Re: bleeder resistor
avdrummerboy,
The time required to bleed off the capacitor charge depends on the RC time constant. T = RC, Where C is the filter capacitance, R is the resistance, T is the time constant which is the time required for the capacitor voltage to be reduced to approx 37% of its fully charged value. The resistor required to discharge the capacitor to a gvien voltag (V) in a specified time (t) is given by
R = -t/[C ln(V/Vi)]
Where
. Vi is the inital (fully charged) capacitor voltage.
. t is the time at which the voltage must be equal to V
. ln means natural logarithm
Regards,
Kral