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a simple question about OSC

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incol

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I am designing a ring osc, it seems to add an initial voltage to the circuit, but how to realize it in hspice, what is the program, is using .ac
thank you
 

An initial voltage can be added to the circuit by adding a .IC tag in HSPICE to a particular node.
 

You can do this listed in below

.ic v(nt1)=0

or
.nodeset v(nt1)=0

Yibin.
 

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