Looking for two DEC H445 power bricks for PDP 11/40 project

I had a problem with brick power supplies a number of years back. I found an issue that caused them to fail. I had about ten of them on the same power switch. You'd think this would not be an issue but it is. You see it works like this, each one had a transformer in it. When you disconnect the power, with a switch, each of the transformers often has energy left in the cores. Normally for just one supply, this isn't an issue. When you have a bunch of these, only one supply absorbs all of the energy. When it does, it will blow some part of that supply up. On the ones I had, it'd take of the negative rail. I put a MOV on the power rail and didn't have any more issues with power cycling. Dwight ________________________________ From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Bill Degnan via cctalk <cctalk at classiccmp.org> Sent: Monday, September 17, 2018 12:07:22 PM To: p.gebhardt at ymail.com; General Discussion: On-Topic and Off-Topic Posts Subject: Re: Looking for two DEC H445 power bricks for PDP 11/40 project here is a photo of some of the failed regulators I have on hand that I have pulled from production over the years: https://pbs.twimg.com/media/DML8O8dW0AISX5m.jpg On Mon, Sep 17, 2018 at 3:05 PM Bill Degnan <billdegnan at gmail.com> wrote: