This is blank PCB used to build a single-ended tube power amplifier, using a variety of output tubes. I used it for a 4D32 ultralinear amp. For full details on the amplifier design, including pictures, measurements, schematics, bill of materials, mechanical drawings, etc. refer to my web site. eBay will not allow me to post the link here any longer, so you will need to do a web search. Google "pmillett 4D32".
The PCB has only the input and driver circuits on it, for a single channel - the output tube(s) and power supply are off-board. It uses a single tube, a high gm pentode like the 12HG7, triode connected, with a CCS on the plate. NFB can be provided if desired.
Note that this project does involve construction of high-voltage circuitry, so do not undertake this unless you are qualified and comfortable building circuits that use dangerous voltages!
This auction is for is one PCB only, no parts or anything else is included. Will ship anywhere. Flat rate shipping is shown, additional PCBs ship for free.
Flat rate shipping via FedEx to US destinations is shown.
LIABILITY DISCLAIMER
A person who constructs or works on electronic equipment may be exposed to hazards, including physical injury, the risk of electric shock or electrocution, and exposure to hazardous substances such as lead, mercury, and other inorganic or organic compounds. These hazards can result in health problems, injury, or death. Only qualified persons who understand and are willing to bear these risks themselves should attempt the construction of electronic equipment. By purchasing this item, the buyer acknowledges these risks.
Vacuum tubes operate at high temperatures, may contain toxic substances, and may have exposed parts that carry hazardous voltages. There is a risk of electric shock, electrocution, burns, or fires that is inherent in the construction and use of vacuum tube equipment. By purchasing this item, the buyer acknowledges these risks.
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