Quote:
Originally Posted by oldeurope
The tester should be connected at the primary (230VAC) input only!
|
Agreed.
Quote:
Originally Posted by oldeurope
Any ideas why there is a 47K resistor?
|
Presumably to avoid a high peak current through the neon. With a big transformer the stored energy in the transformer (0.5*L*I^2) might be enough to destroy the neon. I know that not all the energy will reach the neon because the voltage will quickly drop below the maintaining voltage of the neon but the total energy might still be destructive.