[sdiy] capacitor ID

Rude 66 r.lekx at chello.nl
Wed Jul 24 22:16:23 CEST 2002


 well, i did all the soldering yesterday. the caps i got were blue, looking
 very different from the tantalums. just a few more things:

 - i believe i have the pins of the lm741 'split' like the normal ic.
where's
 pin 1 on the ic version though? i've used sockets for the ic's. so i should
 just be able to stick it in like a normal ic, right?

 -there's another thing that still confuses me. resistors. even with the
 excellent graphic resistor calculator
 http://www.dannyg.com/javascript/res2/resistor.htm all this goed from a
 resistor having 3 bands and a tolerance band. many i see, however, have
more
 than one. how should that be counted?

 anyway, if things go well, the 100f now has not only normal cv/gate in, but
 it's also scalable, can be switched on/off, and it has a keyboard tracking
 feature for the filter, which can be switched on/off and has a 'scale' pot.
 inside are also 2 trimmers. the soldering itself wasn't too hard, but it's
 dififcult working without any kind of description or schematic. biggest
 problem is seeing if you don't miss anything: for instance i didn't see a
 small diode connected to 2 points on the filter tracking bypass switch.
 luckily i had some laying around..
 anyway, today the lm741 will go in and then.. either 'boom' (i took care to
 watch the caps' polarity), 'nothing' or 'another usable analogue synth!'..

 r./






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