[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: 20 joules at 100 bps vs 4 joules at 500 bps



Original poster: Steve Conner <steve@xxxxxxxxxxxx>


i`ve calculated the toroid voltage (70 cm diameter) - 1.2 MV -
what height should be the secondary to prevent flashovers?

I believe it should be about 1.2 metres since the breakdown strength of air is 3MV/m and the tracking strength across a surface is roughly one-third of that- 1MV/m.


But that's just a rule of thumb. In practice I reckon the secondary can stand more than 1MV/m since the winding acts as a series of grading rings.

Steve Conner