CAUTION THOUGH:
... but low quality or special purpose ones often don’t. I often connect one if I’m not sure, or if I want to ensure protection of horribly expensive devices.
Originally Posted by
drivesafe
(1) This only applies if you are adding some of your own unprotected electronics ....
(2) Every single electronic device ... already have spike protection built in.
(3) And a perfect example is the fact that most relays do not have any form of spike protection
Thats technically true, but we all know some gear is low spec or gets through the quality control or design regs, and we’ve all had failures due to those issues. (1) Sorry, I got the impression that the OP is having a bit of fun with custom devices and wiring. And some of his gear sounds expensive, so I’d be ensuring or installing failsafe diode/other suppressors (@ 25c each, its not worth the risk) (2) Custom gear only has it if you build it in, and as you say, many relays don’t have it. Placing reverse biased diodes or other suppressors across sources of spikes (noise) is good practice for 2 reasons: to backup other suppressors, which are often built to price, and do sometimes fail, and to cut down electrical noise, that interferes with and places extra stress on radios, lighting, inverters, etc etc (3) as you say ...
Doctorrr Deee
1998 Disco1 300TDi; aircon & radio !!
1993 Deefer 200TDi; worker, we fell out of love after the 5th gearbox rebuild.
1983 Rangie 3.5 V8; beastieboy, gorn to the big smoke.
1959 SII 88" LtWt exarmy; chickmagnet, floating in the ether.
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