What is the best way to drive this sounder
I don't have one to play with at the moment, but the data sheet says it has 18000pF capacitance.
I'll be driving it from a 8051 port pin, 5v available. I suppose a push pull arrangement would be best
martin
sounder
You may find this useful:
If you drive it directly from a chip, pay attention to their warnings about protection. The damn things do work backwards (convert mechanical energy into electrical) as well as forwards! (I found this out the hard way many many years ago.)
-- Silvar Beitel
sounder
thanks, very useful
martin
sounder
A protected push pull driver is the way to go. In the past I have found that a small inductance in series with the sounder helps the efficiency of making noise. It cuts down the peak of the current when the edge happens and spreads it out in time.
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