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The {{Title|General Radio General Radio 1409 Standard Capacitor}} was introduced in {{Catalog O}} and remained available through {{Catalog 1978}}. | The {{Title|General Radio General Radio 1409 Standard Capacitor}} was introduced in {{Catalog O}} and remained available through {{Catalog 1978}}. | ||
The | The 1409 Standard Capacitors are fixed mica capacitors of very high stability for use as two or three-terminal capacitance standards in the laboratory. The capacitor is installed in an aluminum case along with Silica gel desiccant then sealed with hi-temp potting wax. A well located on the right side of the case for the insertion of a dial-type thermometer. Three jack-top binding posts are provided on the top of the case and removable plugs on the bottom, for convenient parallel connection without error. Each capacitor is supplied with a certificate of calibration giving two and three terminal measured capacitance. | ||
==Specifications== | ==Specifications== | ||