power supply for subminiature tubes

[wakeuptone]

Can anyone suggestion the power supply for subminiature tube.  Now, I used 9v battery for plate and 1.5v battery for heater to supply subminiature tube.

I tried to built the regulator to supply 1.5v for heater but do not function.  Input power source is 9v switching adapter, 2A supply to Plate and pass DC/DC regulator 1.5v supply to Heater per below drawing.

                ---------- 9v to -----> Plate
9v Adapter---------- DC/DC Regulator 1.5v -----> Heater

[R.G.]

What does the tube's datasheet say it needs?

[wakeuptone]

It's Russia Tube.  I have only this information. 

[iccaros]

taken from another sites translation of the full datasheet
1Zh24B; 1Z24B

High Frequency pentode with short characteristic

Directly heated cathode

Mounting position: any
Max frequency 60MHz
Miniature type
Guaranteed service life 5000h

Capacity, pF:
Input 3.6+-0.4
Output: 2.95+-0.45
Through? no more 0.008
Anode-cathode no more 0.025

Nominal characteristics:

Heater voltage 1.2V
Heater current 13+-2mA
Anode voltage 80V
Grid2 voltage 45V
Grid1 voltage 0V (I think this meand that grid cannot be positive)
Anode Current 0.95+-0.5mA
Grid2 current no more 0.1mA
0.9+-0.3mA/V (what is measured in these units?)
The same with heater voltage of 0.95V: no less 0.48mA/V
Input resistance (could it be?) with operation frequency of 60MHz: no less 100Kom
Something about noise and resistance at 30MHz: no more 6Kom
Negative Grid1 current at voltage of -1V and 0.5Mom resistance: no more 0.1uA


Maximum values
Heater voltage max 1.4V min 0.95V
Anode voltage 120V
Grid2 voltage 90V
Anode power dissipation 0.12W
Cathode current max 1.6mA
Grid1 resistance max 2.2Mom (I think this is the resistor which is connected between Grid1 and GND)
Bulb Temperature 105C

Other values:

Enviroment temperature max +85C min -60C (+60C is a bit too high, so I think that minus sign dissapeared)
Pressure 5 athmospheres

   
see --> http://www.diyaudio.com/forums/tubes-valves/59121-help-translating-russian-tube-datasheet.html for full post

[PRR]

> Capacity, pF:
> Through? no more 0.008

Feedback capacitance plate-to-grid. Significant for tuned-circuit amplifiers, insignificant for audio uses.

> 0.9+-0.3mA/V (what is measured in these units?)

Transconductance, Gm. US unit was Mho, later EUR unit is S, but is basically A/V. Gathode current change for grid voltage change.

> Input resistance (could it be?) with operation frequency of 60MHz: no less 100Kom

For most audio purposes the input resistance of a neg-grid tube is hundreds of Megohms. Above a MHz there is a resistive component which has to be accounted in tank design.

> Something about noise and resistance at 30MHz: no more 6Kom

Noise Resistance. Input hiss is similar to a perfect 6K resistor. About 1uV across the hifi audio band.

None of this matters for audio.

--------------------------------------------

The heater current is very-very small. You can run it from a 9V supply with a simple 600 ohms series resistor.

> built the regulator ...but do not function

"Do not function" is not enough for us to help you.