The ZX90~99 type DC resistor is a multi value device composed of ten input disks connected in series. The resistance value between the two terminals can be changed by changing the position of the switch brush contact. Resistors are small in size and easy to carry. The switch is fully sealed, does not require cleaning, has low contact pressure, long lifespan, and minimal variation. The support is made of plastic, and the insulation resistance of the whole machine is high. The readings on the panel are arranged in a straight line, making it easy and clear to read the resistance value. The resistor components are made of high-quality enameled manganese copper alloy wire wound without inductance, and undergo strict processing, so they have high stability and can be used in any position. It can be used for measurement and other experiments in factories, schools, and research institutions, as well as for precise adjustment of resistors in DC circuits. ZX90, ZX92, ZX95, ZX98 DC resistors are more suitable for calibrating resistance thermometers.

Main technical performance of ZX90-99 DC resistor
1. The range of resistance adjustment, accuracy, external dimensions, and weight of each type of resistor:

Note: ZX96 can replace ZX21 and ZX21, and ZX98 can replace ZX72.

2. Reference temperature: 20 ± 1.5 ℃ nominal temperature: 20 ± 1.5 ℃ reference relative humidity: 40%~60% nominal relative humidity: 25%~80%
3. Reference power: 0.05W nominal power: 0.1W ultimate power: 0.2W