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The Basement
PCB shop for hobby projects?
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<blockquote data-quote="John Roberts" data-source="post: 96548" data-attributes="member: 126"><p>Re: PCB shop for hobby projects?</p><p></p><p></p><p>Voltage drop across a sense resistor would indicate polarity of current. </p><p></p><p>Hall effect, is magnetic field responsive. Does that involve a one turn coil like a current probe? I guess current flowing in a straight wire generates a magnetic field.</p><p></p><p>I recall putting a hall effect electronic points replacement on my motorcycle back in the '80s. The problem with the magnet on a disc, was that you could run the two stroke motor backwards. Of course you couldn't crank it that way but stuff happens. The company sent a replacement disc with two magnets placed so it couldn't start/run backwards.</p><p></p><p></p><p>Yes, I am a convert to the dark (digital) side... you can do "almost" anything you can imagine. </p><p></p><p>JR</p></blockquote><p></p>
[QUOTE="John Roberts, post: 96548, member: 126"] Re: PCB shop for hobby projects? Voltage drop across a sense resistor would indicate polarity of current. Hall effect, is magnetic field responsive. Does that involve a one turn coil like a current probe? I guess current flowing in a straight wire generates a magnetic field. I recall putting a hall effect electronic points replacement on my motorcycle back in the '80s. The problem with the magnet on a disc, was that you could run the two stroke motor backwards. Of course you couldn't crank it that way but stuff happens. The company sent a replacement disc with two magnets placed so it couldn't start/run backwards. Yes, I am a convert to the dark (digital) side... you can do "almost" anything you can imagine. JR [/QUOTE]
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