Very likely a UK/US thing. pF (puff) has always been in common usage here from the very early days so mmF would not have been common; nano, however, took some time to gain traction, probably as late as the 1970s. We would have asked for a thousand puff capacitor rather than 1n. It seemed to have been pushed by the capacitor manufacturers and their markings, probably to save space.
73
Jeff G8HUL
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-----Original Message-----
From:
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[email protected]> On Behalf Of Tom Lee
Sent: 01 September 2022 09:42
To:
[email protected]Subject: Re: [Test Equipment Design & Construction] Cal Lab Magazine - International Journal of Metrology
Hi, Jeff,
It is quite probably an example of differing usage in the US v the UK, with the US simply not willing to pay for a mu until recently. :)? And "mickey-mikes" certainly sounds American, given its probable Disney-inspired etymology, so it doesn't surprise me that you've never heard it. "Two peoples, divided by a common language" ... (a great line, even if Shaw apparetnly didn't actually say it).
-- Cheers,
Tom
--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
350 Jane Stanford Way
Stanford University
Stanford, CA 94305-4070
On 9/1/2022 01:08, G8HUL wrote:
Not so much a mistake as merely a holdover from the days when mF was
in fact the conventional abbreviation for microfarad,
I have handbooks dating back to 1925 and they use ? as the abbreviation for 10-3, but some still prefer Jars for capacitance! I is possible that it is a US v UK thing, or just widespread incorrect usage.
Never heard any reference to the expression "mickey-mike".
73
Jeff G8HUL
