F4901 11a 24v Schematic Top New!

To turn a device when the relay activates, wire the device's "Hot" leg through Pin 1 (COM) and Pin 3 (NO) .

Summary review (assumptions: 24 V supply, PCB/top-layer schematic, power/control circuit): f4901 11a 24v schematic top

Parallel to the signal pathways, transil arrays or ESD suppressors (such as the TR4901 or POLYSW lines indicated in complex Wistron revisions) ground rapid voltage spikes out before they hit delicate IC pins. Diagnosing Common Failures and "No Power" Faults To turn a device when the relay activates,

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