Reply to thread

Message

<blockquote data-quote="Lasherž" data-source="post: 8703914" data-attributes="member: 679555">Some interesting reading on the circuit basics.[URL unfurl=&quot;true&quot;]https://electronics.stackexchange.com/questions/377258/12v-12a-resettable-crowbar-circuit[/URL]So one that I found is <a href="https://www.littelfuse.com/~/media/electronics/application_notes/littelfuse_tvs_diode_automotive_circuit_protection_using_automotive_tvs_diodes_application_note.pdf.pdf" target="_blank">https://www.littelfuse.com/~/media/electronics/application_notes/littelfuse_tvs_diode_automotive_circuit_protection_using_automotive_tvs_diodes_application_note.pdf.pdf</a>I think the best course of action before deciding on one is to figure out how big that spike actually is though. If you&#039;re experiencing a pop from only 2 volt difference then these devices will be a current draw on your car constantly. If however the spike is like 10v then you&#039;ll start to be able to find devices like the one I linked which will clamp that without affecting normal operation. The spikes are caused by the alternator adjusting its pull, so it&#039;s quick to adjust but will never be instant enough without some mitigation.Large spike go for a circuit protector, small spike go with a paralleled capacitor.</blockquote>

[QUOTE="Lasherž, post: 8703914, member: 679555"] Some interesting reading on the circuit basics. [URL unfurl="true"]https://electronics.stackexchange.com/questions/377258/12v-12a-resettable-crowbar-circuit[/URL] So one that I found is [URL]https://www.littelfuse.com/~/media/electronics/application_notes/littelfuse_tvs_diode_automotive_circuit_protection_using_automotive_tvs_diodes_application_note.pdf.pdf[/URL] I think the best course of action before deciding on one is to figure out how big that spike actually is though. If you're experiencing a pop from only 2 volt difference then these devices will be a current draw on your car constantly. If however the spike is like 10v then you'll start to be able to find devices like the one I linked which will clamp that without affecting normal operation. The spikes are caused by the alternator adjusting its pull, so it's quick to adjust but will never be instant enough without [I]some[/I] mitigation. Large spike go for a circuit protector, small spike go with a paralleled capacitor. [/QUOTE]

Verification