Gents - I completely spaced using existing CATV gear - I have a pallet of Motorola/GI minibridger housings with just the power modules in the lid.
I'll see what I can do to test this out over the week and try to report back - Pretty sure I can fit an entire remote receiver in to a MB housing... Thanks again for all of the suggestions! 73, AJ, K6LOR On Sun, Feb 14, 2010 at 8:06 PM, Eric Lemmon <[email protected]> wrote: > > > Kevin, > > Not to worry. The great advantage of a switching power supply is that it > will operate on any AC or DC input, of any frequency or waveform. A linear > power supply, in stark contrast, must be designed for the particular input > voltage, frequency, and waveshape. The CATV power supplies are probably > switchers, for precisely that reason. > > > 73, Eric Lemmon WB6FLY > > > -----Original Message----- > From: [email protected]<Repeater-Builder%40yahoogroups.com> > [mailto:[email protected]<Repeater-Builder%40yahoogroups.com>] > On Behalf Of Kevin Custer > Sent: Sunday, February 14, 2010 5:43 PM > To: [email protected] <Repeater-Builder%40yahoogroups.com> > Subject: Re: [Repeater-Builder] 85VAC to 12 VDC? > > Eric Lemmon wrote: > > AJ, > > > > The obvious solution is to connect a commercial switching power supply- > > definitely NOT a linear supply- across the AC source. Most Samlex, > Astron, > > and DuraComm switchers can work wonders in such an environment, where > > conventional linear power supplies will surely fail. Don't use a larger > > (higher capacity) power supply than you really need; in this case, larger > is > > not better! > > Be careful here... The output of a CATV power supply is not a sine > wave. I'm not sure how these commercial switchers would react to the AC > available from the CATV line. Certainly while switching supplies are > used in the CATV industry to power the amplifiers, nodes, and telemetry, > I don't know if they are made exactly like the ones fed from commercial AC. > > It would be much better if he uses a power supply intended to be > connected to the CATV line. These can be scavenged from working surplus > CATV equipment. Several of the ones I'm familiar with can supply an amp > or two at 24 VDC, and that used to feed a regulator or charging circuit > for 12 volts. > > Kevin > > >
