I'd like to use 7 segment leds and led arrays. Are there any pros and cons regarding using common cathode or common anode devices - ?
Thank you.
I'd like to use 7 segment leds and led arrays. Are there any pros and cons regarding using common cathode or common anode devices - ?
Thank you.
The warm fuzzy feeling comes from attching common points to ground (grr must attach to ground 
) which equates to common Cathode.
However if you are switching the LEDs on with a FET then most likely that will be N Channel and the most sensible configuration at this point is to switch the low side of the device which would require a common Anode.
Both exist for a reason, the final decision is dependant on your design or what stock you have. If some one else has just ordered 100K Comon Anode devices then you will probably be wanting to use these to reduce stock and BOM costs.
