Anti-nuisance lawsuit warning: The purpose of these notes is to remind me, Zoegond, of stuff or to help me work stuff out. They may contain mistakes.

Quick

  • ($a, $b....) = unpack("A2A7...", $packed)
  • push( array, list )

Tuesday, January 11, 2011

Circuit analysis with diodes

(Non-PDF notes on http://www.ittc.ku.edu/~jstiles/312/handouts/The%20Ideal%20Diode%20Circuit%20Analysis%20Guide.pdf)

1. Guess the bias of each diode, ie assume forward or reverse bias (FB/RB)
2. 'Enforce' the assumptions by replacing
(a) FB diodes with a short circuit (0 ohm link) so that there is zero voltage drop across them
(b) RB diodes with an open circuit (break) so that there is zero current through them.
3. Determine the circuit values in the usual way, and use them to check the assumptions you made:
(a) A short circuit (FB) should have positive current flowing through it
(b) An open circuit (RB) should have negative voltage across its two ends.
NB to check for these conditions, not for the 'zero' conditions in point 2.
4. Any assumptions that aren't met should be reversed, and the process gone through again.

Then, because real diodes aren't ideal diodes and do have a voltage drop across them, adjust the analysis to take the drops into account.

Followers

Blog Archive