euroelectron
Thursday, August 2, 2018
For Pleiades grid to cathode potential measurements a 1GΩ input impedance voltmeter is used
On Pleiades experiments on electron tube microphone head booster amplifiers the YFE YF-2200 digital multimeter is used.
At the smallest mV scale its input impedance according to the manual is 1000MΩ.
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