Hi everyone,
I'm uncertain on how to use my ULN2803A transistor array. I understand with regular npn transistors, you simply supply your larger current source to the collector pin, which goes to the emitter pin if toggled by a smaller current "switch" applied to the base pin.
With this transistor array, there doesn't seem to be a Vcc pin, only a ground pin. Where is the larger current coming from? There is also a "common free wheeling diodes" pin, is this supposed to be tied to ground or Vcc?
Any clarification would be great! Thanks!
View attachment en.CD00000179 - transistor array.pdf
I'm uncertain on how to use my ULN2803A transistor array. I understand with regular npn transistors, you simply supply your larger current source to the collector pin, which goes to the emitter pin if toggled by a smaller current "switch" applied to the base pin.
With this transistor array, there doesn't seem to be a Vcc pin, only a ground pin. Where is the larger current coming from? There is also a "common free wheeling diodes" pin, is this supposed to be tied to ground or Vcc?
Any clarification would be great! Thanks!
View attachment en.CD00000179 - transistor array.pdf
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