On Sep 30, 2005, at 1:11 PM, Harold Hallikainen wrote:
>
> We're going to be shipping several thousand units a month. The pump is
> about $5.00 I'm trying to keep costs down.
>
If you have a cheap source that will do things like rewind the pump
magnet (!), perhaps you should just investigate what it would take
to implement a DC-based pump (either along the same lines as a DC
buzzer, or using a motor to drive a cylinder or diaphragm.  I have
such a motor driven pump surplus from Electronics Goldmine - it just
uses a rotating cam on the motor to drive a the diaphragm.)

BillW
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