swood@vela.acs.oakland.edu (Scott Wood) (08/02/90)
I have not done any tinkering in a while, and I would like to build me a simple little monitor for my keyboard with say a 5 Watt out put at 8 ohms for a high Z headphone style input. Any one have such a thing on hand swood -- Go ahead... FLAME ME!!!! | swood@vela.acs.oakland.edu I am getting used to it. | swood@vela.acs.oakland.edu Home-40 | swood@nucleus.mi.org The Notorious Tre' | Scott Webster Wood
tomb@hplsla.HP.COM (Tom Bruhns) (08/03/90)
An LM384 (about $2 from DigiKey and others) will do 5 watts, given a 24 volt power supply, 3 caps, a resistor, and a pot for a volume control. Radio Shack also has some easy IC answers to your problem. Check out a National Semi IC manual that covers audio ICs for more possibilities (e.g., using a two-channel chip in a bridge mode so you can get the power using a lower supply voltage...)
adam@media-lab.MEDIA.MIT.EDU (Adam Glass) (08/03/90)
tomb@hplsla.HP.COM (Tom Bruhns) writes: > An LM384 (about $2 from DigiKey and others) will do 5 watts A LM386 would probably suffice. While it can only put out about half a watt, you might be surprised how loud that is. If you're using this to amplify audio for headphones, half a watt would most certainly suffice. Adam