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There are some tips on biasing,etc on this site:http://www.rason.org/Projects/bipolamp/bipolamp.htmAnother place to look is the E-Book at All about Circuits.
Quote from: electronics technician on March 06, 2014, 01:23:51 am im frustrated with this circuit i have been on this for almost a month now trying different combinations of pinouts and still no working projectTo get this sorted, you're going to have a very long, careful and methodical troubleshooting session. Make some coffee, you'll be needing it.Type the part numbers for the transistors you have into Google, find the data sheets, and check the pinouts. There is no short cut or substitute for this. Assume nothing.If you can, remove the transistors from your board and replace them with brand new ones, correctly connected. This will help ensure you're not wasting time trying to build a circuit with parts which have been damaged by incorrect use.Go round your circuit with a multimeter, and check what voltage exists at every point.EVERY point.When you have that information, post up a clearly annotated schematic, and maybe someone will be able to give you some pointers as to where faults exist, or some further experiments to try. A detailed, methodical analysis will look good in your report even if the circuit never works, so this is anything but wasted effort even if nobody replies at all.Post a photo of your board. Make sure it's clear, sharp, and has good lighting.Without a crystal clear picture of what your board looks like and what voltages exist where, it's impossible to debug it remotely.
im frustrated with this circuit i have been on this for almost a month now trying different combinations of pinouts and still no working project