Re: Can base amperage on an NPN be negative, and still work?

In message <1157299980.246735.203280@xxxxxxxxxxxxxxxxxxxxxxxxxxx>, dated Sun, 3 Sep 2006, Mr. J D <JedOs86@xxxxxxxxx> writes
I am using a couple of AND gates to turn on transistors. The datasheets
say it can output a max of -24mA at HIGH. I am attaching the output to
a 1K resistor - then to- the base of a NPN transistor. Does the
potential amperage need to be positive in order to turn on(saturate)
the transistor?


Would you please try to write 'current' instead of 'amperage'? Do you say 'meterage' instead of 'height' or 'hourage' instead of 'time'?

The minus sign indicates that the current flows OUT of the AND gate package, which is just what you want to turn on your NPN transistor.

Current isn't positive' or 'negative', it flows either 'in' or 'out'.
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