On Sun, 05 Sep 2010 10:08:01 -0700, John Larkin wrote:

On Sun, 05 Sep 2010 08:57:03 -0700, Fred Abse
wrote:

On Sat, 04 Sep 2010 07:56:51 +0100, Eeyore wrote:

Do please especially explain the relevance of the letter Q to indicate a
transistor or U for an IC.

No sillier than "L" for inductance, or "Z" for impedance, or "Y" for
admittance, or "B" for susceptance, or "G" for conductance.


I've actually seen schematics that used CHO for inductor, RLY for
relay, LED for LED, POT or RV for a variable resistor, BR for a
rectifier, CON for a connector. Audio, of course. Schematics that use
such designators are invariably amateur crap circuits in their own
right. They generally use the dreadful "4K7" thing too.

Hey John, I get resistors marked 4k7 or 6R8. What's so bad about
that? Not that I'd try to convince you otherwise, I got used to it
about the same time a workplace talked me out of zigzag resistors
and into box ones like the industry mags or something did. I just
went with the flow, no point arguing.

Though Farnell (your Newark too?) don't know the difference between
upper and lower case multipliers, and MH might actually be uH or mH.

Grant.