980-B: Difference between revisions
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{{GR Product | |||
|model=980-B | |||
|codes=AVERT | |||
|class=capacitance standards | |||
|summary=Decade Capacitor Unit | |||
|image=GR 980-B Front.jpg | |||
|caption=General Radio 980-B Decade Capacitor Unit | |||
|series=980 | |||
|introduced=1956 | |||
|discontinued=1965 | |||
|designers= | |||
|manuals= | |||
* '''Manual Needed.''' | |||
{{Catalog History}} | |||
}} | |||
The {{Title|General Radio 980-B Decade Capacitor Unit}} was introduced in {{Catalog O}} and remained available through {{Catalog S}}. | |||
The Type 980-B is a decade capacitance unit comprising four polystyrene capacitors sealed in a brass tub. The capacitor values are selected in a "1-2-2-5" combination. In the Type 980-B these values are 0.01, 0.02, 0.02, and 0.05 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-B | |||
decade units are used in the Types [[1419-A]] and [[1419-B ]] Decade Capacitors. | |||
==Specifications== | ==Specifications== | ||
* '''Total Capacitance:''' .1 μF | |||
* '''Capacitance Per Step:''' .01 μF | |||
* '''Accuracy:''' two or three terminal ±1% | |||
* '''Dissipation Factor:''' less than .0002 at 1 kHz | |||
* '''Maximum Voltage:''' 500 V | |||
* '''Frequency Limit for Maximum Voltage:''' 100 kHz | |||
==Links== | ==Links== | ||
* [[Media:GR Exp 980 1419-A 07_1956.pdf|Experimenter July 1956 describing Types 980 and 1419-A]] | |||
* [[Media:GR Exp 980 Series 1457-K 10_1957.pdf|Experimenter October 1957 describing Type 980 and 1419-K]] | |||
==Photos== | ==Photos== | ||
<gallery> | <gallery> | ||
GR 1419-B 980-B Inside.jpg | |||
GR 1419-B 980-B Left.jpg | |||
GR 1419-B 980-B Right.jpg | |||
GR 1419-B 980-B Top.jpg | |||
</gallery> | </gallery> | ||
[[Category:Capacitance Standards]] | [[Category:Capacitance Standards]] | ||
Revision as of 21:26, 19 May 2024
The General Radio 980-B Decade Capacitor Unit was introduced in Catalog O (1956) and remained available through Catalog S (1965).
The Type 980-B is a decade capacitance unit comprising four polystyrene capacitors sealed in a brass tub. The capacitor values are selected in a "1-2-2-5" combination. In the Type 980-B these values are 0.01, 0.02, 0.02, and 0.05 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-B decade units are used in the Types 1419-A and 1419-B Decade Capacitors.
Specifications
- Total Capacitance: .1 μF
- Capacitance Per Step: .01 μF
- Accuracy: two or three terminal ±1%
- Dissipation Factor: less than .0002 at 1 kHz
- Maximum Voltage: 500 V
- Frequency Limit for Maximum Voltage: 100 kHz
Links
- Experimenter July 1956 describing Types 980 and 1419-A
- Experimenter October 1957 describing Type 980 and 1419-K
