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One of the mains undervoltage alarm circuits
Source: InternetPublisher:偷熊计划 Keywords: Alarm circuit BSP potentiometer Updated: 2020/10/29
When the AC grid voltage drops to a certain value, some electrical equipment will not work properly or even cause damage. For this reason,
undervoltage alarm equipment is needed.
The circuit is shown in Figure 13-65. Adjust the potentiometer RP to change the undervoltage alarm limit.
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