The 1432J is a decade resistor from General Radio. A decade resistor is a type of electronic test equipment with a series of resistors, inductors, or capacitors to simulate specific electrical values. An engineer can replace any standard-value component in a circuit with a used or refurbished decade resistor because of its ability to configure to almost any value.
- Total Resistance: 11,110 ohms
- Steps: 1 ohms
- Number of Dials: 4
- Type 510 Decades Used: B, C, D, E
- Mounting: Aluminum panel and cabinet
- Terminals: Jack-top binding posts set on General Radio standard ¾-inch spacing
- Shield terminal is provided
- Low zero resistance-less than 0.003 ohm per decade
- High accuracy: 0.05% for most decades
- Low temperature coefficient of resistance
- Negligible thermal emf to copper
- Resistor are adjusted to specified values at their own terminals rather than at the box terminals, so that resistance increments are always correctly indicated
- Residual impedances are small and are given in the specifications so that approximate frequency characteristics can be computed
- Maximum current for each decade based on 40°C temperature rise is engraved on panel
The 1432J Decade Resistor is an assembly of Type 510 Decade-Resistance Units in a single cabinet. Mechanical as well as electrical shielding of the units is provided by the rugged aluminum cabinet and panel, which completely enclose both the resistance units and switch contacts. The resistance units and switch contacts. The resistance elements have no electrical connection to the cabinet and panel, for which a separate shield terminal is provided.
The 1432J has a four-dial decade assembly and each decade has eleven contact studs and ten resistance units, so that the dial values overlap. Positive detent mechanisms in conjunction with bar-type knobs permit the operator to sense the position of the switches without looking at the panel.