Adding Large Power Supply CapacitorsI just saw this Walt Jung note on another forum about why adding huge power supply capacitors can be a bad idea. Energy Storage BankYes, Tony did ask me about posting that article, which covers a lot of things discussed here. I thank him for the courtesy of requesting permission to post the article, which was: "Build An Energy Storage Bank, Walter G. Jung, Audio, August 1980". While it would certainly fit into the context of this DIYAudio thread, I really can't recommend it any longer, and so I have declined the request to make it unconditionally available. As noted within, it isn't a beginner project.
Among the reasons for this is the fact that there are subtle downsides to using such a filter bank, which many might not fully appreciate. The (very) high current pulses in the caps generate RFI, which can be a problem, even when the system is carefully constructed and all of the appropriate soft-start issues are fully addressed. As a DIY add on project, this point is particularly cogent, since the caps must be outside-the-box. Also, the added wiring, connectors, etc. will tend to negate part of the effectiveness of the ultra-low Z of the bank as seen right at the terminals. By contrast, look at the Bear Labs internally mounted, buss-bar strapped filter caps:
http://bearlabsusa.com/NEXT/SYMPHPS.jpgHaving said all this, I don't wish to be seen as preventing information to be shared. If anyone is in dire need of my Audio article, simply email me, via DIYAudio or my website contact page.
__________________
Walt Jung
Website blog:
www.waltsblog.waltjung.org
