This is also done in finance where M is 1000 and MM is million. Really odd!
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On 8/24/2018 7:19 PM, Brad Thompson wrote:
On 8/24/2018 4:25 PM, Dave McGuire wrote:
<snip>
?? I never did understand the point of the 0F13 notation and have never
particular cared for it.? Arbitrarily moving the units into the decimal
position seems like a very random thing to do.
?? But a leading zero makes 0.013F pretty readable, IMO.
?? The real problems come in, as Chuck pointed out, when the industry
does things like "MFD".? Gads am I glad those days are over!
Hello--
Another pitfall from the "good old days" awaits the beginning
restorer or repairer who examines the schematics of certain
older (tubed) radios. Some manufacturers used "M" as a
multiplier of 1,000 in resistor values.
For example, I'm looking at a schematic for a 1930s Grunow
model 1291 receiver in which various resistors sport labels of
"ohms", "M" and "megohms".
Fortunately, a little knowledge of circuit design would tell you
that using a 47M (megohm) plate resistor in an audio-amplifier
stage would be highly unlikely.
73--
Brad? AA1IP
