Pin numbering, viewed from bottom or top?

flysig · 31st May 2009, 09:42 PM

Are the pin numbers for tubes as looked at from the bottom or top?

leadbelly · 31st May 2009, 09:46 PM

flysig · 1st June 2009, 01:04 AM

Thanks, Leadbelly. It would have been less than good to have assumed that the pinout was from the top, like the integrated circuits are!

Sal Brisindi · 1st June 2009, 12:21 PM

Bottom, you count the pins clockwise.

Sal

richwalters · 1st June 2009, 09:22 PM

Many IO types have numbers on the tags. Always read from underneath.

31st May 2009, 09:42 PM	#1
flysig diyAudio Member Join Date: Apr 2009	Pin numbering, viewed from bottom or top? Are the pin numbers for tubes as looked at from the bottom or top?

31st May 2009, 09:46 PM	#2
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	http://www.dogstar.dantimax.dk/tubestuf/pinout.htm __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

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1st June 2009, 01:04 AM	#3
flysig diyAudio Member Join Date: Apr 2009	Thanks, Leadbelly. It would have been less than good to have assumed that the pinout was from the top, like the integrated circuits are!

1st June 2009, 12:21 PM	#4
Sal Brisindi diyAudio Member Join Date: Nov 2006	Bottom, you count the pins clockwise. Sal