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Switch popping

Started by yobleduwop, March 11, 2007, 05:19:08 AM

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yobleduwop

Hey guys im trying to switch some audio signals and i put 1k5 resistors to ground i think and they seem to still pop using a rotary switch, should i just keep upping the resistor size or is there anything else i can do to remove the pop, thanks Guys

R.G.

Switch popping in low impedance setups is nearly always caused by different DC levels.

Have you checked your signals for whether they have DC on them?
R.G.

In response to the questions in the forum - PCB Layout for Musical Effects is available from The Book Patch. Search "PCB Layout" and it ought to appear.

yobleduwop

Its actually an audio switcher the switch rca signals, is there a standard that all rca signals are?

R.G.

"RCA" is the coaxial phono connector. It is not tied to any specific signal. I've seen it used for moving coil phonograph signals at 1-2mV and for speakers, as well as TV RF signals. What matters is the equipment it's hooked to.

That being said, most of the phono connector is for consumer audio, with typical levels of 0.775Vrms.
R.G.

In response to the questions in the forum - PCB Layout for Musical Effects is available from The Book Patch. Search "PCB Layout" and it ought to appear.

yobleduwop

It will be used generally with Cd players or Dvd players and sometimes pc's and laptops if that helps at all