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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: I'm going to try a different DVM also... posted by Jonesy on May 14, 2014 at 21:50:19:
When you measure the voltage (milli-DC), you are really measuring the voltage drop across a known set resistor tied from the cathode-to-ground. The idle current passed can be related to this voltage drop, by Ohm's Law.To measure the actual current passed, you need to break the connection between ground and the cathode of each tube. Then, insert your DVM probe to complete the circuit.
Edits: 05/15/14
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Follow Ups
- RE: I'm going to try a different DVM also... - FenderLover 01:01:00 05/15/14 (1)
- Ok. I'm good then... - Jonesy 20:51:51 05/15/14 (0)
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