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ggetchell
USA
3 Posts |
 Posted - 05/13/2014 : 16:23:08
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Good Evening I purchased the GMC-080 and was reading several posts regarding using a 11M ohm resistance meter to measure the correct voltage on the circuit for specific tubes, I have not been able to find any 11M ohm meters all I can find anywhere are 10M ohm. also is this the impedance resistance or is this something different, can you recommend a low cost if available meter for this, and would a 10M ohm resistance meter work the same way???
Thanks |
Gregory P. Getchell |
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| Reply #1
ZLM
1261 Posts |
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| Reply #2
ggetchell
USA
3 Posts |
Posted - 05/14/2014 : 02:58:53
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| Thanks for the response, I thought that I would need to adjust the calculation for a 10 Meg ohm meter, but wanted to be sure. |
Gregory P. Getchell |
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| Reply #3
Alchemy2
Canada
89 Posts |
Posted - 09/07/2014 : 07:44:31
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ZLM,
I assume that the 1000Mohm or 1Gohm serial resistor is best placed on the ANODE side of the tube? Just checking.
Thanks!
Alchemy2
quote:
Originally posted by ZLM
10M ohm resistance meter should be fine.
Do get accurate voltage reading, you need to serial a 1G Ohm resistor to probe and then calculate the actual voltage reading.
See: http://www.gqelectronicsllc.com/forum/topic.asp?TOPIC_ID=3745
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The more I learn, the more I realize I do not know! |
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| Reply #4
ZLM
1261 Posts |
Posted - 09/07/2014 : 12:19:12
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The value of resistor placed on the ANODE side of the tube is depending on the tube. That is not for measuring the voltage, it is a DC current regulator resistor.
For all high voltage measuring, 1000Mohm or 1Gohm serial resistor on the meter is the best. |
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Tube Voltage measurements
