Where is voltage source in LT Spice?

Where is voltage source in LT Spice?

In LTspice, voltage sources are DC by default. To specify the source as sinusoidal, right click on the voltage source symbol and select the Advanced button. The window in figure 13 will appear. Select SINE and then set the values shown for offset, amplitude and frequency.

How is current measured in LT Spice?

Hold down ALT while probing around and the current measurement symbol will appear on your mouse cursor as you hover over a wire.

What is independent current source?

An independent voltage/current source is an idealized circuit component that fixes the voltage or current in a branch, respectively, to a specified value. Remember that the state of a circuit is given by the voltage across and current through each branch of the circuit.

How are dependent sources made?

A dependent source is a current or voltage source whose value is not fixed (i.e., independent) but rather which depends on some other circuit current or voltage. The general form for the value of a dependent source is Y=kX where X and Y are currents and/or voltages and k is the proportionality factor.

Why is current negative in LTspice?

It uses the same convention for sources and loads, which is that + power is absorbing and – power is delivering. Since the voltage is positive the current is negative to give you a negative power.

What is independent source example?

For example, two separate people who witness a traffic accident, first hand, could be considered independent sources. However, if one person witnessed the accident and told the other one about it, then they would not be independent, since one would depend on the other for their information.

What is dependent and independent current source?

Independent source are those, whose value of either the voltage or the current to be delivered is independent of any other parameter of the network. Where as the dependent sources are those, whose value of either the voltage or the current to be delivered is dependent or controlled on other parameters of the network.

How do you identify independent and dependent sources?

A dependent source could be based on the voltage across a resistor, or even the current flowing through a specific wire, for example, but independent sources produce current/voltage at a specific rate that is only time dependent.

Does an independent current source have a voltage?

As with voltage sources, the current source can be either independent (ideal) or dependent (controlled) by a voltage or current elsewhere in the circuit, which itself can be constant or time-varying.

What is Ccvs and Vccs?

Four types of controlled sources are available: current controlled current source (CCCS), voltage controlled current source (VCCS), current controlled voltage source (CCVS), and voltage controlled voltage source (VCVS). Controlled sources can be controlled by any voltage or current from the model.

What is current controlled current source?

Description. The Controlled Current Source block converts the Simulink® input signal into an equivalent current source. The generated current is driven by the input signal of the block. The positive current direction is as shown by the arrow in the block icon.

Why is my current negative?

Electric current, (in the physical sense) is the sum of the movement of positive charges in the reference direction, and negative charges opposed to the reference direction. It happens that electrons have negative charge, so they move against the reference direction.