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Tube Pin Identification
#11

(08-13-2016, 02:15 PM)klondike98 Wrote:  Here's the difference between the Philco schematic you have posted and the pin-out diagrams in the databases:

[Image: https://dl.dropboxusercontent.com/u/5462...UBE101.jpg]

The Philco schematic is on the left and the pin connections as seen from the bottom of the tube are listed in RED numbers.  You need to look at the actual elements in the tube, i.e. the plate (pin 2), the cathode (pin 5), the grid closest to the plate (pin 4) etc.  The grid cap on the top of the tube is unnumbered.

Hope that helps.

Yes that helps tremendously. I see why I was getting so confused. In this example I was looking at the pin to the left of the cathode ground (pin 1) thinking that it was either pin 2 or 6 and it wasn't lining up when I traced the circuit. I guess they laid out those schematics in the easiest way possible and not actually by order of pins. Thanks for the image. That helped clarify things for me.


Messages In This Thread
Tube Pin Identification - by IowaPhilco - 08-13-2016, 10:48 AM
RE: Tube Pin Identification - by klondike98 - 08-13-2016, 12:26 PM
RE: Tube Pin Identification - by David - 08-13-2016, 12:30 PM
RE: Tube Pin Identification - by Radioroslyn - 08-13-2016, 12:49 PM
RE: Tube Pin Identification - by IowaPhilco - 08-13-2016, 01:57 PM
RE: Tube Pin Identification - by Radioroslyn - 08-13-2016, 05:50 PM
RE: Tube Pin Identification - by Radioroslyn - 08-13-2016, 12:55 PM
RE: Tube Pin Identification - by IowaPhilco - 08-13-2016, 01:50 PM
RE: Tube Pin Identification - by Jim Koehler - 08-13-2016, 02:02 PM
RE: Tube Pin Identification - by IowaPhilco - 08-13-2016, 02:03 PM
RE: Tube Pin Identification - by klondike98 - 08-13-2016, 02:15 PM
RE: Tube Pin Identification - by IowaPhilco - 08-13-2016, 02:50 PM
RE: Tube Pin Identification - by Radioroslyn - 08-14-2016, 05:53 AM
RE: Tube Pin Identification - by IowaPhilco - 08-14-2016, 12:31 AM



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