"Michael A. Terrell" wrote in message
...
default wrote:

On Sat, 16 Dec 2006 19:57:54 GMT, "ian field"
wrote:


"default" wrote in message


Try it with no battery installed. There is usually just an FET and
pull up resistor in it. Removing the battery should leave just the
FET and you'd have the pull up resistor/voltage source inside the
flash recorder - the way standard un powered electrets work.

Doubtful - the output of the OP's powered mic appears to be capacitor
coupled, so there's no DC path to supply the FET.

Well, cap coupled wouldn't work. I'd try it, nothing to lose, and
wouldn't you feel stupid if you didn't try that first?


No, since I don't expect it to work like that when its designed
properly. Also, you are applying a reverse voltage to the coupling
capacitor if you try this.


Since you mention that, if the cap is a tantalum even a small reverse
voltage can cause S/C failure - so it could work after all!!