Did you say "cheap 50 watt audio amp chip?" How about a pointer? John Ferrell W8CCW "My Competition is not my enemy" http://DixieNC.US ----- Original Message ----- From: "Dave Lag" To: "Microcontroller discussion list - Public." Sent: Monday, May 08, 2006 7:52 PM Subject: Re: [EE] switching audio signals 50W > alan smith wrote: >> OK audio guys..... >> >> I have an amplifier that can deliver up to 50W of audio per channel, >> and need to switch on and off differnent channels outputs depending on >> some control inputs. I was thinking of relays but that rather a large >> real estate usage, so wondering about just using some of those small >> solid state photoMOS relays, like those used in telco applications. >> >> Its a one-off project, so production costs aren't of a real issue other >> than I do want to keep costs down of course. >> >> >> --------------------------------- >> Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great >> rates starting at 1¢/min. > > Considering the cost of decent relays and the low cost of audio amp > chips I would use a power chip per channel. If you only drive one at a > time your power supply is still small. > > D > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist