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Apple II & IIe: Power Supply Input Frequency Limitations

  • Last Modified: February 08, 2000
  • Article: TA38064
  • Old Article: 3
This article has been archived and is no longer updated by Apple.
The Apple II and IIe power supply is a switching power supply. It is designed to accept 107 to 135 volts from DC to 60 Hz.
It will also work at up to 400 Hz but this endangers a circuit which protects the supply from shorting to the point that the protecting circuit will not work.
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