980-A: Difference between revisions
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{{GR Product | |||
|model=980-F | |||
|codes=ACUTE | |||
|class=capacitance standards | |||
|summary=Decade Capacitor Unit | |||
|image=GR 980-F Front.jpg | |||
|caption=General Radio 980-F Decade Capacitor Unit | |||
|series=980 | |||
|introduced=1956 | |||
|discontinued=1965 | |||
|designers= | |||
|manuals= | |||
* '''Manual Needed.''' | |||
{{Catalog History}} | |||
}} | |||
The {{Title|General Radio 980-F Decade Capacitor Unit}} was introduced in {{Catalog O}} and remained available through {{Catalog S}}. | |||
The Type 980-F is a decade capacitance unit comprising four Type [[505]] silver mica standard capacitors. The capacitor values are selected in a "1-2-2-5" combination. In the case of the Type 980-F it's 0.1, 0.2, 0.2, and 0.5 μF. The eleven position switch maintains a combination of the four standard capacitors in parallel to produce the decade of capacitance values. The Type 980 decade units are used in the Type [[1419-K]] Decade Capacitor. The Type 980-F was designed to replace the older Type [[380-F]]. | |||
==Specifications== | ==Specifications== | ||
* '''Total Capacitance:''' 1 μF | |||
* '''Capacitance Per Step:''' .1 μF | |||
* '''Accuracy:''' two or three terminal ±0.5% | |||
* '''Dissipation Factor:''' less than .0003 at 1 kHz | |||
* '''Maximum Voltage:''' 500 V | |||
==Links== | ==Links== | ||
* [[Media:GR Exp 980 Series 10_1957.pdf|Experimenter October 1957 describing Type 980]] | |||
* [[Media:GR Exp 505 1457-K 10_1957.pdf|Experimenter October 1957 describing Types 505 and 1457-K]] | |||
==Photos== | ==Photos== | ||
<gallery> | <gallery> | ||
GR 980-F Front.jpg | |||
GR 1419-K 980-F Left.jpg | |||
GR 1419-K 980-F Rear.jpg | |||
GR 1419-K 980-F Right A.jpg | |||
GR 1419-K 980-F Right.jpg | |||
</gallery> | </gallery> | ||
[[Category:Capacitance Standards]] | [[Category:Capacitance Standards]] | ||
Revision as of 23:34, 18 May 2024
The General Radio 980-F Decade Capacitor Unit was introduced in Catalog O (1956) and remained available through Catalog S (1965).
The Type 980-F is a decade capacitance unit comprising four Type 505 silver mica standard capacitors. The capacitor values are selected in a "1-2-2-5" combination. In the case of the Type 980-F it's 0.1, 0.2, 0.2, and 0.5 μF. The eleven position switch maintains a combination of the four standard capacitors in parallel to produce the decade of capacitance values. The Type 980 decade units are used in the Type 1419-K Decade Capacitor. The Type 980-F was designed to replace the older Type 380-F.
Specifications
- Total Capacitance: 1 μF
- Capacitance Per Step: .1 μF
- Accuracy: two or three terminal ±0.5%
- Dissipation Factor: less than .0003 at 1 kHz
- Maximum Voltage: 500 V
Links
- Experimenter October 1957 describing Type 980
- Experimenter October 1957 describing Types 505 and 1457-K
