Test av rør

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Testing sequences include:

Heater filament test: Short circuit

Heater filament test: Open circuit

Heater filament test: Tolerance check

Heater cathode insulation: Leakage

Heater cathode insulation: Short Circuit

Tests for heater current abnormalities

Amplification factor

Voltage gain

Power gain

Screen grid test

Mutual conductance test

Dual test for double triodes

Emission

Inter electrode leakage

Inter electrode short circuit

Flash-over (arc detection, high voltage breakdown)

Gas ionisation test

In addition to the tests listed above, the VT1000 performs a series of unique tests under varying load

conditions which are designed to filter out bad valves and to assess if the valve is good, or needs to

be replaced.

EL34/6CA7, EL34L, 6L6, 6V6, KT66, KT77, KT88, 6550, 5881, EL84, ECC81/12AT7, ECC82/12AU7, ECC83/12AX7, ECC99, 12BH7.