Just today I was thinking about my future amp project, a 45 direct coupled SE. Recently I found that diode biasing a triode (6C45's in a RIAA preamp) can be a nice thing. In the case of the 45, it would save a lot of money and inside space in the chassis, what with the size of large bypass film caps (I use Solen Fast).
So why not do it with a vacuum diode? A rectifier comes to mind - there are a number of relatively cheap rectifiers able to push thru the needed 40mA of current.
What do you think, is this smart? Can it be done?
So why not do it with a vacuum diode? A rectifier comes to mind - there are a number of relatively cheap rectifiers able to push thru the needed 40mA of current.
What do you think, is this smart? Can it be done?