xiaoning 发表于 2022-3-18 15:08

适配器供电的加热器具的测试电压怎样确定？

适配器交流供电，直流输出，器具是加热饭盒，内有发热丝，不是PTC。因加热器具是按照功率来确定测试i电压且适配器前端调节电压对整体功率无影响，如果电压调得过低适配器就会不工作，那11章和19章的测试电压怎么确定？谢谢指教

ylgc123 发表于 2022-3-26 09:30

适配器供电必定采用了开关电源模块给加热管供电，依据5.13直接采用电压*系数的平方根就可以，不考虑功率的变化。

plmijb 发表于 2022-3-27 08:56

5.13 The tests for appliances with PTC heating elements and for heating appliances and
combined appliances where the heating elements are supplied via a switch mode power
supply are carried out at a voltage corresponding to the specified power input.
When a power input greater than the rated power input is specified, the factor for multiplying
the voltage is equal to the square root of the factor for multiplying the power input.
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