My catalog has a "Allowable ripple current vs. Ambient temperature" chart
for the
GQ series cap.
Temperature +45 +60 +70 +85 +105
Coeffecient 2.47 2.37 2.17 1.67 1.00
So at 85 degrees the maximum allowable ripple current for the GQ would
1.67*1.19= 1.99A. That is more than that of the LQ or LK at 85 degrees.
So these caps must not be so bad after all for only 2.25 each.
I did not realize how much discussion my first post would start. HI HI
HI HI This is a 94 catalog.
I'm not saying a 105 degree cap is always better than 85 degree one.
But in this case it is.
What is the actual RMS ripple current? According to a book I have it
is 1.41 of dc output for a capacitive input filter, fullwave rectifier
with an rectifier effeciency of 100 percent.
For a 1 amp plate current power supply the cheap ALL Electronics
capacitors should work just fine especially at 85 degrees c.
73
Bill wa4lav
William L. Fuqua III P.E. E-mail WLFUQU00@POP.UKY.EDU Phone (606) 257-4155
Department of Physics and Astronomy CP-177 Chem. Phys. Bldg.
University of Kentucky , Lexington, Ky 40506-0055
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