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Video on planned obsolescence.

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David Hess:

--- Quote from: SilverSolder on April 04, 2021, 05:10:25 pm ---The switch to more advanced bulbs that have less "real world" life and at higher cost might be considered related to Planned Obsolescence:    basically, needlessly increase the complexity of a product so you can charge more for it.

This works best of all if you can lobby to have laws passed that bans the simple and inexpensive solution that you don't think is making you enough money...  especially if you think the public would not accept price rises on the existing, simpler product!
--- End quote ---

I could make the same statement about electronically commutated motors which replaced shaded pole motors in refrigerator evaporators because of EPA requirements.  I have never had one of these shaded pole motors fail, but I have had to replace the electronically commutated motor in my new refrigerator 6 times now in 10 years, and they cost $30 each.

james_s:

--- Quote from: David Hess on April 09, 2021, 01:53:12 am ---I could make the same statement about electronically commutated motors which replaced shaded pole motors in refrigerator evaporators because of EPA requirements.  I have never had one of these shaded pole motors fail, but I have had to replace the electronically commutated motor in my new refrigerator 6 times now in 10 years, and they cost $30 each.

--- End quote ---

I'm kind of surprised to hear they're THAT bad. Did you look into what actually failed? I've had the shaded pole motors fail before but it was only the bearings. My friend had a fridge in a rental house that would make weird chirping noises, I immediately identified it as bearing failure in the evaporator fan motor but they had no clue what it was.

David Hess:

--- Quote from: james_s on April 09, 2021, 02:01:22 am ---
--- Quote from: David Hess on April 09, 2021, 01:53:12 am ---I could make the same statement about electronically commutated motors which replaced shaded pole motors in refrigerator evaporators because of EPA requirements.  I have never had one of these shaded pole motors fail, but I have had to replace the electronically commutated motor in my new refrigerator 6 times now in 10 years, and they cost $30 each.
--- End quote ---

I'm kind of surprised to hear they're THAT bad. Did you look into what actually failed? I've had the shaded pole motors fail before but it was only the bearings. My friend had a fridge in a rental house that would make weird chirping noises, I immediately identified it as bearing failure in the evaporator fan motor but they had no clue what it was.
--- End quote ---

Bearing wear after a year is insignificant.  The electronics are failing.  The original and all of the replacements except one come from Switzerland but the most recent one, which has lasted the longest so far, was made in China.   :-//

james_s:
Yeah the shaded pole motors I've had fail were all at least 15 years old. I'm still surprised these are that bad, I'd be curious to look inside one and see what is actually failing, it may be a good opportunity to improve the design. There is no inherent reason a motor like that can't be reliable, I mean the ubiquitous brushless DC muffin fans often last many years and in every one of those I can recall having fail it was bearings.

wraper:

--- Quote from: David Hess on April 09, 2021, 01:53:12 am ---
--- Quote from: SilverSolder on April 04, 2021, 05:10:25 pm ---The switch to more advanced bulbs that have less "real world" life and at higher cost might be considered related to Planned Obsolescence:    basically, needlessly increase the complexity of a product so you can charge more for it.

This works best of all if you can lobby to have laws passed that bans the simple and inexpensive solution that you don't think is making you enough money...  especially if you think the public would not accept price rises on the existing, simpler product!
--- End quote ---

I could make the same statement about electronically commutated motors which replaced shaded pole motors in refrigerator evaporators because of EPA requirements.  I have never had one of these shaded pole motors fail, but I have had to replace the electronically commutated motor in my new refrigerator 6 times now in 10 years, and they cost $30 each.

--- End quote ---
It only means that particular motor is crap. I have no warm feelings towards shaded pole motors whatsoever. They are junk which convert most of consumed power into a lot of heat which reduces bearing life. And the only good things about them are that they are cheap and stall current is almost the same as current at normal operation.

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