Capacitive coupling device for filter - has threaded rotatable spindle mounted in plate of blocking capacitor

摘要

The coupling device has a threaded spindle movable in the direction of a filter circuit. The spindle rotated by a knurled knob is mounted in a plate designed as a blocking capacitance, insulated from the outer conductor by a mica. plate. It has a thread for the spindle, and runs further inside in the form of a sleeve whose end presses on the spindle. The sleeve is supported in the plate area by a centring insulating element on the outer conductor. The threaded outer conductor end is screwed into the filter outer conductor block.