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PM12A_UX

Information - Help 
ID = 45236
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to PM12A_UX = PM12A
Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.18 Ampere / Direct / Battery =
Dimensions (WHD)
incl. pins / tip		 49 x 143 x mm / 1.93 x 5.63 x inch
Weight 67 g / 2.36 oz
pm12a_ux_4.png PM12A_UX: W.H.
Wolfgang Holtmann

Just Qvigstad

Collection of

Stuart Irwin (AUS)
 
pm12a_ux_detail.jpg

PM12A_UX
 
Forum contributions about this tube
PM12A_UX
Threads: 1 | Posts: 5
Hits: 508     Replies: 4
Wrong pin connections.
Stuart Irwin
25.Jul.23 		  1
Wrong pin connections. 

Hello.

I have noticed that with this valve the pin connection diagram shown is incorrect.  Pin 2 is the screen grid and the top cap is the anode.

Regards, Stuart Irwin
Harald Giese
25.Jul.23 		  2
Wrong pin connections. 

 

 

Hi Stuart,

is this the correct pin assignment of the PM12A_UX?

Does the tube have a bajonet guide pin as shown in the picture?

Is the filament center tap connected to the suppressor grid, as shown in the picture?

If yes, I will replace the presently shown pin assignment picture by this one.

 

Best regards, Harald
Wolfgang Holtmann
25.Jul.23 		  3
Wrong pin connections. 

Hello together

I just uploaded the corrected base diagram;

Kind regards

P.S.
Unsere Beiträge haben sich überschnitten, Harald....
Harald Giese
25.Jul.23 		  4
Wrong pin connections. 

Hi all,

Wolfgang's pin assignment picture has now been activated on the PM12A_UX page.

Regards, Harald
Stuart Irwin
26.Jul.23 		  5
Wrong pin connections. 

Hello Harald.

In answer to your questions:  That diagram is correct except that there is no suppressor grid.  The valve, from an example I have, does have a bayonette pin.

Regards, Stuart

 
 
PM12A_UX
End of forum contributions about this tube
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