Ashlock,William wrote:
There are two great workbooks on Psice simulations by Roy W. Goody. The
Title for both is 'MicroSim Pspice for Windows', copyright date 1998. Volume
II is the one that covers oscillators. Check this tile on the various Web
sites for used books and you might find a real bargain.
James Moritz wrote:
Try connecting a pulsed voltage source (VPULSE) in series with the
tank circuit - set it to generate a pulse width of, say, 1/2 a cycle
of the expected oscillator frequency, starting at t=0.
[...]
Bill and Jim,
many thanks for your answers, for the tips and the pointer to the book.
This evening I will try the example oscillator that Bill has sent in a
separate message and the insertion of a VPULSE
as suggested by Jim. Yes, I have noticed that the value for the
"Maximum step" in the simulation usually
needs to be shortened from what PSpice suggests you.
PSpice seems to be a powerful tool, albeit with some quirks, i.e. it
does not recognize (my version at least) the capital
letter M as a prefix for Mega... I had inserted a resistor of 1M, only
to have a few femtovolt across it.
When I changed it to 1e6, everything was ok. Probably it interpreted the
1M as one milliohm... may be they need a refresh
on the MKS system...
73 Alberto I2PHD
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