I'm still assembling this kit, and I'm a ways away from the resistance tests and then actually applying voltage, but I have a question about the first time voltage is applied. Is it a good idea to use a variac for the first time voltage is applied? I'm wondering if the soft start components might not appreciate the variac? Thanks in advance. matt
variac?
- Thread starter mdub71
- Start date
Grainger49
New member
A variac is more often used starting up older equipment that might have shorted power supply caps.
I'm not aware of anyone else who has started up Paramounts with a variac. The soft start does its job very well.
I'm not aware of anyone else who has started up Paramounts with a variac. The soft start does its job very well.
You can use a variac if you want to, but you won't get any useful voltage readings until you are at line voltages.
The soft start circuit provides a 2A3 grid bias during startup before the driver tube draws enough current to draw that voltage down appropriately on its own.
-PB
The soft start circuit provides a 2A3 grid bias during startup before the driver tube draws enough current to draw that voltage down appropriately on its own.
-PB
