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Quote:
I unsoldered the resistor and the regulator is putting out a solid 5v now, but I don't know whether its load handling capacity has been damaged in any way. I may swap it out just to be safe. MITS used that bypass resistor across the regulator on their 4k board too. I don't know much about circuit design, but doesn't that kind of negate the purpose of a regulator? I assume that when the circuit is loaded normally all the current flows through the regulator, and the resistor comes into play only if a heavy load is added (say, a couple of 16k memory boards), but then what ensures that the voltage stays constant? I guess when you're testing an unloaded board with this kind of power regulation, it's probably a good idea to put some kind of load on it. Quote:
I'll put my 16k board in later and try to download basic. It should work, it runs fine on the vintage machine. Geoff. |
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