Re: Identify transformer
开云体育Thanks Jim, I must be visually wonky. That is bad. I know I should write the numbers down and compare apples with apples, but… ??a real goof here. Yes it must be a real step-down. 150 VA seems reasonable. ? From: [email protected] [mailto:[email protected]] On Behalf Of Jim Whartenby via groups.io
Sent: Monday, December 2, 2024 3:16 AM To: [email protected] Subject: Re: [HallicraftersRadios] Identify transformer ? Don With a primary resistance of 85 ohms @ 12 Henrys and a secondary resistance of 0.6 ohms @ 0.055 Henrys how could this possibly be a step-up power transformer?? At 7 pounds, I would guess it would have a rating of perhaps 150 V-A.? So if the full secondary is around 24 volts, the current would be around 6 amps. Jim ? ? Logic: Method used to arrive at the wrong conclusion, with confidence.? Murphy ? ? On Sunday, December 1, 2024 at 08:07:04 PM CST, don Root <drootofallevil@...> wrote: ? ? Yes Walt ? I consider the turns ratio to be a primary characteristic of any transformer, but voltage ratio is usually much the same.. assuming I was guessing that you just measured it and have it on the bench. Halli seems to like? “52….” for a power transformer ???so that might be a clue , but it has no filament windings so ?? ?From the ?impedance ratios , it is likely a step up , ? ?Have a look at the saturation knee to see if it fits 120vac? ? From: [email protected] [mailto:[email protected]] On Behalf Of waltcates via groups.io ? Don,? did the photos come through on the original message. If they did, all the information I have is there. ? ?
? -- don??? va3drl |
don Root