This preview shows
page 1. Sign up
to
Ground Switched Outputs
Most computer outputs are controlled by the computer providing a ground for the circuit. An example is a
cooling fan relay. The relay coil has ignition switched power applied to it and the computer will provide a
path to ground when the relay is commanded on. A ground switched device will have system voltage at the
computer terminal when the device is off and a low voltage, very close to ground, when the device is on.
This is the end of the preview.
Sign up
to
access the rest of the document.
- Winter '12
- JohnKelly
- The Circuit, Fan, Relay
-
Click to edit the document details
