the loss of voltage as electrons flow through a circuit due to the resistance (impedance) in that part of the circuit. So, in other words, it is the amount of voltage lost in the circuit due to resistance. Voltage Drop is a natural part of a circuit and will occur through the materials that are a part of it (wires and connectors) as well as the components. It is important to understand that the drop in voltage is
Resistance is defined as the impeding, slowing, or stopping effect exerted by one material thing on another. Before we talk about electrical resistance it is important to understand that on a vehicle that there are 2 types of resistance you will run into (Pun intended)....
Because the amps are the workforce of the battery flowing through the vehicles circuits and thusly “activating” the things that need to be working (electrically) it is important to always have the correct amount of electron flow to components. Whether starting a motor, fan, relay or lightbulb everything on the vehicle has a...
In automotive in general and now more than ever, we are heavily reliant on electrical power to start our circuits, power our computers, run sensors, send messages between systems, operate safety and infotainment systems and as always produce spark at the motor. Voltage in a vehicle is now just a part of every day life...
A quick check of available voltage at an automotive battery would show you around 12.6v. No need for a graph to show a static number. However, if checking to see how much voltage signal is being returned from a throttle position sensor (TPS), a graph would be quite helpful. This voltage signal would likely travel upward vertically from 0vdc to 5vdc as the pedal
In the case of an electric motor, amps are the “pushing force” that are needed to turn that electric motor… initially pushing a completely stopped motor will take more amps (known as inrush), then eventually once those amps get that motor spinning there are less required to keep it moving so that value is known as (operating amperage).
Depending on the type of circuit and operational health of that circuit an ohm measurement can be variable (Thermistors, etc...), non existent (or very very low) or visible but not expected. With the ability to give live readouts and graph resistance measurements you are able to see the resistance value of a circuit or component immediately (live) and in its past in relationship to time. Although this seems obviou
You’ve been here before. A vehicle’s ‘Service Engine Soon’ light appears and the customer is looking for answers. You get out the diag-shovel and start to chip away. First stop is a quick scan of the diagnostic trouble codes. A seemingly simple P0xxx performance code. The diagnostic chart says that this code can be caused from the engine computer noting an unexpected drop in sensor signal. You hop over to the data stream to see what all the fuss is about. Then, without warning, a flash of lightning and a booming thunder clap
Electrical testing can require all five senses. The taste of a still healthy nine-volt battery. The smell of the Christmas tree while swapping endless bulbs to find a string that works. The feeling of pulling a failed spark plug wire to find a cylinder misfire. The sound of an arcing wrench across a battery terminal. And lastly but most importantly, what you can, or can’t see. The results of electricity are easy to find but it is otherwise invisible.
The ability to compare readings from N2 units for either channel to channel comparisons, relationships OR variances which when applied to temperature testing can easily turn your N2's and mobile application into the hvac testing tools of choice beyond testing of electrical measurements, dropouts and glitches.