[AMPS] TB 4/1250 datasheet

[Anders Karlsson]

Here is some information about that tube:

TB4/1250

Max:
Frequency		100MHz
Anode voltage: 	 	4000V
Anode dissipation:	450W
Grid dissipation:	50W
Grid current:  		115mA
Cathode current:	650mA

Operating conditions:

Va = 3000V
Vg = -375V
Ia = 450mA
Ig = 85mA
Vg (peak) = 580V
Grid input power = 42W
Anode input power = 1350W
Anode dissipation = 300W
Output power = 1050W
Efficiency = 78%

Heating: 		10V, 9.9A

Capacitances:
Anode to att other elements except grid:	Ca = 0.17pF
Grid to all other elements except anode:	Cg = 8.0pF
Anode to grid:					Cag = 7.0pF

Amplification factor	28

Mounting position: Vertical with base up or down.

(From "Philips data handbook, book T1, 1989")


"Firson, YD1BIH" wrote:
> 
> I found used tube, manufactured by AMPEREX France, Type of the tube is TB
> 4/1250, I do not find a kind of this tube in ARRL handbook datasheet, any
> body know and give me information data sheet for this tube ??..
> 
> Thanks in Advance
> Firson - YD1BIH
> 
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