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Valvo K81A noise diode, for use as a standard noise source. The filament is connected between pins 1,2,3 and 7,8,9, and the anode to 4,5,6. This is to help minimise self-inductance. The filament is tungsten, and the emission and thus noise voltage at the anode resistor can be varied by adjusting the filament voltage.

  Typical Max
Vf 1.85V 2V
If 2.5A  
Va 100V 150V
Ia 15mA 20mA
Wa   3W

K81A K81A

K81A box
K81A box  

This file was last modified 15:14:14, Tuesday September 02, 2014