I'm in the process of trying to build this, and I'm about to start obtaining components, but had a few questions regarding some of the specifics of the schematic.
Does the polarized capacitor marked C3 @ 1uF have to be polarized, or could it be replaced with a non-polarized one of the same capacitance?
If it has to be and I can't find a polarized cap, would a non-polarized cap and a inline diode function equivalently?
Also, in regards to the tube (I will be running a 12AT7 tube in the device) is 450mA too much current? If so, how would I go about reducing the current? Since I will be running the tube heater filament directly off a transformer designed to output at 12V / 450mA, does the output need to be rectified?
More details and information about the application as it becomes necessary.
Does the polarized capacitor marked C3 @ 1uF have to be polarized, or could it be replaced with a non-polarized one of the same capacitance?
If it has to be and I can't find a polarized cap, would a non-polarized cap and a inline diode function equivalently?
Also, in regards to the tube (I will be running a 12AT7 tube in the device) is 450mA too much current? If so, how would I go about reducing the current? Since I will be running the tube heater filament directly off a transformer designed to output at 12V / 450mA, does the output need to be rectified?
More details and information about the application as it becomes necessary.