[Open_electroporator] pyflex_f401 v0.5 prototype makes pulses.

John Griessen john at cibolo.com
Fri May 11 16:18:38 UTC 2018


My switchers both failed to put out properly, and speed is needed, so putting that off and digging for more old
wall wart supplies to send for testing...

Little things stop hardware from working.  Yesterday was spent on reworking some parts -- clip out and solder in,
and add extra parts in case the chip enable logic level needed to be at Vin level for the switcher.  No luck -- one
would go to 8V and be limited there by power dissipation built in governor, other would not start up switching
even after replacing the chip once.  Time to abandon that and package up a kludge for testing now.


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