On Wed, 2012-01-25 at 19:52 +0200, Roland Jollivet wrote: ... snip > By the way, you are using a PNP package for a NPN device. Be sure to > change it before doing a layout. > > Regards > Roland
Uugh, that's embarrassing. I got the part number from Viesturs' e-mail reply, just pasted it in and didn't see the flaw. If this is really a BD139, the circuit won't work. Thanks Roland. I guess I shouldn't apply for any detective jobs. I suppose the BD139 could be made to work, but I would need to build the circuit to say anything with confidence. See attached. I suppose a lot of what I do involves magic ... by letting the magic smoke out of defenseless bits of plastic. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA
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