But the lousy old LM324 antique quad opamp is available at RadioShack with some other old antiques.A better solution to both problems is to use a better op amp.
Selling dope? Swine flu? LM324?RadioShack got kicked out of Canada. Guess why?
How can you do that, unless you generate your ramps digitally with a D/A (direct digital synthesis?), or make the whole analog loop a PLL, locked to an external, digitally generated reference?One of the long term goals is to get the intigrator RC values out of the loop. If this does become an instrumentation type of equipment they RC values will be all over the map.
I'll let ya know how it goes.
by Jake Hertz
by Aaron Carman
by Don Wilcher
by Jake Hertz