Newsgroups: rec.audio.tech Subject: Re: output info needed References:<[email protected]> "Saxon Liw" writes: > "You Know Who ~" wrote in message > news:[email protected]... > > > > Hi > > I am testing an audio amp that draws power from the joystick/gameport > of an > > audio card. > > Does anyone by chance know the output voltage (and maybe even a pinout > > diagram). > > thanks > > You might have more luck with a USB port. There might be a voltage but I > don't think a joystick port can supply all the current the amplifier > would need. I don't know what is official limit of joystick power current that can be taken. The physical connector itself should handle up to few amperes. Depends on card implementation how much it actually can handle. Staying below 1A would be quite safe for most cards I have seen. In older cards joystick ports tended to be directly connected on their +5V pins to +5V power supply rail which can supply fair amount of cable. Even enough to burn a cable if short circuit to ground happens! > Even a USB port might not be able to deliver that amount of > current. the power capabilities of USB port are quite limited. It can output +5V. Normally if I remeber right the current was 100 mA or 500 mA depending on operation mode. > You can, however, biuld one which takes power from the disk > drive power plugs which is capable of delivering high current 5v and > 12v. That's good place to take power. -- Tomi Engdahl (http://www.iki.fi/then/) Take a look at my electronics web links and documents at http://www.epanorama.net/