This is all about how far you want to push it. I take it you are set on a certain chassis; am I right?
I design my own chassis, but its dimensions is ideal now, so I just ask how can I improve the power supply if I use one for both channels. Maybe is possible to put two rectifiers with all capacitors, but I am afraid that it will take a lot of time to design it and also a lot of money to let it manufacture - I would like to shield audio path from PSU part by steel partitions.
Another possibility is to use the original Mellows schematic with serial connection of filtering capacitors (they may be smaller then), but simulation shows that it does not have a good filtering effect - 7Vp-p ripple at high current consumption. Someone posts that it is OK, but i dont feel good about it ...
Another possibility is to use the original Mellows schematic with serial connection of filtering capacitors (they may be smaller then), but simulation shows that it does not have a good filtering effect - 7Vp-p ripple at high current consumption. Someone posts that it is OK, but i dont feel good about it ...
Hi!
Can anyone tell me how to connect the heating in series on the 6C33CB tubes? Which is the best solution? Which pins to connect?
Can anyone tell me how to connect the heating in series on the 6C33CB tubes? Which is the best solution? Which pins to connect?
Tyimo, Better connect the 2 heater filaments in serie... but be aware those tubes are current hungry for the first 5 seconds, it's huge I did a compound regulator to limit the current first then the tension at the end... The wiring is in the picture...
and Datasheet
and Datasheet
Attachments
Yes Tyimo, it's grounded in the middle on the design... It's a best practice to power up the channel.... wait for the temp to stabilize, and then measure the voltage between the mid point of the heaters of the tube to ground...after that you can decide to ground or adjust the level of the mid point to a negative PSU...