06-10-2013, 07:58 AM
(This post was last modified: 06-10-2013, 08:03 AM by Radio Fixer.)
I saw the link to those caps but there is no mention of ripple current rating, this def needs to be considered for the reservoir cap. At only 10mm dia I doubt they will have a high rating, size matters ! And if they do have a rating and it sounds too good to be true it is probably at 100kHz or something for inverters. Rating falls a lot by 50 / 100 Hz, typically < to 1/3.
A used rule of thumb for ripple current rating is that it should be at least 2 X the HT current but I would go larger myself and use 105 deg caps for those inside a stuffed can covered with tissue to build them out to the old can diameter.
Is 40mF a smoother or the reservoir? For the first then 47 is no prob, for he later check as suggested the rectifier valve data.
Gary
A used rule of thumb for ripple current rating is that it should be at least 2 X the HT current but I would go larger myself and use 105 deg caps for those inside a stuffed can covered with tissue to build them out to the old can diameter.
Is 40mF a smoother or the reservoir? For the first then 47 is no prob, for he later check as suggested the rectifier valve data.
Gary
