Search found 236 matches
- Tue Jan 04, 2005 10:18 pm
- Forum: General Discussion
- Topic: Automatically switching 2 audio signals based on input l
- Replies: 9
- Views: 6246
Re: Automatically switching 2 audio signals based on input l
Okay, here's where I ask for help.<p>This is what I have so far, it's basically the audio detection module of the circuit:<p> http://www.shootdashizz.com/images/audioswitch.jpg <p>V1 is the PPC audio source. The 1k resistor after the opamp is just a dummy resistor for simulation purposes. R2 is just...
- Sun Jan 02, 2005 9:11 pm
- Forum: General Discussion
- Topic: What's everyone working on?
- Replies: 52
- Views: 39302
Re: What's everyone working on?
Let's see...what am I working on? I'm working on a device for my car that will switch between my music and GPS voice prompts from my pocket PC playing over my car speakers <p>Not sure what I'll take on after that...
- Wed Dec 29, 2004 9:21 am
- Forum: General Discussion
- Topic: Automatically switching 2 audio signals based on input l
- Replies: 9
- Views: 6246
Re: Automatically switching 2 audio signals based on input l
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Dale Y: Sounds like a plan to me!<p>No need to detect music level though, just PPC level. The PPC needs to take control whether the music is blaring or off.<p>Relays might be to...
- Wed Dec 29, 2004 1:40 am
- Forum: General Discussion
- Topic: Automatically switching 2 audio signals based on input l
- Replies: 9
- Views: 6246
Automatically switching 2 audio signals based on input l
Basically, I need to switch 2 audio inputs based on which one is currently "active", and I need to do it automatically.<p>More in depth, here's the actual situation: I was given a GPS receiver for my Pocket PC for Christmas. The Pocket PC speaker isn't loud enough for me to hear over road ...
- Thu Jul 15, 2004 7:30 pm
- Forum: General Discussion
- Topic: Reducing power surge on AC adapter
- Replies: 8
- Views: 4337
Reducing power surge on AC adapter
Quick and simple question:<p>I have an AC adapter for a laptop that's killing a 12V inverter. The power consumption of the adapter is well within specs of the inverter, yet the inverter is overloaded and shuts off due to an on-power surge.<p>How can I limit this surge?
- Thu Jan 08, 2004 12:37 pm
- Forum: General Discussion
- Topic: volts,amps, watt question
- Replies: 2
- Views: 2134
Re: volts,amps, watt question
And remember, with the wall wart you can draw a higher current for a short period of time without damage.
- Mon Jan 05, 2004 12:34 pm
- Forum: General Discussion
- Topic: High Power Amps - guitar, car, PA, etc.
- Replies: 14
- Views: 6963
Re: High Power Amps - guitar, car, PA, etc.
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Glenn Johnson: the dreaded crossover distortion that seems to be the only attractive thing with a pure Class A. <p> <hr></blockquote><p>Also remember that class A amps are mainl...
- Sat Jan 03, 2004 10:35 am
- Forum: Computer Programming
- Topic: Building a website (hope this is the right place)
- Replies: 19
- Views: 12099
Re: Building a website (hope this is the right place)
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Dale Y: Classes D and above - various digital synthesis schemes. (I don't even try to remember which-is-which.) There are pulse width modulation (PWM), pulse period modulation (...
- Sat Jan 03, 2004 10:28 am
- Forum: Robotics
- Topic: Laptop LCD and OOpic R
- Replies: 3
- Views: 4434
Re: Laptop LCD and OOpic R
Theoretically, you should be able to make your own controller card on some displays, but that'd just be a stupid thing to try to do
- Sat Jan 03, 2004 10:24 am
- Forum: General Discussion
- Topic: TV as an Oscilloscope
- Replies: 13
- Views: 6418
Re: TV as an Oscilloscope
Michael - look at the links above.
- Sat Jan 03, 2004 10:17 am
- Forum: General Discussion
- Topic: High Power Amps - guitar, car, PA, etc.
- Replies: 14
- Views: 6963
Re: High Power Amps - guitar, car, PA, etc.
Just thought I'd add that a true Class A amplifier will realisticly be much less efficient than 50%.<p>I know people that have built some class A amps that are lucky to get 10% efficieny.
- Sat Jan 03, 2004 10:12 am
- Forum: General Discussion
- Topic: White LED strobe
- Replies: 40
- Views: 16424
Re: White LED strobe
I'm not going to go into the whole technical aspects of the project.<p>What I want to say is that a conventional strobe is not instantly full brightness and then off again as an LED is. An LED does not take nearly as long as a flash tube to "light" to full brightness.<p>Jolly Roger, the re...
- Sat Jan 03, 2004 9:50 am
- Forum: General Discussion
- Topic: pioneer parts id?
- Replies: 5
- Views: 2796
Re: pioneer parts id?
I can't remember where at all, but I've found an internet resource for those types of chips before (multichannel amp, STRXXXXX). I serviced a car audio cd receiver that had some chip like that and needed a new one (casing was cracked open, leads literally torn in half).<p>Anyway, I'll search around ...
- Fri Oct 03, 2003 11:46 am
- Forum: General Discussion
- Topic: My Optrex LCD
- Replies: 2
- Views: 2030
Re: My Optrex LCD
Any help?
- Fri Oct 03, 2003 11:43 am
- Forum: General Discussion
- Topic: 1981 Deloren
- Replies: 2
- Views: 2342
Re: 1981 Deloren
<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by josmith:
I think you need to adjust the flux capacitor.<hr></blockquote><p>I concur
I think you need to adjust the flux capacitor.<hr></blockquote><p>I concur