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ID = 19952
Brand: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH
Tube type:  Electrometer, Space Charge Grid 
Identical to YG1000

Base Magnoval (9-Pins), B9D Top contact with a cap.
Was used by Technology / Measurement
Filament Vf 1.5 Volts / If 0.05 Ampere / Direct / Battery =

Electrometer tetrode intended as high-input impedance bridge circuits for pH-meters or nuclear radiation meters. All glass body with control grid to top cap and Magnoval base.

Typical operating conditions:

  • 8.0V plate
  • 10V G2
  • -2.9V G1
  • 140 microamps plate current
  • 100 micromhos transconductance
  • Ig lower than 6*(10exp-14) A

Must be shielded from light and from electromagnetic fields.

Text in other languages (may differ)
YG1000: Private collection
Emilio Ciardiello

More ...
YG1000: Telefunken Taschenbuch 1971
Anonymous 15 Collector

YG1000: Telefunken Taschenbuch 1971
Anonymous 15 Collector

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