Welcome to my lack of understanding and confusion. The frequency correction factor for ripple current in the Digi-Key catalog is shown for several capacitance ranges and for frequencies of 60, 120, 1K, 10K, and 100K Hz. As an example for one row in a table:
6.3-100 W.V.(V DC), 390-100 microF...
Hi Scotty,
I went to Digikey.com and found some ripple information at the following url:
http://pdfcatalog.digikey.com/T091/SectF.pdf
The values are not exactly as shown in the hard copy catalog. At the url, I found a figure of 0.7 for example listed in one location as a correction factor...
Thank you all so much for your help to improve and confirm my experience with maintaining electrolytic capacitors. I am amazed at the reliable manufacturters' ability to reduce the size of electros and still maintain the quality of performance. I generally tend to replace all the electros once...
Hi fellows,
Thank you for your replies.
From my experience and your feedback, the consensus is to replace the power supply electrolytics. I will not be using SMD. Equivalent size is a problem since electros these days are smaller. I have rebuilt the large can lug type caps by removing the...
Thanks Keith for your feedback.
The performance deterioration comes from fluctuating volume from the speakers, sometimes no sound at all, and background hum. It is very likely that the hum comes from deteriorating power supply electrolytics. The fluctuating volume may be due to dirty pots, or...
I am rebuilding an AKAI GX-365 (vintage 1970) reel-to-reel tape recorder because performance has deteriorated. I am testing the electrolytic capacitors to determine if they should be replaced. So far, those I have tested using a Heathkit Capacitor Checker Model IT-28 show the following:
-...
