Delayed relay operation from a signal lock LED

[jean-paul]

Something more sturdy with lower RDSon would not hurt as it drives a coil over a longer period. Many SMD MOSFETS are capable of ultra low (tens of milliOhms area) RDSon and a few A. For instance 2N7000/BS170 work OK with tiny micro-relays with power consumption of a LED 🙂 but not with larger relays.

I think I used ZXMN2A14FTA in a few.

 

[phofman]

Does the circle mute immediately with the LED/lock off? IMO that's important since the lock event causes the thump - every lock should be muted out, even a fast series of locks/unlocks.