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    high voltage probe (0-30kv)

    Is your application for just DC or do you need compensation for HF (Like a scaled up scope probe) ?  Also, the load resistance of your meter/s must be consistant as this will affect the ratio. Simple DC method 30 1M, 1000V rated resistors ( or whatever you can find for 30KV) To determine the...
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    Determining the frequency of a transient

    Trying to determine the frequency components of overshoot and ringing on a fast rise/fall transient. If I have say a 10nS rise with some "hash" on the crest. Then expanding that portion of the wave can I assume the various full cycle transitions are the actual frequency components in my circuit ?
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    Simulating input bias current

    Is it possible to simulate input bias current using the DC Bias analysis ? I tried but my simulation requires a voltage source. Can I fool the software ? I'm using 5spice. Want to simulate an LM358 with 1M across the + input, no signal in.... I'm new to Spice but not to op amps... Fredrick
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