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#1
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wad 300b pse operating voltges/currents
Could someone provide a schematic with the relevant (actual) operating voltages/currents and test points, in particular the 300b's.
ie anode voltage, cathode bias voltage, anode current etc. Also the DC resistance of the output tx primary. thanks |
#2
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Re: wad 300b pse operating voltges/currents
If you ask Greg very nicely via PM, he should be able to send you all the info on the 300B.
Output tx DC resistance is approx. 27R and impedance wrt 8R secondary load is approx. 1K5. Current through primary is approx. 160mA John |
#3
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Re: wad 300b pse operating voltges/currents
I’ve already forwarded the build instructions to Princo. No voltage check list was published. Only reference is the voltages as specified on the circuit diagram.
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#4
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Re: wad 300b pse operating voltges/currents
The test points are flagged on my circuit as A B C D E and I'd add the 40V readings at the 300B cathodes and -35V at their grids
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#5
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Re: wad 300b pse operating voltges/currents
thanks all
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