Hi all!
On 12.05.22 00:00, gene heskett wrote:
On Wednesday, 11 May 2022 17:14:27 EDT Ralph Stirling wrote:
Yes, european color code is brown=V+, blue=gnd, black=output.
With NPN, load is referenced to V+, with PNP, load is referenced to
gnd.
-- Ralph
I suppose in some circles that bleached red could be called brown. But
blue has never been ground on this side of the pond. Which is odd, in
electrical wireing, black is hot, white is neutral/ground, a static
ground is green. Inside a radio, black is ground. Or was in 1947 when I
started fixing them for cigarette money. But this isn't a radio, and I
should remember that.
I could imagine that the colors are due to the usual coding (at least in
Europe) for AC circuits with brown=Phase (hot wire) and blue=Neutral
(cold wire). Signal is then simply what's left. Sometimes they use black
and white for complementary outputs.
Regards,
Philipp
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