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Published on 2022-8-2 09:05
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This post is from Analog electronics
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From the simplified circuit diagram,
the so-called two-period oscillation with not too long a period may be caused by the start and stop of the PWM waveform, which can be ignored.
However, I suspect that other factors, such as the load size of the relay, may cause this. I need to check the working waveform of the relay during this period based on the waveform, that is, what state the relay is in during these two stages, or other actions caused by the input current Iac.
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Published on 2022-8-16 09:23
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qwqwqw2088
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Published on 2022-8-3 08:21
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qwqwqw2088
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Published on 2022-8-3 08:24
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This post is from Analog electronics
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How do you judge that "the waveform feels like the safety relay is turned on first, then off, and then on again"? I suggest taking a screenshot of a slightly larger circuit to see
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Published on 2022-8-15 15:59
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qwqwqw2088
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Published on 2022-8-15 15:59
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[attachimg]632624[/attachimg]
[attachimg]632623[/attachimg]
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Published on 2022-8-15 18:05
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This post is from Analog electronics
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This post is from Analog electronics
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From the simplified circuit diagram, the so-called two-period oscillation with not too long period may be caused by the start and stop of PWM waveform. This can be ignored. However, it is suspected that other places, such as the load size of the relay, may cause this. According to the waveform, check the working waveform of the relay in this period, that is, the relay
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Published on 2022-8-16 09:23
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qwqwqw2088
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Published on 2022-8-16 09:23
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