[sdiy] transformer buffering, terminology lost - simple question and live info
Anthony Bisset
abisset at dspaudio.com
Thu Jun 7 13:16:05 CEST 2007
hallo,
i'll be playing at bonobo in sendagaya (near yoyogi station) in tokyo for
a few nights in the coming weeks. if anyone wants to drop in and see this
radical serge rebuild they're welcome to. it'll be 100% live analog
improvisation, probably along the lines of black devil disco club and
delia derbyshire.
had a quick question. i've mounted a bunch of 1 to 1 600ohm or 1000ohm
audio transformers in the hyper?-serge and want to get inverted outputs as
secondaries to the main outputs (jacks and front panel are already setup
for this). Anyway, being slightly handicapped as i am, i didn't realize
that by multing the signal over to the transformer, i would lose the
output on the original non-inverted signal, because of course, the
transformer coil is run to ground. do i need to use op-amps to buffer the
signal or can a simple shunting resister drop the current flow enough that
impedence is close enough for both outputs to work.. I tried resistor's
from 1ohm to 100kohm and didn't have much luck, so i'm wondering do i need
to buffer with a cap, anyway it's getting complexier than i expected.
any suggestions and any interested locals please come out, the place i'm
playing looks like the star wars bar. if you can read symbols you're
welcome to play the machine later in the night.
-a
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