Power Diodes Will a power spike travel to parallel circuits?
I'm powering a relay and a device with an IC from the same power supply (12VDC), and they are wired in parallel. Will the spike caused by the coil when the relay activates potentially result in a spike in the parallel circuit?
I know that if the relay was actually wired in series with an IC or transistor, I would need to put a diode backwards across the coil leads, but is this necessary when there is nothing wired in series with the relay that could be damaged?
The spike caused when the relay de-energizes is going to go every where. It could turn the semiconductor material of the device controlling it into just so much more plain wire. That is why a diode is placed across the coil m of a relay to discharge the reverse voltage generated by the coil at turn off. The cathode of the diode will point towards the positive supply potential, while the anode is connected to the negative supply potential. Spikes, even in low voltage applications are very bad for the health of the other components.
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Diode propulsion could power microbots 2
Where can I find a power diode for a '95 f-150?
dealer is the best bet
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