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Forum Index : Microcontroller and PC projects : PicoMite: driving a small speaker
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| Volhout Guru  Joined: 05/03/2018 Location: NetherlandsPosts: 3527 |
The amplifier is a differential amplifier. So it amplifies the difference between A and A-. In case of mono, you hear theretically nothing. Small differences between A and A- are amplfied. In case you have mono with counterfase signals, this results in a ver good loud audio. When A and A- are stereo, your loudspeaker will give the difference betwwe L and R. Volhout PicomiteVGA PETSCII ROBOTS |
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thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 3840 |
Thanks Volhout, this is what I thought, but doesn't match the observation that when fed a stereo signal with the same signal on L/AIN+ and R/AIN- I am getting a reasonable output. I guess I need to check my wiring. Best wishes, Tom Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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