How can you make your own caps? Aren't they huge??? -----Original Message----- From: "Peter" Sent: 2/20/2006 12:27:11 PM To: "Microcontroller discussion list - Public." Cc: Subject: Re: [EE] Metric units On Sun, 19 Feb 2006, Spehro Pefhany wrote: >> But what is a 'cm' ? There used to be schematics with 'cm' units on >> caps. What is a 'cm' ? > > It *Italian*? No, no. You would have caps in a radio, say tuning cap, of 1000cm. I suspect it is close to the pF. One theory I have is that it would be the equivalent plate capacitor with 1mm separation in air (or vacuum), and 1cm^2 which is about 0.82pF. Come to think of it, this makes sense. Once upon a time real men made their own capacitors and coils so this would have been be a very practical measure for everyday use. Peter -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist