I have a switch with three positions that switches from the middle pin ground to the outer ones. I want a LED to light up when the switch is in the middle position. But only in the middle position. See (LP 18 has nothing to do with the issue): [IMG_1526] I am looking for an elegant circuit with as…

I think you mean that the middle pin is grounded and each of the others goes to the negative of a component to turn it on. No, The amplifier chip has a extra input to turn it off while grounded. It's a PAM8302A with a 1uA shutdown current to the shutdown pin. The TFT Display Backlight can be PW…

Simple question but tricky

Other Hardware General Electronics

anon57585045 November 20, 2021, 4:38pm 6

Like a DPDT switch?

Do you know anything about the Backlight and LSP_SD connections? What voltages/impedances are on there?

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Simple question but tricky

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