Quote:
Originally Posted by 1930-Pickup
Thanks Pete. I'm still not totally clear (my own fault).
When you say "This spike can be 400 volts or more", you're saying it can be 'a number up to 400, or more'. Effectively, 'any number' would fall into this category.
So to keep this Model A related, is 400v a value that has been measured on a Model A (or similar) system with an oscilloscope or other appropriate equipment?
Future buyers of condensers will be happy to know they are buying condensers properly rated for their Model A.
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It depends on the primary supply voltage, the individual coil, capacitor and the rpm (interrupt frequency) what the voltage spike will actually be. I have measured 300+ on a scope.
If you are worried about capacitor quality, try one of those brass things Tubman makes. They seem to match most coils found on model A's.