buizentester onbekend (Techniek Radio/TV)

door Maurice , Dordrecht, 10.11.2013, 22:31 (4033 dagen geleden) @ grotejan

intrigeert mij toch die 2 varicaps.
Boel spoelen ook.

Denk ik aan oscillators.
Mutual conductance tester = Steilheid testen.
http://www.r-type.org/articles/art-118.htm

The mutual conductance tester tests the tube dynamically by applying bias and an AC voltage to the control grid, and measuring the current obtained on the plate, while maintaining the correct DC voltages on the plate and screen grid. This setup measures the transconductance of the tube, indicated in micromhos.
Dynamic conductance tester

The dynamic conductance tester is just a variation of the emission tester with its implications, where a proportional AC voltage is applied to each electrode. This tester exists thanks to Jackson[which?] mainly to avoid infringing the patents of the mutual conductance tester held by Hickok Electrical Instrument Company, but obviously do not provide the same measurements.