M
Martin Cote
- Jan 1, 1970
- 0
Hi, I was looking at the following circuit:
http://static.flickr.com/56/145174497_d31b603880.jpg
and I was wondering why the transistor is used in the first place. From
what I can see, it is used to amplify the current in order to drive the
motor.
Since the motor seems to require 470mA to run, why not simply use a
current limiting resistor instead? With a 5V battery and a 10 ohm
resistor, the current should be around 500mA which should be able to
drive the motor, no?
What am I missing?
Thanks all,
Martin
http://static.flickr.com/56/145174497_d31b603880.jpg
and I was wondering why the transistor is used in the first place. From
what I can see, it is used to amplify the current in order to drive the
motor.
Since the motor seems to require 470mA to run, why not simply use a
current limiting resistor instead? With a 5V battery and a 10 ohm
resistor, the current should be around 500mA which should be able to
drive the motor, no?
What am I missing?
Thanks all,
Martin