Quote:
Originally Posted by winston_1
Quote:
Originally Posted by high_vacuum_house
There are certain “smart” power supplies that could see a low mains voltage and switch to working at 110V ac. Then the mains voltage increases above this and damages the power supply.
Christopher Capener
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Never known a power supply that does this. There are power supplies that can work from around 90 to 260v but they work on anything in this range. |
Dedicated IC's to do this did exist! Years ago, switching power supplies used a pair of large electrolytics after the bridge rectifier, and a link to make it a voltage-doubler. The IC drove a triac to do the linking.
It's a scheme that didn't last very long in the industry, because wide-range power supplies were developed, as you say. I've just tried using Google to find such an IC, and failed.