[sdiy] capacitor ID

[Marc Jordan]

More resitor color bands means more accuracy:

http://samengstrom.com/elec/resistor/5band.html

http://www.epanorama.net/documents/markings/resistor_colorcodes.html

-----Original Message-----
From: Rude 66 [mailto:r.lekx at chello.nl]
Sent: Wednesday, July 24, 2002 4:42 AM
To: harry
Cc: Tony Clark; Synth-DIY
Subject: Re: [sdiy] capacitor ID


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./