RadioBanter - View Single Post - Supporting theory that Antennas "Match" to 377 Ohms (Free space)

August 19th 03, 05:20 PM

(Dr. Slick) wrote in message . com...

And your example of the product of RC being in seconds actually
makes sense! After all, it is an RC time constant! The number of
seconds it takes to get to 90% charge or discharge of a series RC
circuit.

Opps! Actually, for one RC time constant, it's about 36.79% of the
initial surge current when charging, or 63.21% of the final charged
voltage at t=infinity (it theoretically never reaches a full charge,
as you obviously know).

The point is that the units of R*C lead to units of seconds, which
is exactly what it should be. There is order to the universe!
Sometimes...

Slick