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Terry_VK5TM · 14th May 2021, 1:22 am

The only thing I would add is a noise filter after the on/off switch on the cabinet and before the rest of the circuit - 723's get quite annoyed with spikes on their supply input and tend to give up the ghost easily.

I used to make 723 based PSU's for a company here in Oz many moons ago and although the on/off switches they supplied were nice big chunky things, the did tend to put a nice spike on the line when switched.

14th May 2021, 1:22 am	#11
Terry_VK5TM Nonode Join Date: Oct 2010 Location: Tintinara, South Australia, Australia Posts: 2,339	Re: Big DC power supply The only thing I would add is a noise filter after the on/off switch on the cabinet and before the rest of the circuit - 723's get quite annoyed with spikes on their supply input and tend to give up the ghost easily. I used to make 723 based PSU's for a company here in Oz many moons ago and although the on/off switches they supplied were nice big chunky things, the did tend to put a nice spike on the line when switched. __________________ Terry VK5TM https://www.vk5tm.com/