Flyback diodes question
I’m just curious where the energy goes when you cut the low side. I always imagined that you wanted to take the energy from a collapsing coil on a relay or motor to GND. But if GND is removed what is happening. Does the spike dissipate back in the coil ?
I’ve seen the same design with relays cutting the low side. Some mosfets may allow their internal diode to pass the spike to GND even if the gate is 0? But in the case of turning on a motor on the low side with a relay only the question is still relevant. The fly back diode across the coil has no oath to GND. Only +V