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Homework Help: Need help evaluating circuit

  1. Jul 12, 2010 #1
    1. For a mini-assignment at school, we were asked to find a circuit using transistors and capacitors and build it, then analyse the differences when a variable is changed. The circuit me and my partner chose is as follows:
    We got our experimental values, but had a lot problems calculating them theoretically, because the branches combine and such, so we weren't really sure how to approach it.

    2. The only equation involved would probably be Ohm's Law. It seems pretty basic, but we just can't seem to get it.

    3. As I stated above, we tried all we could but we just couldn't find a way to approach it as to get all of the different values.

    Any and all help is appreciated.
  2. jcsd
  3. Jul 12, 2010 #2


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    Staff: Mentor

    Where is this circuit from? It looks like it's trying to be a multivibrator, but there is no means for starting the oscillation. What were your experimental results? Did you have an extra mechanism like a switch (not shown) to start up the oscillations?
  4. Jul 15, 2010 #3


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    Look for astable multivibrator in your tesxtbook.
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