Midwest P-5417-1 OPT

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next, sine wave at 100 K Hz, no sec load, top is winding not connected, bottom is winding connected,
 

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same thing at 1 M hz, phase shift actually gets worse at 1 M Hz with winding connected,
 

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ok the following tests are conducted wit a 12 ohm resistor across the secondary, winding connected in bottom pic,

not much phase change at 10 K Hz
 

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same test, at 100 K we get a substantial increase in amplitude with the mystery wind connected>
 

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back to the sq wave with a 12 ohm sec load,

10 K not much difference,  leading edge comes up a little better but ripple added,
 

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just for kicks we try a saw tooth wave, loaded sec, before and after winding connected>
 

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one of the most dramatic changes in waveform was at the resonant frequency of 80 K Hz,

here is a before and after with loaded sec, sine wave.

this was just a test. had this been a real emergency, be advised to tune to radio station at 101.92 M hz, this is only a test.

 

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