Re: Driving tri-state LED matrix

On May 30, 4:53 pm, CBFalconer <cbfalco...@xxxxxxxxx> wrote:

See this is exactly what I was thinking... but miraculously this
worked perfectly in my college project. Even if my board mixed up
the collector with the emitter for one of the transistors, it still
doesn't explain why both transistors weren't always turned on... ?!

Transistors work with emitter/collector exchanged.  Their
efficiency, Vcc, etc. are sharply curtailed.  They are not
characterized for such operation.


Is there anyway I can get this to work... ? I'm thinking of using one
BJT and one FET, and also a pull-up/down resistor. I'll make up a
circuit and post a picture.
.

Relevant Pages

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