There wouldn't be much too it. all you need would be a hand full of resistors, using ohm's law to calculate the values. The values would be calculated at the max current the TRx series would draw.
On would need to load the 6.3 v filament down to the same current as the tubes, if you don't the unloaded transformer would produce more voltage than normal since it's not powering the tubes. a couple of cheap LED digital panel mount meter could be used to monitor the voltages, plate, screen, and bias likewise a meter could be used to monitor current on the plate supply. I don't feel it would be necessary to monitor bias current or screen voltage current either. it would be an interesting project, that would make checking the supply quick. A few test points for an 'oscope to monitor ripple would be icing on the cake later mike, wb8vge On Nov 27, 2012, at 10:21 AM, Eugene Balinski wrote: > I would be very interested in seeing the schematic.. > > 73 > > Gene K1NR > > PS I would not mind having one to check my Collins supply > either : - ) > > > On Mon, 26 Nov 2012 11:50:11 -0500 > Al Parker <[email protected]> wrote: >> hi folks, >> Some yrs ago there was an article on building a test >> setup for Collins p.s.'s. I think it was in one of the >> Collins collector magazines, I can search it out. I came >> into possession of one of the units, and have made cable >> adapters for the AC-3/4's, and I think the HP-23's also. >> It is for voltage only, and did not include a load test, >> but I have been thinking of adding that to mine. >> 73, >> >> Al, W8UT >> www.boatanchors.org >> www.hammarlund.info >> >> "There is nothing -- absolutely nothing -- half so much >> worth doing as simply messing about in boats" >> Ratty, to Mole >> >> On 11/26/2012 11:30 AM, Hudson, John@CalEMA wrote: >>> That would be a useful test jig. >>> >>> >>> John N. Hudson III, Communications Coordinator >>> 4050 Taylor St, MS 243 >>> San Diego, CA 92110 >>> 6192509063 Cell >>> >>> >>> >>> >>> On Nov 24, 2012, at 1:37 PM, "Eugene Balinski" >> <[email protected]> wrote: >>> >>>> All, >>>> >>>> Just wondering if anyone has put together an AC-4 >> load >>>> or test bank ? If so, could you share the plans ? >>>> >>>> I would like something that would allow one to connect >> the >>>> AC-4. switch on the AC, and measure the various >> voltage >>>> levels on test point, and perhaps even load the >> supply. >>>> >>>> Thanks in advance, >>>> >>>> 73 Gene K1NR > > --------------------------------------------------------------------- > Web mail provided by NuNet, Inc. The Premier National provider. > http://www.nni.com/ > > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist > _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
