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My 2c: put a diode of sufficient current rating in series with the bulb that blows. Don't do all. Just the one that blows. If it blows real soon again, put a second diode in series. I wouldn't do more than 2 in series. You can do it in a semi-temporary way without cutting wiring by using spade...

I had the same thinking as you many years ago already. So I just did a search to look for an example. One search result yielded Stinger Audio MT-2000.1 car amp. When running as a monoblock at 40Hz it is bench verified to produce (rms) 2000W@1ohm, 1600W@2ohm, 900W@4ohm. It costs $200 retail on...

So by yhe way if you get a 1A mains isolation transformer, then it's going to be a 220VA transformer. A 100VA isolation transformer is going to give you around 0.5A on ypur vintage amp primary. That is quite a lot and could deliver tons more amps on the vintage amp's secindary. That will...

Which smsl is that? The D10? https://www.amazon.com/AOSHIDA-D10-Headphone-Resolution-Black/dp/B0DB1VJJTF

On a (let's say) NAD3020 I would expect to see a mains transformer going to two big capacitors. Those caps are in series and where they connect in the middle, is definitely one "ground" point to place a scope ground lead. Hope that helps a bit.

I just remembered something about vintage amps. They used to provide courtesy AC outlets on the back panel for tuner, tapedeck, etc. So, your hand could accidentally touch AC Live while working inside that amp. Your microwave transformers will save you in that case, provided you only touch one...

If you're testing vintage amps they already run off a mains transformer so you're already electeically isolated from AC mains live via the magnetic coupling of the amp's own mains transformer. Your microwave-transformer idea would be good to isolate you from AC mains live wire in the scenario of...

FWIW here's a lovely video on changing that anode

It would be lovely if an led or squealy buzzer could be activated once the sacrificial has depleted. Kind of like how the more expensive cars alert the owner when brake pads are nearly worn out.

And maybe you should consider soldering the high voltage connection to avoid unnecessary sparking. Plus proper high volrage insulation thereafter which you can probably also get from the microwaves.

I love your idea. In my opinion it will work, up to lets say 80% of the microwave's power rating. And I would add that for best and safest results use two identical transformers from two identical microwaves.

Who sells these sacrifocial anodes in Cpt? Brights?

R149 FYI. Thanks for sharing it looks like a good thing. This Ugreen company is starting to impress me with some of their offerings.

An electrical heating element is 100% efficient in converting electrical energy into heat energy. A decent heat pump is capable of 200% efficiency when relating its electrical energy consumption to its heat energy output. Since there will be thermal losses in the re-circulation path of the...

I second that - only to add that the one I got a few years ago was from Gadget Time. Computer Mania is all over the country so if they still stock it you should be good to go.

That is so well done. I'm so impressed. I have thoughts. That looks production ready.

Is that the 21inch sub on the far right?

Maybe try this on the front panel On the amp, use the input selector knob to select (for example) CD Press the "EXT. IN." button on the amp to select the external input. On the amp press the "INPUT MODE" button to cycle through the options AUTO->PCM->DTS (my guess for CD is that you want to...

If you had Ytb videos of the stuff you make I'd watch them to try learn. You must have good technique. I only have elbow grease. That steel structure looks really good. It must be so personally satisfying to look at it afrer all the graft is done.