In message Bob Barr wrote: > I think you've slipped a decimal place (actually three of them). > > A capacicitance of 600 microfarads is 0.6 millifarads, 0.0006 F. D'oh! Misread the label on the capacitors. They're 120,000uF, or 120 millifarads each and I've got five wired in parallel. Total is 600,000uF or 0.6 Farads. > I hope you don't really need 0.6 F to get the unit to work. Otherwise, > you're going to need a lot more capacitors. No, 600,000uF is about right. 60 watt-seconds at 18V, IIRC. Later. -- Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB, philpem@philpem.me.uk | ViewFinder, 10BaseT Ethernet, 2-slice, http://www.philpem.me.uk/ | 48xCD, ARCINv6c IDE, SCSI ... If flies couldn't fly, would they be called walks? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist