In the distribution of voltage, there are two situations, one is the AC situation, and the other is the DC condition. Below we will introduce the two situations separately:
First, the first one is AC: in the case of AC, the effective value of the AC voltage that the varistor can withstand, usually we are expressed in ACrms, in which case the varistor is effective at AC voltage. In the case of a value, a varistor of the maximum allowable voltage of the varistor is required. About ACrms and V1mA are actually related to each other, that is to say, when we understand the former, it means that we also know the latter, but in both, it is more direct to our users for ACrms. In fact, our technicians can use the operating voltage of the circuit to select a more suitable varistor according to ACrms. At the same time, in our AC circuit, we should have a minimum operating voltage of 2.2-2.5 or more. The voltage of such an interval, this is the effective range of values ​​for the operating voltage of our AC loop. We choose this value in order to ensure the application of our varistor in the power circuit, which can guarantee a certain safety for our production and life.
However, in the DC DC loop, this requires a minimum operating voltage of between 1.6 and 2, and the same range of values ​​is the rated operating voltage specified by DC.
When the signal is in a loop, there should be a choice of the range of the minimum operating voltage greater than or equal to 1.2-1.5, and of course the peak value of the signal loop in this range.
We generally manufacture the flow capacity of the varistor according to the design specifications of the lightning protection circuit, so the current capacity of the lightning protection circuit design should be less than or equal to the flow capacity of the varistor. Http://
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