A local ham has a power transformer and I am considering using it to power a 8877. I sent the serial numbers to the manufacturer, Johnson Electric Coil Co and they answered that the xfmr was made in
If it is not potted and has been sitting in a damp place it may have absorbed moisture, which could cause insulation breakdown later. I am not sure what the best way is to dry it out, but someone wil
Vic: What is the transformer part or model number? Does the owner know what apparatus it came out of? - Jim WB6BLD _______________________________________________ Amps mailing list Amps@contesting.co
You can bake it in a 175-200 degree oven for 6-12 hours and that will dry it out. Do this while XYL is out. Barring that get a pound or two of silica gel from a craft store and place it and xfrmr in
I have a request in to a fellow who may very well know the details on that transformer. If it is a high voltage transformer from a broadcast rig I suspect it is at about the 500 to 1000 watt level, j
An alternative way to get the heat in it I've used without ruining my stove and/or marriage is to short the secondary and apply primary voltage through a variac. Wind the voltage up very slowly and
This was sent hours ago but was returned due to too many recipients. Carl -- Original Message -- From: "Carl" <km1h@jeremy.mv.com> To: "Scott McGrath" <mcgrath@fas.harvard.edu>; "Jim Tonne" <tonne@co
Hi Tom, A pretty easy and good way to dry out a transformer is simply to apply low voltage DC to one of its windings, to warm it up from the inside. A transformer for a linear amp might need somethin
Man am I glad this thread came up. I just moved a big transformer I bought used in 1976. It's been sitting all this time waiting for my 4-1000 project. I'll bake it when the XYL is out. What further