Flyback Diode to Protect Relay
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com
Using a 1N4005 diode to quench the high flyback voltage from a 12V fan motor. But the 33V transient suppression diode didn't work.
My other channel (Julian's Shorts):
https://www.youtube.com/channel/UCeewzdnwcY5Q6gcbnZKIY8g