I'm pretty sure you'll be fine. You have a margin of 60% even under worst conditions. What collector current are you designing for and do you have a specific ULN2803 in mind (several manufacturers makes them, they may not all be equal).
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Re: Drive Current Sufficiency
I'm pretty sure you'll be fine. You have a margin of 60% even under worst conditions. What collector current are you designing for and do you have a specific ULN2803 in mind (several manufacturers makes them, they may not all be equal).
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Re: Drive Current Sufficiency
Henrik Thanks for being my guardian savior angel again. The relays have 1028 ohm coil resistance so that returns a 11.67 ma collector current for per relay at 12V .ULN2803 is not an option for this project since we doesn't have a chance for the component stock .
- Ipsa scientia potestas est -
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