Hi all,
Under what circumstances would you use a current source in a spice simulation as opposed to a voltage source?
thanks.
Current Sources
Mar 02, 2016
7 Replies
When I need a current source.
Would you like to ask your question in a way that gets a sensible answer? I can only guess what's going on in your head that you don't know the answer already.
Some, but not all, reasons to use a current source:
1: You want a current that's independent of the voltage -- 0V or 100, you need that current.2: You're modeling a sensor or a load or some other physical process that tends to be constant current.
3: Part of your circuit will be a current source of some sort but you don't want to simulate that part -- so jam in a current source and be done.
Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
Google: 'long-tailed pair' perhaps?
A controlled current source and a cap makes a nice integrator.
John Larkin Highland Technology, Inc
lunatic fringe electronics
Chris seems to ask some broad question, and then go away. George H.
Homework question?
news:nb7rn2$n10$ snipped-for-privacy@dont-email.me...
"The magnet is held to prevent it from rotating, while the disc is spun on its axis. The result is that the galvanometer registers a direct current. The apparatus therefore acts as a generator, variously called the Faraday generator, the Faraday disc, or the homopolar (or unipolar) generator." See:
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Such generator has a big current but very low voltage. S*
But it's hardly a current source.
John Larkin Highland Technology, Inc
lunatic fringe electronics
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