Reply To: testing condensors microfarods

[JOSEPH BRINCAT]

Ron said… “I don’t know the rating of old condensers.”

Please elaborate, what don’t you understand?   As Frank said the old style condensers were at best +/- 20%  of the nominal rating.  Pretty sloppy, I’d say, but apparently not that big a deal in practical application.  If you look at reference charts for recommended capacitors you will notice that, with few exceptions they are around  .22 mf . If you apply the +/- 20% that gives you a pretty broad range to work within. The newer “high tech” caps like the mylar foil caps are made to a higher standard, buy still +/- 5% of  nominal rating.

Hope that helps…

Joe B