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In Reply to: RE: GZ37 modern replacement posted by Johno on June 09, 2020 at 22:15:52
A lot of GZ37s were pressed into service as "substitutes" for the GZ34/5AR4. Check with AA sponsor Jim McShane for truly satisfactory current production 5AR4s. It took longer than we would like, but New Sensor has finally gotten 5AR4 construction squared away.
Eli D.
Follow Ups:
Back in the day.
Cheers Johno
The Sovtek 5AR4 is satisfactory, IF the series SS diode tweak is employed. I prefer UF4007s over the 1N4007s shown in the graphic. The thinking is less SS switching noise, from the outset, can't be bad. However, the vacuum rectifier definitely keeps any SS artifacts out of the PSU filter. Still, less is more here.
Eli D.
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