Thanks a lot, Mike. Did all this just sort of 'materialise' from your
looking at the circuit or do you have some prior familiarisation with
this kind of configuration?
I looked at the circuit and figured it out based on what I know of
RF design. The differential pair looking thing was easy enough to
figure out, though I can't describe or quantize the near FTL right
brained parallel thought processes involved.
I've never seen common base amps used in a meter like this, in
fact, the sniffer and the simple 1 transistor active ( and maybe
one with an OpAmp rather than a transistor) sniffer are the closest
I've seen for relative FS measuurement.
I'd really like to be able to acquire an
intuitive grasp of such circuits by cursory inspection if that can be
done.
It can. BTDT before. It's sometimes called "designer dissapeared
and left me this POS." Also known as "building on the work of
others", "embrace and extend" (MS parlance), and copying.
I received a bad electric shock before I was old enough to
remember, another not long after that that I *do* remember. Rigged
two dry cell batts together with and old telephone speaker and mic
when I was six along with the obligatory wire around a nail e-
magnet and Captain Crunch Microphone (see "electronics for 6 year
olds".) Tore apart radios. Plenty of old junk like door bells (the
single metal bar gong and solenoid) make-break bells (vibrators, I
guess,) and phones to tear apart. Found the 1st electronics book in
the school library in 6th grade. Then the magazine sub started. Don
Lancaster was around back then. At the time, I lived next to a
lighting technician for Haji (later Hybrid Ice. They disbanded and
if rumor has it correct, the old stage manager is bringing them
back together. Haven't seen him in months. He wrote some songs.
Stutters like mad especially if you get him excited, but he says he
can sing. I hope they make lots of money so I can charge them a lot
for custom designs and whatever. Why compete with the Japs?)
Anyway, Neil, the lighting tech, had a physics degree. He turned me
on to algebra to make ohms law more useful and poly-paks to make
parts aquisition easier. He and his wife took me and sometimes mom
to concerts and he and the other techs explained things like
dimmers, how to clamp onto house power at the box, tape loops, and
digital light sequencers (johnson counter / triac crap).
So if you've only been at it for a while don't stress too hard, I
guess. Kids have gone to college not knowing shit about electronics
and probably don't when they get out. I know a tech with a BET that
can't design a 2 resistor divider. Pretty sad.
I suppose experience will help, but there's that right brain thing
that helps. Fear not, I think it can be developed. Supposedly the
bicameral mind can be link enhanced.
Right now, I need a circuit to rectify certain people. I think I'll
call it a cloaking device. Maybe fake my death.
dahdidahdi dahdahdidah Calling all crackers.
HH,
Mike
