> http://www.piclist.com/techref/microchip/devprogs.htm#pocket > is the general link and > http://www.piclist.com/images/com/bubblesoftonline/www/http/pocket/pocket/po > cket_pdf/schematic.gif > has the schematic... > > ...oh boy... This is a good education... there are different pin outs for > transistors even? wow... glad I asked. They only have three leads, so how far off could it be? I had a quick look at the schematic, but it isn't obvious in how much current the transistors will pass when on, and what the voltage drop accross them will be. All the voltages seem to be limited to 18V, so that will be no problem for jelly bean transistors. Judging from the resistor values near the transistors, most of them don't seem to pass much current except maybe TR4 and TR3. However, some of the wires have names and these names were too small to read, so I can't tell where they go. I'd be surprised if anything exceeds 100mA, but can't guarantee that. You should really ask Tony. If all the currents and power dissipations are small enough you should be able to replace all the NPNs with 2N4401 and the PNPs with 2N4403 which are real cheap and available. Yes, the pinouts can be different between different transistors. If the transistor has wire leads like a TO-92 package, you can usually rotate the part and bend the leads to get them in the right place. Just make sure you tell people how to install it if it's not how it's shown on the silkscreen. ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu