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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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Thread Tools |
1st May 2019, 2:50 pm | #1 |
Triode
Join Date: Aug 2018
Location: Kauhava, Finland
Posts: 37
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How to measurement iA avo ct160 tube tester
Mikko hi. I wonder how to measurement iA exsamble EL84 tubes? Avo mk4 show it right now but how Avo ct 160 show it?
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1st May 2019, 2:57 pm | #2 |
Moderator
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 21,289
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Re: How to measurement iA avo ct160 tube tester
Just go through the normal test procedure first selecting a suitable grid bias voltage and then making no further adjustment to the grid voltage. Once the meter is zeroed (bridge balanced) read the current from the anode current control scales. These controls have no effect on the actual anode current, they just enable it to be measured.
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Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |
1st May 2019, 8:59 pm | #3 |
Triode
Join Date: Aug 2018
Location: Kauhava, Finland
Posts: 37
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Re: How to measurement iA avo ct160 tube tester
Ou jee of course. Now i am much happy.
Thank s Best Regaird Mikko |
3rd May 2019, 11:17 am | #4 |
Octode
Join Date: Dec 2008
Location: Wincanton, Somerset, UK.
Posts: 1,782
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Re: How to measurement iA avo ct160 tube tester
If you want to double check your result, remove the Anode 1 link and substitute a mA meter. It will read half the actual anode current
John |
4th May 2019, 7:11 am | #5 |
Triode
Join Date: Aug 2018
Location: Kauhava, Finland
Posts: 37
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Re: How to measurement iA avo ct160 tube tester
Hi. If i use that anode link, is upper or lower link +ve?
Best regaird Mikko |
4th May 2019, 10:31 am | #6 |
Octode
Join Date: Dec 2008
Location: Wincanton, Somerset, UK.
Posts: 1,782
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Re: How to measurement iA avo ct160 tube tester
On mine it's wired with +ve closest to the hinge, -ve adjacent to the selector switch.
John |