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Engineering
Electrical Engineering
Alternatives to varistors as overload protection at DC motor
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[QUOTE="jim hardy, post: 5506925, member: 327872"] i guess D2 through D5 direct motor surges to the power supply rails ? If somebody is worried that's inadequate One of these might be reassuring [URL]http://www.littelfuse.com/~/media/electronics/datasheets/tvs_diodes/littelfuse_tvs_diode_1_5ke_datasheet.pdf.pdf[/URL] or if you're protecting against lightning (1000 amps? sounds impractical to me) here's a 548 amp 20 volt... [URL]http://www.littelfuse.com/~/media/electronics/datasheets/tvs_diodes/littelfuse_tvs_diode_20kpa_datasheet.pdf.pdf[/URL]and their whole line of them [URL]http://www.littelfuse.com/products/tvs-diodes.aspx[/URL] i'd say pick one higher than your power supply tolerance but below absolute maximum voltage rating of the device [/QUOTE]
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Electrical Engineering
Alternatives to varistors as overload protection at DC motor
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