And too quiet! It would not be advisable to operate a linear supply in close proximity to the K3 or the K2. The resulting unwanted modulations have been discussed previously.
Jerry AI6L -----Original Message----- From: Bob McGraw - K4TAX [mailto:[email protected]] Sent: Sunday, April 18, 2010 3:02 PM To: Doug Faunt N6TQS +1-510-655-8604 Cc: [email protected]; [email protected]; [email protected] Subject: Re: [Elecraft] KPA500 I'll pass on linear supplies. Too heavy, too inefficient. 73 Bob, K4TAX ----- Original Message ----- From: "Doug Faunt N6TQS +1-510-655-8604" <[email protected]> To: <[email protected]> Cc: <[email protected]>; <[email protected]>; <[email protected]> Sent: Sunday, April 18, 2010 4:56 PM Subject: Re: [Elecraft] KPA500 > It's not a switcher. As is common for linear power supplies (and not > uncommon for switchers), there's an input voltage selector as part of > the input power connector/fuse/switch combo. > > Since the power transformer is 15 of the 22 pounds weight, one of my > thoughts was to ship that part (or an extra) ahead when traveling, and > when I asked was told that currently it takes about 15 minutes to > install, but that time might be cut. > > 73, doug > > From: "Bob McGraw - K4TAX" <[email protected]> > Date: Sun, 18 Apr 2010 16:24:43 -0500 > > Any switching supply today and one that's "worth it's salt" should > operate > satisfactorily from 100 VAC to 250 VAC. So 120 VAC or 230VAC should > not be > of conern. > > 73 > Bob, K4TAX > > > ----- Original Message ----- > From: "Don Wilhelm" <[email protected]> > To: "David Ferrington, M0XDF" <[email protected]> > Cc: <[email protected]> > Sent: Friday, April 16, 2010 3:40 PM > Subject: Re: [Elecraft] KPA500 > > > David, > > > > Because not all have hamshacks that are wired for 220 volts. If the > > space was not wired specifically for hamshack use, there is likely to > be > > only 120 volt receptacles available. Up to 1000 watts draw (500 > watts > > with 50% efficiency) on a normal 120 volt 15 amp circuit is practical, > > but attempting to run more than becomes marginal. > > > > 73, > > Don W3FPR > > > > David Ferrington, M0XDF wrote: > >> I'm intrigued, obviously we'd look for 220v over here, but why not > 120v > >> in US? > >> 73 de M0XDF, K3 #174 > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
