Tag
#voltage drop
2 topics across all disciplines.
DC circuits, voltage drop and earthing
Why a vehicle uses the body as half of every circuit, why voltage drop and not resistance is the measurement that finds electrical faults, what a fuse actually protects, why relays exist, and how parasitic draw is tested.
Oscilloscope and CAN waveform diagnosis
What a scope shows that a scan tool and a multimeter cannot, how a healthy CAN pair should look, the four faults that account for most bus problems, and why voltage drop beats resistance every time.