Wednesday, September 2, 2020

low power speaker driver

With less than 10ma drain on the battery driving a speaker is not to bad.

I'll have to take time to build this one. I filed it here so I don't lose it.

I built it and it sings. With my generator on minimum it is loud. With the attenuator on 20db it is just barely there. I can not crank it up much it hurts my ears.
With a 6 volt supply it draws 4.5ma.
with a 9 volt supply it draws 7.25ma.
It passes the finger buzz test too.

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