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Old 3rd May 2013, 08:35 PM   #2181
Salas is offline Salas  Greece
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D1 felt a little bullied to so it was replaced. Now its set happily to 260 Vout and 40 mA. I thank Metaxa for that one and wave to Zeus
5 star repair.
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Old 3rd May 2013, 09:43 PM   #2182
stajo is offline stajo  Sweden
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5 star repair.
Thank you. I went over for some more for helping me on the hum part also.
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Old 11th May 2013, 09:45 AM   #2183
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Any progress?
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Old 11th May 2013, 10:00 AM   #2184
stajo is offline stajo  Sweden
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With the Metaxa?
















I'm rigging a new testbed for the 6V6. The barge grew out of the costume and it was to messy to know which factor gave what result. This one gonna be more up to modular approach. I'm thinking resistor AF, choke AF, resistor CF, choke CF, ability to go with or without SSHV etc. Its better to let it take some time and think it thru.

I've also been working some on the lab-bench. I noticed that the mV measuring got affected alot on how I held the probes, close to lamps, powercords etc. The bench is prepped with an isolated earthgrounded worktop and shielded AC etc. Ill post some when I have some results.

Last edited by stajo; 11th May 2013 at 10:08 AM.
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Old 11th May 2013, 10:10 AM   #2185
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With the Metaxa?
















I'm rigging a new testbed for the 6V6. The barge grew out of the costume and it was to messy to know which factor gave what result. This one gonna be more up to mudular approach. I'm thinking resistor AF, choke AF, resistor CF, choke CF, ability to go with or without SSHV etc. Its better to let it take some time and think it thru.

I've also been working some on the lab-bench. I noticed that the mV measuring got affected alot on how I held the probes, close to lamps, powercords etc. The bench is prepped with an isolated earthgrounded worktop and shielded AC etc. Ill post some when I have some results.
Watch out for fluorescent bench lights !!

I have 2 over by bench and they are very measurable .

Building a separate Modular PSU gives you the benefit of using it for several different amps.
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Old 11th May 2013, 10:16 AM   #2186
stajo is offline stajo  Sweden
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Watch out for fluorescent bench lights !!
Im thinking LED-lights, my halogen and also the scopes phosphor screen is easily measurable several decimeters away
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Old 11th May 2013, 10:20 AM   #2187
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Im lazy.....i just switch of the lights when its final measurement time .
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Old 11th May 2013, 10:29 AM   #2188
Salas is offline Salas  Greece
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Led lights better use a linear variable CCS because their usual PWM controllers are notorious for EMI.
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Old 11th May 2013, 06:08 PM   #2189
stajo is offline stajo  Sweden
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Im planning to take this down with another RC but is it safe to probe this with a 300 V / 400 V p-p scope or should i go for 10X?
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File Type: jpg new setup 001 (3000x2000).jpg (609.4 KB, 139 views)
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Old 11th May 2013, 06:17 PM   #2190
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Only with 10X probe setting at such HV. At 1X the probe can be much lower voltage spec than max quoted.
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