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05-04-2023, 04:06 AM
Noticed something I never really payed much attention to. I was seeing the voltage rate drop of a 160k resistor with multimeter clipped to the main cap. It steadily decreased all the way down to mV range (safe to work on).
I then wanted to see the voltage drops with no bleeding resistor in place. As soon as I turned the amp off it dropped fast to about 4V I think. Then it steadily started to rise. Up to about 7.25V and just stayed there. It was interesting to see. I was wondering why it does this. I would think it would not rise back up. This confirmed that yes I do need a bleed resistor in place. I never noticed that it actually can go back up like that to a steady 7V.
I then wanted to see the voltage drops with no bleeding resistor in place. As soon as I turned the amp off it dropped fast to about 4V I think. Then it steadily started to rise. Up to about 7.25V and just stayed there. It was interesting to see. I was wondering why it does this. I would think it would not rise back up. This confirmed that yes I do need a bleed resistor in place. I never noticed that it actually can go back up like that to a steady 7V.
