1432-M
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The General Radio 1432-M Decade Resistor was introduced in Catalog M (1951) and remained available through Catalog S (1965).
The Type 1432-M is decade resistance box comprised of five Type 510 decade resistance units in series, for a total resistance of 111,110 kΩ in steps of 1 Ω.
The 510 decade units use an 11-position switch, with the first position shorting the decade, and the following positions increasing the resistance by one step. The switch has a make-before-break configuration, i.e. regardless of the position there is always continuity between the terminals. The terminals are Type 938 equipped with a shorting link to the case. The decades are housed in an aluminum case shielded and insulated from its resistance terminals.
Specifications
- Total Resistance: 111,110 Ω
- Number of Decades: 5
Decade Unit Type | Total Resistance | Resistance/Step | Accuracy/Step | Maximum Current | Power/Step |
---|---|---|---|---|---|
510-B | 10 Ω | 1 Ω | ±0.15% | 800 mA | 0.6 W |
510-C | 100 Ω | 10 Ω | ±0.05% | 250 mA | 0.6 W |
510-D | 1,000 Ω | 100 Ω | ±0.05% | 80 mA | 0.6 W |
510-E | 10,000 Ω | 1000 Ω | ±0.05% | 23 mA | 0.5 W |
510-F | 100,000 Ω | 10,000 Ω | ±0.05% | 7 mA | 0.5 W |