I’m collecting parts for a vertical =
seismometer and
intend to use feedback. The feedback transducer I have is from a =
12”
hi-fi speaker. I have separated the voice-coil and magnet and now =
wondering
what sort of current capability do I need to specify for the voice-coil =
driver.
Certainly this voice-coil must have high power capacity when it was used =
as a
speaker. DC resistance is 7 ohms. If you assume a 20 watt speaker and 7 =
ohm
resistance, then RMS current would be 1.7 amp. Has anyone built a =
transducer
driver with this sort of capability. Next question what would be the =
voice coil
force I would get. Sounds like I need to do some experiments. Any =
thoughts or
experience is much appreciated.
Gary
Gary Lindgren
585 Lincoln Ave
Palo Alto CA 94301
650-326-0655<=
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www.blue-eagle-technologies.com &nbs=
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Check out Lastest Seismometer =
Reading
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