Picaxe Floating outputs on startup

rmtucker

Member
I have read many post about having pulldown resistors on a mosfet gate to keep it low during boot up in sensitive circuits.
Would this also apply when using a uln2803 and Relays to drive sensitive Circuits?
Don't want anything running wild on boot up.
 

Technical

Technical Support
Staff member
If you look within the uln2803 datasheet you will see that there are internal resistors which already do this.
 

nick12ab

Senior Member
The ULN2803 is bipolar anyway so why would floating inputs cause any transistors in the chip to turn on?
 
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