Very interesting thing I've found out about the RSA Protector - Page 2

yeah with the added info it's clear it has nothing to do with the caps discharging. but these 2 examples above are nothing, batteries are themselves a type of capacitor, it doesnt have to be a bad quality cap for this sort of thing, in fact there is a new breed of supercapacitors that have been developed for short term high current applications, like defibrillators and other portable devices. in fact these are very high quality capacitors in many instances, just very large capacity

yep, well illustrated Justin, exactly what I was saying, but put forth in a much more concise manner

^^as I said I don't know.I was just replying to the two posts above me that mentioned capacitors.I am still a freshman in Enginerring and when I take electric engineering as my major,maybe I will challenge your posts

hehe, I wasnt correcting or challenging you mate, was just adding info and I missed my main point I meant to make too. they (supercapacitors) are often used in the field as kinda short term, high current batteries. there are capacitors of all sorts, for all manner of applications, some like bypass caps are designed for small capacity and speed. Once you are an engineer i'm sure there will be plenty you will challenge and I welcome it, you will have to unlearn a few things if you want to maintain an interest in high end audio. engineers dont have all the answers either and will tend to hit brick walls in some fields more often because of working within such rigid limits. IMO its wise to live in both spheres, without ignoring one or the other.

Edited by qusp - 5/6/10 at 2:25am

I just realized, the signal you're hearing probably goes through the ground connection.

Edited by semisight - 5/6/10 at 2:04am

no it doesnt; as has been covered, it goes through the signal path because the circuit uses an inverting feedback loop; so there is a path (through a small resistor) that bypasses the opamp, which would normally be a closed switch at this point. the return path, as usual is on the ground

Edited by qusp - 5/6/10 at 2:30am

Are you sure? That would only hold true if the amp used inverting feedback all the way through; amps like the pa2v2 and cmoy (admittedly simple) don't have inverting feedback, and if there are any voltage followers anywhere in the design that would kill the signal. Also, I'm sure the input resistors are above the resistance at which audio could easily pass through. I just don't see it working like that .

 

Are there any schematics available? Probably not, but it doesn't hurt to ask.

for this OP example....ermm.... the protector doesnt actually have a ground path to the headphones, it has bridged/balanced output. 

Edited by qusp - 5/10/10 at 3:10am

And so much attitude

:redface:

I really need to stop coming on here at the end of a long long day. the attitude above was unnecessary, I agree. wasnt actually meaning to sound like that, but was a very frustrating day. I guess it shows

Edited by qusp - 5/10/10 at 2:51am

I've experienced this with many amps.  Just make sure you don't flick on the power switch with volume still at max!