Re: 20-60A adjustable ~200vdc current mode buck design
- From: "John Barrett" <ke5crp1@xxxxxxxxxxx>
- Date: Tue, 20 Feb 2007 03:57:37 GMT
<osr@xxxxxxxxxx> wrote in message
news:1171905102.220242.45790@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
dude, your insane trying to build a 6Kw. lamp supply from scratch,
those lamps blow if ya sneeze.
I know I just blew one trying to build a 2 kW version. I have one
left.
contact bruce @ contact @ second source lasers do com, he has two
eski lamp supplies in stock. BTW the series 6 pins and two connector
bodies you asked for shipped yesterday.
Steve Roberts
Thanks for getting those out, Steve !!
and OF COURSE I'm insane.. even more so than you think because I need 8KW !!
(7mm ID bore needing 195-205 volts !!)
However -- the design is progressing -- I've got a model up and running that
(without current regulation) stabilizes at a very smooth 48 amps into the
tube (presuming 5 ohms tube resistance) after startup... its got a bit more
ripple voltage than I would like, and its spiking the AC input hard, but at
least I got the soft start and main current path worked out
having a real problem with the current sense -- trying to use the switch
model to trigger when the ISense voltage passes a preset threshold, but I
must have it modeled wrong some how because it is not switching when the
tube current spikes. (I know -- its a kludge, but I'm too lazy to add in the
full pwm driver until I got everything else close to working as intended)
I'll prolly see what I can do about putting at least a comparator in and see
if that helps
.
- Follow-Ups:
- Re: 20-60A adjustable ~200vdc current mode buck design
- From: John Popelish
- Re: 20-60A adjustable ~200vdc current mode buck design
- References:
- 20-60A adjustable ~200vdc current mode buck design
- From: John Barrett
- Re: 20-60A adjustable ~200vdc current mode buck design
- From: panteltje
- Re: 20-60A adjustable ~200vdc current mode buck design
- From: bernado
- Re: 20-60A adjustable ~200vdc current mode buck design
- From: John Barrett
- Re: 20-60A adjustable ~200vdc current mode buck design
- From: osr
- 20-60A adjustable ~200vdc current mode buck design
- Prev by Date: Re: OT: Gravity explained
- Next by Date: Re: 20-60A adjustable ~200vdc current mode buck design
- Previous by thread: Re: 20-60A adjustable ~200vdc current mode buck design
- Next by thread: Re: 20-60A adjustable ~200vdc current mode buck design
- Index(es):
Relevant Pages
|
