980-D: Difference between revisions
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{{GR Product | |||
|model=980-D | |||
|codes=ALIEN | |||
|class=capacitance standards | |||
|summary=Decade Capacitor Unit | |||
|image=GR 980-D Front.JPG | |||
|caption=General Radio 980-D Decade Capacitor Unit | |||
|series=980 | |||
|introduced=1959 | |||
|discontinued=1965 | |||
|designers= | |||
|manuals= | |||
* '''Manual Needed.''' | |||
{{Catalog History}} | |||
}} | |||
The {{Title|General Radio 980-D Decade Capacitor Unit}} was introduced in {{Catalog P}} and remained available through {{Catalog S}}. | |||
The Type 980-D 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-D these values are 0.0001, 0.0002, 0.0002, and 0.0005 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-D | |||
decade unit is used in the Type [[1419-B]] Decade Capacitor. | |||
==Specifications== | ==Specifications== | ||
* '''Total Capacitance:''' .001 μF | |||
* '''Capacitance Per Step:''' .0001 μF | |||
* '''Accuracy:''' two terminal ±(1% + 2 pF), three terminal ±1% -(2% + 4 pF) | |||
* '''Dissipation Factor:''' less than .0002 at 1 kHz | |||
* '''Maximum Voltage:''' 500 V | |||
* '''Frequency Limit for Maximum Voltage:''' 10 MHz | |||
* '''Dielectric:''' Polystyrene | |||
==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-D Inside.jpg | |||
GR 1419-B 980-D Left.jpg | |||
GR 1419-B 980-D Right.jpg | |||
GR 1419-B 980-D Top.jpg | |||
</gallery> | </gallery> | ||
[[Category:Capacitance Standards]] | [[Category:Capacitance Standards]] | ||
Latest revision as of 06:53, 19 May 2024
The General Radio 980-D Decade Capacitor Unit was introduced in Catalog P (1959) and remained available through Catalog S (1965).
The Type 980-D 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-D these values are 0.0001, 0.0002, 0.0002, and 0.0005 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-D decade unit is used in the Type 1419-B Decade Capacitor.
Specifications
- Total Capacitance: .001 μF
- Capacitance Per Step: .0001 μF
- Accuracy: two terminal ±(1% + 2 pF), three terminal ±1% -(2% + 4 pF)
- Dissipation Factor: less than .0002 at 1 kHz
- Maximum Voltage: 500 V
- Frequency Limit for Maximum Voltage: 10 MHz
- Dielectric: Polystyrene
Links
- Experimenter July 1956 describing Types 980 and 1419-A
- Experimenter October 1957 describing Type 980 and 1419-K
