View source for 722-ME

{{GR Product
|model=722-ME
|codes=COUPE
|class=capacitance standards
|summary=Precision Capacitor
|image=GR 722-ME Close-up.JPG
|caption=General Radio 722-ME Precision Capacitor
|series=722
|introduced=1954
|discontinued=1959
|designers=
|manuals=
* '''Manual Needed'''
{{Catalog History}}
}}
The {{Title|General Radio 722-ME Precision Capacitor}} was introduced in {{Catalog N}} and remained available through {{Catalog P}}. 

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==

* [[Media:GR Exp 722-D 02_1937.pdf|Experimenter February 1937 describing Types 722]]
* [[Media:GR Exp 722 01-1938.pdf|Experimenter January 1938 describing Types 722]]
* [[Media:GR Exp 722 10_1938.pdf|Experimenter October 1938 describing Types 722]]

==Photos==

<gallery>
GR 722-ME Front.JPG
GR 722-ME Front A.JPG
GR 722-ME Top.JPG
GR 722-ME Rear.JPG
GR 722-ME Case Interior.JPG
GR 722-ME Interior.JPG
GR 722-ME Interior Left.JPG
GR 722-ME Interior A.JPG
GR 722-ME Interior Bottom.JPG
GR 722-ME Interior Right.JPG
GR 722-ME Interior Top.JPG
GR 722 Carrying Case Front.jpg|Carrying Case
GR 722 Carrying Case Inside.jpg|Carrying Case
</gallery>

[[Category:Capacitance Standards]]