[time-nuts] HP 3586B Power Supply Failures
albertson.chris at gmail.com
Thu Mar 22 07:21:42 UTC 2012
On Wed, Mar 21, 2012 at 9:55 PM, Perry Sandeen <sandeenpa at yahoo.com> wrote:
> One, can I safely double the capacitance of the filter capacitors? (I plan on using the 105C 10K hour high reliability Nichicon or Panasonic units.)
A possible problem is "in rush current". When you first turn on the
power a non-charged filter cap looks like a dead short. A larger cap
will look like a short for a longer time. As long as there is
something that limits the current you may be OK. That might even be
the resistance is a transformer. Modern diode rectifier are pretty
good and will take a large inrush current.
doubling is really not a huge increase in size. Use quality parts,
105C and maybe 50% more volts than the peak they will see and low ESR.
Redondo Beach, California
More information about the time-nuts