980-A
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
