J
[email protected]
- Jan 1, 1970
- 0
It is hot in my office and for some reason I don't have any available
power outlets near me to power a desk fan so I want to make a fan that
is powered by USB. I bought a cheap handheld fan that is powered by 2
AA batteries (3V) and I want to convert it to run off a 5V USB
computer port. I need to step the voltage down from 5V to 3V. What
type of resistor would I need to do this? It would be nice to make
the fan have adjustable speeds so would I use a potentiometer to do
that? What type and rating? I am using this article as a reference
for my design...
http://www.instructables.com/id/E5EU54XP26EP2871HG/
I greatly appreciate your thoughts.
power outlets near me to power a desk fan so I want to make a fan that
is powered by USB. I bought a cheap handheld fan that is powered by 2
AA batteries (3V) and I want to convert it to run off a 5V USB
computer port. I need to step the voltage down from 5V to 3V. What
type of resistor would I need to do this? It would be nice to make
the fan have adjustable speeds so would I use a potentiometer to do
that? What type and rating? I am using this article as a reference
for my design...
http://www.instructables.com/id/E5EU54XP26EP2871HG/
I greatly appreciate your thoughts.