physical/intuitive understanding of RL/RC time constants?

Oct 11, 2004 22 Replies

Egads!. You've just given away the secret of Spice Transient Analysis. The programmers will be calling for you with torches ablaze. Why is it that if anyone wants to *clearly* explain an algorithm or sequential idea, they'll use "Basic" or a very Basic looking 'Pseudo-code', yet most programmes seem written in "C". It just isn't logical. regards john

================== The cap starts out discharged, so a lot of current flows at first, then less and less and less as the voltage and charge builds up on the cap. Plot it... charging toward 12 volts ... starts at 0, then half way to 12 would be 6, then half way to 12 would be 9, then half way to 12 would be 10.5, then half way to

12 would be..... hey... it might not ever get there!

Time itself is defined by the charging of the capacitor. The real question is why a pendulum etc agrees with the charging. Peter Lawton

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