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hmm. piezo efficiency [message #36876 is a reply to message #36875]

Fri, 14 June 2002 12:23

dbeardsl
Messages: 127
Registered: May 2009

Master

How efficient are piezo's in terms of % electrical energy converted to acoustic enegery? I know most high eff drivers range 1% to 4 or 5%. But a piezo has MUCH less current with such a high impedance... and they produce very similar acoustice output 92 - 96db vs 96 - 101 db.

I don't know what kind of impedances piezos present, I've heard 50 ohms but I've also heard 1kohms, course it depends on frequency (piezo's are similar to a lossy Cap).

Anyone ever calculate it?, I'd imagine it's in the 50% and up range.. ?

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[Message index]

		How is the One Pi dampened inside? By: Erik Johansson on Fri, 14 June 2002 01:47
		Throwing in a small question along side Eriks. By: Mattias S on Fri, 14 June 2002 02:03
		Re: Throwing in a small question along side Eriks. By: Erik Johansson on Fri, 14 June 2002 02:13
		Piezo stuff By: Wayne Parham on Fri, 14 June 2002 08:42
		hmm. piezo efficiency By: dbeardsl on Fri, 14 June 2002 12:23
		Specifications sheet for the KSN-1038 By: Wayne Parham on Fri, 14 June 2002 13:57

Previous Topic:	Hi Wayne. Few more questions
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