What happens when resistance is zero?
In the case where there is no resistance, current (once flowing) does not require any voltage to continue flowing. Likewise it doesn’t take any voltage to keep current flowing if there is no resistance. You’re correct that if you have a perfect insulator (R=∞), then any applied voltage will still produce zero current.
Why is it important to network?
Networking will help you develop and improve your skill set, stay on top of the latest trends in your industry, keep a pulse on the job market, meet prospective mentors, partners, and clients, and gain access to the necessary resources that will foster your career development.
How do you diagnose CAN bus problems?
When diagnosing bus or module communication problems, you usually start by checking for voltage at the module, then the ground connection, and finally the data line. If all three are good but the module isn’t working, the module needs to be replaced.
Can low and high resistance?
In a low speed CAN each device should have a 120 Ohm resistor. In a high speed CAN-Bus (>100Kbit, used in automotive) only each end of the main loop should have a 120 Ohm resistor. You should measure 60 Ohms over these 2 wires, because there are two 120 Ohms resistors in parallel (parallel resistance calculator).
What causes negative resistance?
Negative Resistances is a behavior in which the current and voltage are inversely proportional to each other. A normal circuit with a resistor following ohm’s law has a current drop, when the voltage decreases. In case of a negative resistance, the current increases with a voltage drop.
Can a network be terminated?
A CAN bus termination (of 120 Ohm each) must be present at the two physical end points of the CAN network. The CAN network has to be connected from one node to the other with a bus termination for each of the two end points. A CAN network has no(!)
Where is the can bus located?
Typical places to pick up CAN include the ABS system (look for a pair of twisted wires, but ignore the four wheel speed wires) or on the back of the dashboard (look for a pair of twisted wires). If the vehicle does have CAN Bus on the OBD connector, it will normally be on Pins 6 and 14 as indicated below.
Can network uses?
Medical equipment manufacturers use CAN as an embedded network in medical devices. Lifts and escalators use embedded CAN networks, and hospitals use the CANopen protocol to link lift devices, such as panels, controllers, doors, and light barriers, to each other and control them.
Can you have negative resistance?
It’s not possible to get a negative resistance with purely passive components. We can see that from thermodynamics. A normal (positive) resistor puts out heat to the surroundings – voltage times current gives us the power dissipated. A negative resistor would need to suck in heat and turn it to electrical energy.
What are the advantages and disadvantages of networking?
Computer Network Advantages and Disadvantages Comparison Table
|The basis of comparison||Advantages of computer networks||Disadvantages of computer networks|
|Flexibility||A higher level of flexibility||Low flexibility|
|Operating cost efficiency||Efficient||Inefficient|
What are the advantages of storage area network?
There are so many advantages to using Storage Area Networks, but here are our top five associated benefits.
- Reduces LAN bandwidth problems. A key benefit of SANs is bandwidth improvement.
- Improved data security.
- Responsive backup.
- Increased scalability.
- Reliable disaster recovery.
CAN bus problems?
The majority of CANBUS communication problems are caused by poor wiring, incorrect termination, or the use of multiple frequencies on the same bus. Below are some tips for diagnosing CANBUS communication problems: There must be exactly two (2) termination resistors of 120 ohms each at the physical ends of the CANBUS.
Can you repair CAN bus wiring?
Repairs to CAN bus wiring can be carried out either with sections of repair wiring with the correct cross section or with entwined wires “green/yellow” or “white/yellow” from the electronic parts catalogue (ETKA) → Electronic parts catalogue (ETKA). When repairs are performed, both bus wires must have the same length.
CAN bus diagnostic?
The CAN bus is used not only to interchange information between devices connected thereto, but also to enable an OBD standard connector to be used so that that parameters of particular systems and information on errors can be read by means of external diagnostics interfaces.
What are the four main reasons for networking computers?
Importance of Computer Networking :
- Provides best way of business communication.
- Streamline communication.
- Cost-effective resource sharing.
- Improving storage efficiency and volume.
- Cut costs on software.
- Cut costs on hardware.
- Utilizes Centralized Database.
- Increase in efficiency.
Why networking is important in our daily life?
They largely influence growth in your status and pave the way for better opportunities in your career. Your connections are powerful! Networking is the key tool to growth in a resourceful career. Training and certification garnered from networking builds self-confidence and promotes self-esteem.
Can message bytes?
A CAN message may contain up to 8 bytes of data. A message identifier describes the data content and is used by receiving nodes to determine the destination on the network. Bit rates up to 1 Mbit/s are possible in short networks (≤ 40 m).
How can you tell if your high and low?
Checking CAN Voltage Measure voltage on any of disconnected plugs between CAN HI and GROUND. The resulting voltage should be between 2.5 and 3.0VDC. At the same location, measure voltage between CAN LOW and GROUND. The resulting voltage should be between 2.5 and 2.0 VDC.
CAN bus speed?
What does negative Thevenin resistance mean?
However, when modeling a circuit that contains dependent sources, it is possible that the Thevenin Equivalent resistance is negative. This does not mean that we can have negative valued resistors. It means that the circuit model includes a negative resistance. Only circuits with dependent sources can have negative RTH.
What is networking explain?
Networking is the exchange of information and ideas among people with a common profession or special interest, usually in an informal social setting. (The term computer networking refers to linking multiple devices so that they can readily share information and software resources.)