PicoMite: driving a small speaker


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mozzie
Regular Member

Joined: 15/06/2020
Location: Australia
Posts: 68
Posted: 02:23am 25 Mar 2023      

If the original question is the simplest / low cost / minimal approach to driving a small low cost / quality speaker from a Pico then a simple push / pull emitter follower with output cap works fine here



Yes its LO-FI
Yes there is a little hiss
Yes it may be outputting 44khz (but I cant hear it)
Yes the output is only about 2v p-p @ 40khz and the audio is below that

But it is simple  

Regards,
Lyle.

P.S. Just found Phil99's original post and that is an elegant solution:
https://www.thebackshed.com/forum/ViewTopic.php?TID=15362&P=3#194596#194596
with only a couple of extra components.
Edited 2023-03-25 12:39 by mozzie