980-A: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
|||
| (2 intermediate revisions by the same user not shown) | |||
| Line 16: | Line 16: | ||
The {{Title|General Radio 980-A Decade Capacitor Unit}} was introduced in {{Catalog O}} and remained available through {{Catalog S}}. | The {{Title|General Radio 980-A Decade Capacitor Unit}} was introduced in {{Catalog O}} and remained available through {{Catalog S}}. | ||
The Type 980-A is a decade capacitance unit comprising four polystyrene capacitors sealed in | The Type 980-A is a decade capacitance unit comprising four polystyrene capacitors sealed in two brass tubs mounted on either side of the switch. The capacitor values are selected in a "1-2-2-5" combination. In the Type 980-A these values are 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-A decade units are used in the Types [[1419-A]] and [[1419-B ]] Decade Capacitors. | ||
==Specifications== | ==Specifications== | ||
| Line 26: | Line 26: | ||
* '''Maximum Voltage:''' 500 V | * '''Maximum Voltage:''' 500 V | ||
* '''Frequency Limit for Maximum Voltage:''' 10 kHz | * '''Frequency Limit for Maximum Voltage:''' 10 kHz | ||
* '''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 1419-A 07_1956.pdf|Experimenter July 1956 describing Types 980 and 1419-A]] | ||
* [[Media:GR Exp 980 Series 10_1957.pdf|Experimenter October 1957 describing Type 980]] | * [[Media:GR Exp 980 Series 1457-K 10_1957.pdf|Experimenter October 1957 describing Type 980 and 1419-K]] | ||
==Photos== | ==Photos== | ||
Latest revision as of 06:47, 19 May 2024
The General Radio 980-A Decade Capacitor Unit was introduced in Catalog O (1956) and remained available through Catalog S (1965).
The Type 980-A is a decade capacitance unit comprising four polystyrene capacitors sealed in two brass tubs mounted on either side of the switch. The capacitor values are selected in a "1-2-2-5" combination. In the Type 980-A these values are 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-A decade units are used in the Types 1419-A and 1419-B Decade Capacitors.
Specifications
- Total Capacitance: 1 μF
- Capacitance Per Step: .1 μF
- Accuracy: two or three terminal ±1%
- Dissipation Factor: less than .0002 at 1 kHz
- Maximum Voltage: 500 V
- Frequency Limit for Maximum Voltage: 10 kHz
- Dielectric: Polystyrene
Links
- Experimenter July 1956 describing Types 980 and 1419-A
- Experimenter October 1957 describing Type 980 and 1419-K
