I have one of the old KRIS power pumps that I changed the caps and diodes in. It works real nice and is in great condition.
Here is a link to it that shows a photo of it.
Kris Inc. Power Pump
It requires a very low drive requirement, I would like to modify it to be able to be driven with a higher wattage.
I have researched this and found that it can be done two ways.
1. Add a 100 ohm non-inductive resistor and a 1kv .05 ceramic cap in series from pin 3 to ground.
2. Omit the driver tube (6JG6A) and drive the main tubes (2 x 6LQ6) directly.
I prefer the latter.
I admit that I am not competent enough to figure this out. But I can follow directions very well.
If someone would please tell me how to omit this driver tube while still retaining a decent input VSWR I would be eternally grateful!
Here is a link to the schematic from cbtricks in .jpg format.
http://www.cbtricks.com/Amp/kris/power_pump/graphics/kris_power_pump_sch.gif
Here is a link to it that shows a photo of it.
Kris Inc. Power Pump
It requires a very low drive requirement, I would like to modify it to be able to be driven with a higher wattage.
I have researched this and found that it can be done two ways.
1. Add a 100 ohm non-inductive resistor and a 1kv .05 ceramic cap in series from pin 3 to ground.
2. Omit the driver tube (6JG6A) and drive the main tubes (2 x 6LQ6) directly.
I prefer the latter.
I admit that I am not competent enough to figure this out. But I can follow directions very well.
If someone would please tell me how to omit this driver tube while still retaining a decent input VSWR I would be eternally grateful!
Here is a link to the schematic from cbtricks in .jpg format.
http://www.cbtricks.com/Amp/kris/power_pump/graphics/kris_power_pump_sch.gif