11-15-2013, 05:42 PM
Claude,
I'm not seeing any transistors in that updated schematic. He's added a couple of diodes but they look like they are more for over and under voltage protection.
He did make some good comments but what I said is still valid even if it is only for one billionth of a second. I would suggest using something like this part to replace the IC he is using. It'll only consume about 10uA when idle (LED off).
http://www.digikey.com/product-detail/en...-ND/770525
Please don't take this as a criticism of your friends design. It will likely work without a problem.
Ed
I'm not seeing any transistors in that updated schematic. He's added a couple of diodes but they look like they are more for over and under voltage protection.
He did make some good comments but what I said is still valid even if it is only for one billionth of a second. I would suggest using something like this part to replace the IC he is using. It'll only consume about 10uA when idle (LED off).
http://www.digikey.com/product-detail/en...-ND/770525
Please don't take this as a criticism of your friends design. It will likely work without a problem.
Ed