This refers to a limit value of dielectric breakdown voltage between electrodes. Before shipment, MEIDEN checks the vacuum capacitors to confirm that no dielectric breakdown occurs when the rated voltage is applied for the specified time.
This refers to the rated voltage value capable of being applied continuously. The peak RF working voltage is set at 60% of the peak test voltage.
This is the maximum rated current capable of being carried continuously. At higher frequencies, the maximum permissible current decreases with a greater loss due to the skin effect. The maximum rated current is defined as follows:
Vacuum variable capacitors can be adjusted to any capacitance value within the specified
range by the linear sliding motion of the moving electrode assembly, which is converted
to the rotary tuning via the capacitance adjustment shaft. Capacitance decreases
with rightward (clockwise) rotation of the shaft and can be adjusted to the minimum
capacitance in the end-stop position. Likewise, capacitance increases with leftward
(counterclockwise) rotation and can be adjusted to the maximum capacitance in the
end-stop position. Although two capacitance range end-stops are incorporated into
every variable capacitor, please note that the motor should not collide with the
maximum capacitance end-stop. Otherwise, it may impair the screw.
The permissible collision torque value at the minimum capacitance end-stop is as follows:
VM Type…40N · cmVT Type…40N · cmVH Type…40N · cm