Why is this circuit called a voltage divider?
with respect to a common point or ground, usually 0V, or it could be across a dual supply, for example ±5V, or ±12V, etc. Voltage dividers are also known as potential dividers, because the unit of voltage, the “Volt” represents the amount of potential difference between two points.
Why is the current divider circuit useful?
The Current Divider Rule allows us to calculate the current flowing through each parallel resistive branch as a percentage of the total current.
What do parallel circuit mean?
In electric circuit. A parallel circuit comprises branches so that the current divides and only part of it flows through any branch. The voltage, or potential difference, across each branch of a parallel circuit is the same, but the currents may vary.
What happens when the 5V reference wire is grounded?
The 5V reference wire was the first wire in the harness to be grounded. Keep in mind that the ECM/PCM also needs the 5V to operate and it lost power as well. On this vehicle, the starter circuit also shut down. As I stated earlier, the other 5V reference wires will be lower or show 0A.
How to test the amperage on a 5V reference circuit?
To test the amperage on a 5V reference circuit, these simple procedures will give you the best results: •Identify all 5V reference wires. onto each 5V reference wire that needs to be tested. Remember, this test is performed at the computer. •Zero the meter each time with the vehicle’s ignition switch off. This is a very important step.
What to do if your 5V reference circuit is dead?
When you confirm that the 5V reference circuit is dead, you need to locate the source of the problem. The reference circuit may have as many as five to nine wires from the computer to different sensors on the vehicle. Where do you start looking? As with any electrical problem, you need to review the vehicle’s wiring schematic.
Why are 5 volts used in a circuit?
It was designed to use 5 volts because that provided the best combination of noise immunity, power consumption and speed with the existing technology. Naturally, connecting circuits such as sensors and other devices tried to use the same voltage to avoid the need for extra power supplies.