Measured voltages breakdown of sample switches:
Centralab JV-9000 series single pole
contact to rotor 8.5kV
contact to contact 6 kV
rotor to shaft 7.5kV
Progressively shorting Centralab:
contact to rotor 9.5kV
contact to contact 7kV
rotor to shaft 4.4kV
RSC Model 80
contact to rotor 8.5 kV
contact to contact 10kV
rotor to shaft 5.5kV
The most troublesome breakdown voltage in an amplifier is
contact to rotor breakdown. That's always the highest
voltage on any band. The lowest circuit voltage is rotor to
shaft. Maximum contact-to-contact is generally around half
the value of contact-to-rotor voltage.
73 Tom
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