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I'm trying to fit a wall wart I rewired to 40V to work with the Apheared #42, which uses a TLE2426 as a virtual-ground driver. I'm regulating the voltage of the wart down to ~18-19V before feeding it into the TLE2426, but I don't know how much current is going into the TLE2426, but I would definitely say it's way too much, since I've fried 3 TLE2426's. I did try to use a BUF634, but that probably also won't work with current that's too high, since it got very hot when I tried its thermal shutdown protection probably activated.
So how can I limit the current provided by this regulated wall wart so I can use the ground drivers I need? Since the #42 doesn't required much current from the power supply, I'd rather not use 2 voltage regulators (e.g. the LM317 and LM337 pair) to make a + and - rail.
So how can I limit the current provided by this regulated wall wart so I can use the ground drivers I need? Since the #42 doesn't required much current from the power supply, I'd rather not use 2 voltage regulators (e.g. the LM317 and LM337 pair) to make a + and - rail.