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How to test Diods 6H8

Jacob Roschy Martin Renz Ernst Erb Bernhard Nagel Eilert Menke 
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Forum » Valves / tubes - Semiconductors » VALVES/TUBES / SEMICONDUCTORS in RADIOMUSEUM » How to test Diods 6H8
Matthieu Testa
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18.Apr.20 14:49

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any infos about how to test the diods on 6H8 ?



Jacob Roschy
Jacob Roschy
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18.Apr.20 20:03

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unfortunately no test values for signal diode tubes are published.

You can try this little test circuit as shown.

The 6.3 AC voltage source might be the heater voltage of the tube. Across the resistor R1 (100 kΩ), parallel with a capacitor 1 µF, you should find a DC voltage from about 6 to 10 V.

Just test on both diode units, compare it with other signal diode tubes, such as 6Q7, 6AV6, EBC41, etc.

good luck,

Best Regards,