Tagged Questions

3
votes
2answers
84 views

Power switch for a dive computer

I am creating an open source dive computer (www.diydivecomputer.com) and I am having a little bit of a problem trying to figure out how to power the device on and off. The problem is that the device ...
1
vote
1answer
89 views

Power analysis of a simple circuit and battery lifetimes

I only do electronics stuff as a hobby so forgive my simple question. I have a simple IR LED/photodiode detector circuit hooked up to an arduino microcontroller. It's not important but the purpose is ...
1
vote
2answers
123 views

Powering Nerf Gun With Wall Adapter

I have the Nerf Stampede gun that i am planning on making an automated turret from and need some help running it from a wall adapter, so here is where i stand: The gun normally requires 9V (6 ...
2
votes
2answers
178 views

Accepting a Range of Input Voltage that Straddles Operating Voltage

I want to design a system that runs at 5V and about 350mA. I want that system to accept an input voltage between 1.8V and 15V. How can I achieve that goal with a minimum component cost in my input ...