this post was submitted on 26 Aug 2024
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Hahaha, now I'm picturing an IC with an angry face just before it farts out Magic Smoke.
Yea, I've had a couple new impact drivers needing the controller replaced, I assume they're a package.
While my 25 year old, abused impact of the same brand keeps chugging along, eating 2x as much battery for the same job.
Well, that's basically how they behave too lol. Solid state power components are generally not very tolerant and require careful surge suppression and filtering to not have them blow up frequently.
I bet if you took that 25 year old driver apart, sanded off the commutator rotor, and put new brushes in it you'd suddenly find it'd have more power and use less battery. (And thats something you can do with older tools!)
When brushed motors get old and oxidation/dirt builds up the resistance across the brushes to the rotor coils grows and you'll lose motor efficiency.