722-ME

The General Radio 722-ME Precision Capacitor was introduced in Catalog N (1954) and remained available through Catalog P (1959).

The Type 722-ME is a laboratory quality, dual-section precision variable capacitor.

The set value of both sections can be read directly from a drum mounted on the rotor shaft. A correction chart is mounted on the panel for that particular capacitor.

The rotor is mounted on ball bearings in an aluminum casting driven by a precision worm drive, and is electrically attached to the frame with silver overlay contacts.

The two stators are brought out to separate terminals on the panel with the shared rotor terminal.

The rotor terminal is a the same potential as the panel and copper lined walnut case.

The capacitor is supplied with a fitted wooden carrying case.

Specifications

• Capacitance Range: 0 to 10.5 pF and 0 to 105 pF
• Dial Accuracy: High Range ±0.2 pF ±0.1%; Low Range ±0.05 pF ±0.1%
• Maximum Voltage: 1000 V peak

Links

• Experimenter February 1937 describing Types 722
• Experimenter January 1938 describing Types 722
• Experimenter October 1938 describing Types 722

Photos

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  Carrying Case

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  Carrying Case