uuF was used to spec cap values in tube equipment.
The introduction of semiconductors forced a conversion to use the 'pico' prefix. Same with hertz. Tube gear measured frequency in cycles per second. The transistor changed all of that. Today, the use of surface mount parts has caused the need for 'nano.' __________________________________ Do you Yahoo!? Meet the all-new My Yahoo! - Try it today! http://my.yahoo.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
How in the world did a change to solid state affect a naming convention? 1
Hz = 1 cps, regardless of the circuit devices. 1 uuf ("micro micro farad") = 1 pf, regardless of the devices used in the circuit. I am baffled by this notion. Can you provide more evidence? 73 de Brian W3BW -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Steve Jackson Sent: Friday, December 17, 2004 07:22 To: [hidden email] Subject: [Elecraft] units of measurement, explained uuF was used to spec cap values in tube equipment. The introduction of semiconductors forced a conversion to use the 'pico' prefix. Same with hertz. Tube gear measured frequency in cycles per second. The transistor changed all of that. Today, the use of surface mount parts has caused the need for 'nano.' __________________________________ Do you Yahoo!? Meet the all-new My Yahoo! - Try it today! http://my.yahoo.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
At 08:08 AM 12/17/2004, Brian Wruble wrote...
>How in the world did a change to solid state affect a naming convention? 1 >Hz = 1 cps, regardless of the circuit devices. 1 uuf ("micro micro farad") >= 1 pf, regardless of the devices used in the circuit. I am baffled by this >notion. Can you provide more evidence? 73 de Brian W3BW Post hoc, ergo propter hoc. It's an error in logic, same as concluding that your alarm clock causes the sun to rise. That is of course incorrect, since it actually causes the horizon to set. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
In reply to this post by Steve Jackson-5
At 07:22 AM 12/17/2004, Steve Jackson wrote:
>Today, the use of surface mount parts has caused the >need for 'nano.' Not to mention the need for an increase in cursing at the workbench. :-) Pete NV4V _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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