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Flyback diode - Wikipedia
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bi-directional flyback diode for relay spike protection - Electrical Engineering Stack Exchange
Flyback diode - Wikipedia
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Using Flyback Diodes in Relays Prevents Electrical Noise in Your Circuits | PCB Design Blog | Altium
Using Flyback Diodes in Relays Prevents Electrical Noise in Your Circuits | PCB Design Blog | Altium
Suppression Diode
circuit design - Do all relays need a diode in parallel with the coil? - Electrical Engineering Stack Exchange
FAQ03676 of General Purpose Relays FAQ
Why is diode D1 placed in parallel with the relay coil in this schematic? : r/AskElectronics
Why is there a Diode Connected in Parallel to a Relay Coil? | Diode, Electronics projects for beginners, Relay
Diode Connected in Parallel to a Relay Coil – Relay diode - Electronics Area
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Diode Parallel to a DC Contactor - CR4 Discussion Thread
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A Layman's Guide to Coil Suppression
switch mode power supply - Will a parallel diode across 24Vdc line be effective for relay coil surge relief? - Electrical Engineering Stack Exchange
Resistor / Diode Sizing | Electrician Talk
Why do DC relays have a diode in parallel in its coil? - Quora
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