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Unread 01-03-2018, 09:36 AM
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Re: General Circuit Solenoid Question

Quote:
Originally Posted by philso View Post
None of the wall warts with only a transformer and rectifier that I have taken apart have any sort of protection devices. Please remember that these things are built down to a price. A very low price.
Correct, which is why I don't expect it to fold back (over current protection).

But since it does have CSA, I'd expect it not to start a camp fire.
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Unread 01-03-2018, 09:59 AM
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Re: General Circuit Solenoid Question

Quote:
Originally Posted by Daniel_LaFleur View Post
Correct, which is why I don't expect it to fold back (over current protection).

But since it does have CSA, I'd expect it not to start a camp fire.
Only one sample has to pass the tests required by the safety certifying body. Unless major changes are made in the design or construction of the device, re-testing is not generally necessary. They will also generally test such a device with the output shorted and the test is likely to be over in a short time. A 100% overload can cause quite a different result and will likely take longer to stabilize or end leading to many more possible failure modes.

In general, running something at 100% overload, continuously is a bad idea. The manufacturer put the spec on there for a reason. For items built down to a price like these wall warts, those specs are also probably optimistic.
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