1. Sliding resistor rated the maximum current of the energy circuit;
2. In order to adjust, generally not too much obstructive
If you use it, you can slide the resistor to be tested.
If you use it, the blocking device is compared.Essence
3. Most of the experimental conditions slide and the resistor two:
⑴ Use conditions for the use of pressure device circuits
①R0 ＞> R, and the voltage range is required to be compared
Large or required multiple sets of data;
② The power supply is large, even though
The current is greater than the current or greater than the amount of the meter meters
Jent;
③ Require circuit voltage or current from cocoa
When continuous adjustment.
⑵Catter circuit use conditions
① Use the resistance R R0 to control the small R0, and it is negative
The prerequisite for the safety of the electric meter;
② The same, the same, for the sake, for the end
Yes, the circuit should be considered.
Equipment selection variable resistor two ::
Add two: 1.
2. Select the restricted flow connection method, the resistance value and resistance of sliding change are not much or slightly measured by the resistance to the resistance
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