W dniu piątek, 29 marca 2019 08:46:37 UTC+1 użytkownik charles napisał: > > On 2019-03-28 10:09 p.m., johnk wrote: > based on teh RMS output (.707 of the peak) >
That would be 0,707 (1/sqrt(2)) voltage output on a resistive load. RMS power of a sine wave is 0,5 times peak power. I like to know maximum constant RMS output, because it tells me a lot about the amplifier and its capability. The peak power or music power usually lacks a definition (I can easily imagine a design that would allow for short pulse of higher power, but power supply/amplifier would fry up if it was to deliver this peak power for longer time). It is well known that for most time amplifier delivers a little percentage of its maximum power, but having continous Watts RMS into specified load rating is a very solid rating with solid definition. On the topic: it really bothers me that there is no definition of one voltage standard. It would make perfect sense to create a standard of a CD output, for example - a 2Vpp signal, in which +1V would correspond to maximum digital value DAC can give (65535 for standard 16-bit) and -1V would correspond to a value of 0. It would make designing amplifiers much easier - the sensivity would be always same. Currently I'm building a vacuum tube amplifier and I'm mad at the fact that I need to make the sensivity on 200mVpp level (my phone output), but most of other sources will have much higher signal. I think I'll need to go with a noisy method of applying extra resistor in series with volume potentiometer for the higher inputs... or apply the resistor and a "+20dB" switch that will short it. At least it is a vacuum tube amplifier, so noise will be an issue anyway. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/6418d010-db45-4c62-8f64-12bdc99a5520%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
