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Originally Posted by wolf1419
I'll do some more testing of components just to get a good feel and see if I can make the relationships with the schematic. I did notice that some resistors read the same R both ways, some differ, and that the highest resistance reading is closest to the actual value of the resistor. As long as I don't find "opens", or "shorts" through components in either direction and get values that are reasonable vs. schematic values while "on the board", the components are not detrimental/fried.
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Have you worked out why the Resistors i pointed out measure differently?
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Originally Posted by wolf1419
My next area of misunderstanding relates to all the seemingly "multiple paths" of circuits. I'm trying to follow signal paths, but they just look like they go in many directions at once(like many vehicles making a journey at once vs. one vehicle following a certain route). I'm not able to follow the actual "flow" of these circuits. I'm not following the "logic" of signal/current, making it difficult to actually "see" where a problem may be in any part of the circuit. there seems to be so many paths all at the same time. Give me a "clue"..
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Don't expect to trace the signal flow through this, if you whish to learn how that works i'll dig through my notes from uni and find somthing a less complex.
If you really want to work out how this works consider this:
IC1B is an inverting amplifier. R58 and C29 are there to control its gain and frequency response and should be considered part of this amplifier stage.
R78,R83,D1 and D2 form bias volatges for TR5 and TR6 this voltage is constant.
Since the Bases of these two transistors are held at a constant voltage it follows that their emmiters are.
Now if the voltage at the input to the circuit changes what happens? (Note R100 is also i feedback resistor and should be ignored here)