Can a current source have no voltage?
3 Answers. A current source can certainly have a voltage across it. If the voltage across a current source is zero, then it is not delivering or absorbing any power. However, if the voltage across the source is not zero, then it is either sourcing or sinking power into the rest of the circuit.
What is voltage source example?
A voltage source is a two-terminal device whose voltage at any instant of time is constant and is independent of the current drawn from it. Such a voltage source is called an Ideal Voltage Source and have zero internal resistance. The example of voltage sources is batteries and alternators.
Can a current be dependent on a voltage?
For example, a current source could be dependent on a voltage while a voltage source could be dependent on a current. It’s just a mathematical representation. It will cause some things that look odd at first, like 0.5v 1 amps, but it’s perfectly natural.
Is the current source the same as the voltage source?
Every circuit has a power source, or else it won’t do much. While the actual power source can vary wildly, they all fit under the two general titles of “voltage source” or “current source”. From a lightning strike to a USB port, any source can be modelled as one of these two things.
Which is a source of a constant current?
A current source is a source that provides a set amount of current by varying its voltage. It’s usually represented by the symbol below: In this case, the idea of a DC or AC voltage doesn’t apply as the current source will produce whatever voltage is necessary to keep a constant current, whether that voltage is positive, negative, or varying.
Can a circuit have an infinite current source?
However, if resistance goes to infinity, an open circuit, then the voltage will go to infinity. Again, this is a problem. In essence, just not connecting the two halves of the circuit creates dangerous voltages. Although real current sources will not reach an infinite voltage, it is still a dangerous or destructive situation.