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DonThe fusing current for 18 AWG wire is 83 amps.? This is the point where the copper wire is hot enough to melt.? I found this info

Jim yes mostly I guess you are responding to Same sort of goes for radios of old. I blame the NEC++ for allowing a 0.35 amp radio to be *protected* by the 15 amp house fuse Quibbling

Rick they have oodles of SRS. which exact one ? maybe a link so we can see what you recommend … don Sent: Friday, July 12, 2024 12:11 PM To: [email protected] Subject: Re:

You have a pretty good point Jim, It appears that this could be a pretty simple solution to a problem,? but only if it is actually "the problem" but I'm not seeing where "soft" start solves it. An

DonWhatever is used as a circuit protection device, it is there to protect the hidden wiring from the distribution panel where the fuse or circuit breaker is located to the outlet, it is not used to

First, sorry for the email that flew of my bit machine, I went on line and deleted it. Ed I guess we are OT a fair bit, but you and Jim raised stuff related to “turn-on” situations. As I

Your last paragraph brings to mind all the issues we encountered at the railroad when we began to try to improve on the original systems in our older equipment. We were doing in house overhauls and

I am not sure what the problem is that is causing this need to limit this mysterious charging current.? What is causing it and why didn't the original designers notice it back then and come up with a

Hi Don, I've used a soft start module for a heavy duty power supply but not for my HT37 which is one of my retirement projects. I've bought these modules off ebay but they are designed for 220VAC to

Lou, how much$. you have some in operation? Sent: Tuesday, July 9, 2024 4:44 PM To: [email protected] Subject: Re: [HallicraftersRadios] HT-37 transformer failure due to rapid

Jim I agree , but I know one absentminded driver that often does not know to “slow down” before turning. Maybe if they had put a HEFTY detent between STANDBY and OFF it would not happen so

Why not just turn the switch, per the caution in the?HT-37?instruction manual, and avoid the problem?? If soft start and inrush were indeed a problem either one would have been addressed eons

Hi all, What about combining a zero crossing switch with a soft start circuit giving a lower input voltage to the transformer for a handful of cycles before switching to fill

Halden, now that everybody has been silent, “would an SSR that turns on at zero voltage and turns off at zero current put the core back to zero every time and prevent current

Thank you, Walt!! You are amazing with a ton of knowledge! Thank you, Mike W5CUL From: [email protected] <[email protected]> On Behalf Of waltcates Sent: Tuesday,

Just completed a rewrite of the SR-400 series repair manual. This update fills some holes in the transmitter fault analysis which includes a transmitter troubleshooting flow chart. Go to wd0gof.com

JohnDownload the Stancor transformer catalog from?http://www.tubebooks.org/file_downloads/stancor_1952.pdf Check top of page 12 for a formula to calculate the turns ratio for the interstage

John, if the existing one has been declared “grabage” you might assume that the failure is very near the coil end[s] and see if you can find the break and measure the ohms. And maybe be lucky and

A little more detain on this transformer. I found the code A-4931* on its side. I found some Standcor catalogs online with A-47xx numbers, but not A-49xx. * corrected. original post erroneously

I have not posted for a little while for various reasons but have returned to the SX17 project in the last few days and followed up on the previous suggestions. I am reasonably certain that the mains