1432-U
The General Radio 1432-U Decade Resistor was introduced in Catalog Q (1961) and remained available through Catalog S (1965).
The Type 1432-U is decade resistance box is comprised of four Type 510 decade resistance units in series for a total resistance of 111.1 Ω. The 510 decade units use an 11 position switch, the first position shorts the decade the folowing positions increase the resistance by a factor of 1. The decade switch is what's refered to as a make before break configuration, regardless of the position there's always a continuity at it's terminals. The terminals are Type 938 equiped with a shorting link to the case. The decades are housed in an aluminium case shielded and insulated from its resistance termials.
Specifications
- Total Resistance:111.1 Ω
- Number of Decades: 4
| Decade Unit Type | Total Resistance Ohms | Resistance / Unit Ohms | Accuracy per increment | Maximum Current | Power/step |
|---|---|---|---|---|---|
| 510-AA | 0.1 | 0.01 | ±02% | 4 A | 0.6 W |
| 510-A | 1 | 0.1 | ±0.5% | 1.6 A | 0.6 W |
| 510-B | 10 | 1 | ±0.15% | 800 mA | 0.6 W |
| 510-C | 100 | 10 | ±0.05% | 250 mA | 0.6 W |
Links
- Experimenter June 1951 describing Type 1432 Series
- Experimenter November 1960 describing Types 1432-T and 1432-U