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Old 21 April 2014, 00:14   #329
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Join Date: Mar 2012
Location: Norfolk, UK
Posts: 427
Originally Posted by H.M View Post
BTW : About the piezzo mod -> Nice. I think that the modification can be less difficult with a mosfet. have you tried this?
An update on this: A MOSFET on its own doesn't work because the Step pulse is so narrow. A MOSFET followed by a lowly BC547 works a treat, however - the long storage time of the latter widens the Step pulse nicely. An updated schematic will follow.
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