On Fri, 5 Dec 2008 22:11:43 -0500, "Tom Del Rosso"
wrote:


"John Larkin" wrote in
message

IC, CON, HDR, TR, VR, CHO, RN, RV, RLY, SW, LED and such are all
amateur inventions.

CR is still common. Is that supposed to be "controlled rectifier" (like in
SCR)?

It was "crystal rectifier", and D was "dynamotor". You don't see many
surface-mount dynamotors [1] any more, so lots of people have swiped D
for diodes.

These designators are the classic military ones.


Speaking of which, what do you use for SCR's and triacs?

Q.

John

[1] a dynamotor is a rotating dc-dc converter.