English Amiga Board - View Single Post - need help my A4000 won't start with new A4000 ATX PSU adapter

Stedy · 03 September 2019, 00:52

@klx300r

What make and model of ATX power supply are you using?
I can't think of any logical reason for it not to work.

@solarmon

The A1000 PSU spec specified that the input frequency of the Tick signal, derived from the AC mains should be +/-10% and that it only works on the positive half of the cycle. The european and UK mains frequency is 50Hz +/- 0.5Hz.

My tick circuit used in the adaptor provides a 50Hz/60Hz with an accuracy of +/-0.1Hz at 50/50 duty cycle and works without issue.

03 September 2019, 00:52	#18
Stedy Registered User Join Date: Jan 2008 Location: United Kingdom Age: 46 Posts: 733	@klx300r What make and model of ATX power supply are you using? I can't think of any logical reason for it not to work. @solarmon The A1000 PSU spec specified that the input frequency of the Tick signal, derived from the AC mains should be +/-10% and that it only works on the positive half of the cycle. The european and UK mains frequency is 50Hz +/- 0.5Hz. My tick circuit used in the adaptor provides a 50Hz/60Hz with an accuracy of +/-0.1Hz at 50/50 duty cycle and works without issue.