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In Reply to: RE: Are big capacitors required after a B+ regulator? posted by jorisdallaire on August 20, 2014 at 12:06:27
SPICE is an excellent way to look at output Z over frequency, assuming all the models are available. I've SPICED some of our very low noise regulators where I work, and the results closely agree with measurements.
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Available free online from Linear Technology Corp. You'll need to invest some time in learning the program, but it's worth the effort. Once the circuit is built, I analyze output Z by attaching a sine generator to the output through a resistor. Attenuation across the resistor is inversely proportional to output Z.
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Buy Chinese. Bury freedom.
Edits: 08/21/14
I am familiar with LTSpice, but still at hobbyist level. I appreciate those analysis tricks.
Regards,
Joris
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