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heater

  1. thorpej

    Make switching between 12AX7 / ECC83 and 6N2P easy

    Hey folks... I wanted a way to make it super easy to switch between 12AX7s and 6N2Ps without having to rewire the socket, so I whipped up this little helper board that sits in between the 6.3Vac heater winding and the sockets. It uses one of those little slide switches that are used to select...
  2. thorpej

    Best practices for heater traces on a PCB

    I'm working on a line stage pre-amp that I plan to (mostly) build on a PCB. I plan to put two tube sockets on the PCB -- a noval for a 12AX7, half of which will be used for a tone control amplifier for each channel, and an octal for the output stage (a 6AS7 / 6080), again, half of which will be...
  3. Kahoona

    Help with a heater, Pelonis HC-451 Please

    Hi A friend of mine has three Pelonis Ceramic Disc heaters which he loves. Pelonis no longer will repair them. All three will only work in a very low output. They have been repaired for this problem before. They should put out the required amount of heat to warm the area up to the selected temp...
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