Author: "Dr. David Kirkby" <david.kirkby@onetel.net>
Date: Tue, 28 Jun 2011 13:57:55 +0100
I'm looking at building a 4CX1000A amp, which I want to make as small/light as practical. Using an SMPS for the heater would go some way to this, whilst offering regulation, since my own supply varie
1) the PS should be soft start 2) Give more attention on insulation between primary .and secondary of SMPS transisformer, at least 10000V, if use in 4CX10000A. 3) Give more attention on receiver 's n
Look here: http://www.ametherm.com/inrush-current/megasurge-inrush-current-limiters.html They supply units up to 50A and have free samples available, but @ $6.20 qty 1 for the 50A part at Digikey why
One precaution for the surge limiter is that they operate on temperature rise. That means the limiter should not be oversized, or it will operate too cool and the resistance will not decrease to mini
Hi David, Been there, done that. http://qsl.net/wc6w/wc6wamps/index.html?fr63.html Though the amp didn't end up small nor lite! http://web.archive.org/web/20010825210138/http://www.angenent.org/W7IUV
Hunt around for a PSU that does current limit rather than shut down. Some have the option to switch between the two. Alternatively, add an external current limit circuit that's switched out once the
Author: "Dr. David Kirkby" <david.kirkby@onetel.net>
Date: Tue, 28 Jun 2011 23:03:15 +0100
Thank you. Though that needs another psu - I know one will probably be available, but it would be nice to make the heater supply self-contained. Very true, but there are two things to consider. 1) Th