The distinction between transformers, power supplies and switch mode power supplies is as follows: 变压器/电源/开关电源的区别:
– for transformers, there is no change in frequency.However,transformers(e.g constant voltage transformers) may have an internal resonance frequency not exceeding 30 kHz; 变压器的频率是不变的.但其可能有一个不超过30K内部的共振频率
– for power supplies, the internal operational frequency and waveform are different from the supply frequency and waveform, and the internal operational frequency does not exceed 500 Hz 电源的内部工作频率及波形与主线的频率和波形是不一样的, 其内部频率不超过500
– for switch mode power supplies, the internal operational frequency and waveform are different from the supply frequency and waveform and the internal operational frequency exceeds 500 Hz and does not exceed 100 MHz 。 开关电源的内部工作频率及波形与主线的频率和波形是不一样的, 其内部频率超过100M |