpot. I'm sure many trimpots 
>could be avoided.

For me, that's what a SBB is for, you calculate resistor values to the
best of your ability and then try them.  I often find myself changing
some of the values at that stage.  Sometimes I go back to the math and
realize I made a mistake, other times it remains a mystery.  But I do try
to avoid trimmers except where they are really needed such as offset nulling.

>BTW, the equivalent in digital circuit design to a trimpot/GOTO is a 
>monoflop... ;-)
>
>Ingo
>

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-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
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