1432-X

The General Radio 1432-X Decade Resistor was introduced in Catalog Q (1961) and remained available through Catalog S (1965).

The Type 1432-X is decade resistance box is comprised of six Type 510 decade resistance units in series for a total resistance of 111,111 Ω. The 510 decade units use an 11 position switch, the first position shorts the decade the following positions increase the resistance by a factor of 1. The decade switch is what's referred 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 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: 111,111 Ω
• Number of Decades: 6

Type 1432-X Installed 510 Decade Units

Decade Unit Type	Total Resistance Ohms	Resistance / Unit Ohms	Accuracy per increment	Maximum Current	Power/step
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
510-D	1,000	100	±0.05%	80 mA	0.6 W
510-E	10,000	1000	±0.05%	23 mA	0.5 W
510-F	100,000	10,000	±0.05%	7 mA	0.5 W

Links

• Experimenter June 1951 describing Type 1432 Series
• Experimenter September 1961 describing Type 1432-X