On Wed, 4 Feb 1998, Trevor Boicey wrote:
> > voltage stabilizer for the 0-1 volt range? (obviously one has been made,
> > if the onboard computer's got one-- but can the average mortal buy it?)
>
> Well, you could trivially build one, but I recommend buying
> that oscilloscope you always wanted and breaking it in here!
BUY? Oh, come on! I'd build one! ...but I gave away the last CRT (genuie
cathode ray tube- not one of those newfangled TV things!)
Darn.
Hmm... a sound-card equipped computer can almost be used as a 'scope...
<ponder>
nah.
> (in other words, analog meters actually use power from the circuit
> to move the needle, and the signal produced from the oxygen sensor
> is too weak to move the needle. Digital meters draw almost no
> current from the circuit they measure)
Ugh. I think you're right. My cheap-o meter (the REAL reason why I
bought an analog) only goes down to 5V DC and 10V AC. That means I have
1/5 of the scale to watch for 1 volt.
It can be done but you gotta squint! Mostly I use the meter for
continuity tests anyway.
When I'm rich and famous I'll buy a Fluke or similar beast. For now it's
the Radio Shack Special. :-(
-Malcolm
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