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flyback - Can a Zener diode that protects a switch against inductance when the switch opens, affect turn on speed of the valve when you close it again? - Electrical Engineering Stack Exchange
Schematic Review - Flyback Diode to protect Reed switch from Relay Coil | Electronics Forum (Circuits, Projects and Microcontrollers)
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inductor - Minimum specs before a flyback diode is needed for a relay? - Electrical Engineering Stack Exchange
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