So. I've (almost) got my Patsyface working. Turns out, I burned up a transistor - Q1. Or, I received a bad one -- but that's hardly likely. But it works otherwise. It sounds a bit like poo since I haven't really biased it and since, filling in for Q1, is a cheap-o $0.25 PNP. The only remaining technical problem is...
It doesn't power off of a 9v power supply (PP2+). Battery? Fine. PP2 - no dice. I think it may have something to do with my wiring, so here's the diagram I was following as well as the minor changes I made to it.
Here's the original:
(http://img833.imageshack.us/img833/1453/originalm.gif)
It has three different connections from "Board Ground" and two from 9v-. Since the Patsyface board only has one Board Ground connection and 1 9v- connection, I did this:
(http://img34.imageshack.us/img34/8333/modified.gif)
Did I goof?
You need a special cable for using a power supply. It has a white end. If your not using this cable, you will never have it work, and may damage the supply and/or the transistors.
Jacob
Quote from: jkokura on January 05, 2011, 08:33:43 PM
You need a special cable for using a power supply. It has a white end. If your not using this cable, you will never have it work, and may damage the supply and/or the transistors.
Jacob
Isn't this wiring diagram meant to avoid such a cable? (It even says use tip-negative only...)
*cough* bump?
No. Its meant for that wiring.
Jacob
Derp derp DERP! So sorry for being so dense! You had recommended this diagram in an earlier thread and I had assumed that it was meant to do something that it does not do. I had expresses (though not clearly enough, obviously) that I wanted to accomplisg a Patsyface build that would run on either a battery or a standard-polarity cable from my PP2. Then you said "Here! This is the diagram I used!" I thought that the diagram would allow me to do what I had requested but it looks like it does not. Well, pewp. I'll just whip myself up a reverse-polarity cable. No big deal.
Sorry 'bout that!
It will work with a regular 9 volt battery.