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Orion 225 HCCA Digital Reference
Orion 225 HCCA Digital Reference
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Old 14th January 2020, 05:57 PM   #21
jkrokenberger is offline jkrokenberger  United States
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Yes. It's the pull-down for the gates I think. It's in the middle of the totem pole.
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Old 14th January 2020, 08:28 PM   #22
miniman82 is offline miniman82  United States
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If so that's likely your problem, is the falling edge of the waveform slow/rounded? If so, additional current will be drawn by that side, vice a nice clean square wave.
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Old 15th January 2020, 02:19 AM   #23
jkrokenberger is offline jkrokenberger  United States
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The 12V zener was what was bad. It read ~80R in both directions. The side with the good drive was getting hot. Tis' perfect now.

Last edited by jkrokenberger; 15th January 2020 at 02:34 AM.
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