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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: Magnavox 9302-00 Schematic posted by Eli Duttman on December 12, 2014 at 11:40:48:
I've uploaded the phono section DC heater supply. Yes, it's another voltage doubler setup. :>D
As powering the phono preamp from the "Maggot Box" disposes of concerns about sufficient B+ current, it now becomes possible to use the tweaked version of the RCA setup. I've uploaded that schematic too.
As stated previously, the tweaked setup can drive downstream loads, courtesy of the MOSFET source follower. This project is growing into something quite interesting. The front panel switch will be retained to provide a choice between phono and 1 "line" level source, like a CDP. While (IMO) switches in mV. level signal lines are bad, a switch in "line" level circuitry is fine. The O/P of the phono preamp is what will connect to the switch. The phono I/P jacks will be hard wired to the phono preamp.
Eli D.
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Follow Ups
- DC Heater PSU Schematic, etc. - Eli Duttman 19:13:45 12/12/14 (1)
- RE: DC Heater PSU Schematic, etc. - jyourison 19:47:24 12/12/14 (0)
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