Voltage Controlled Current Source Formula

Dependent sources are useful for example in modelling the behavior of amplifiers.

Voltage controlled current source formula. I have attached the help file explanation. A bipolar junction transistor can be modelled as a dependent current source whose magnitude depends on the magnitude of the current fed into its. Voltage controlled current source using ina105 18 voltage controlled current source with instrumentation amplifier input the xtr101. Voltage sources cannot be connected unless the voltage source s terminal voltage are equal.

The op amp attempts to keep the voltages at both terminals the same so v v call v 1 the voltage across r 1 and i 1 the current across r 1 then v 2 v 4 since i 1 i 2 and r 1 r 2 v 1 v 2 v 4. The above process can be reversed if we have a current source on the right side we can transform it to a voltage source on the left side by the following formula. Spintronic technology is based on the control of spins in a magnet. The current through the load is the same regardless of the position of the switch.

V v v 1 5v. The above two circuits are equivalents such that they have an identical voltage current relationship at terminal a b. Spin polarized current has been successfully used to manipulate the magnetization various physical phenomena based on the coupling of spins to phonons 2 3 orbital angular momentum 4 6 or heat current 7 9 have been observed recently which has led to novel possibilities of switching the. 20 current to voltage converters and current receivers current.

Anyone have any idea how it works and what are. The operational transconductance amplifier ota is an amplifier whose differential input voltage produces an output current thus it is a voltage controlled current source vccs. I 3 v r 3 v 1 5v r 3. Practically a ideal current source is impossible but a circuit can be configured such that when the voltage across the load is changed the supplied current current varies negligibly.

20 single supply voltage controlled current source the xtr110. A current source which provides a constant current without any relation with the voltage supplied to the load is called ideal current source. Hx 5 17 vz 0 5k. In the theory of electrical networks a dependent source is a voltage source or a current source whose value depends on a voltage or current elsewhere in the network.

Linear current controlled voltage sources general form. Value is the current gain. In this the current source is depending upon a circuit s existing current or voltage sources the source will be placed in the same circuit some other location voltage controlled current source. There is usually an additional input for a current to control the amplifier s transconductance the ota is similar to a standard operational amplifier in that it has a high impedance differential input stage and that.

The direction of positive controlling current flow is from the positive node through the source to the negative node of vnam. Hi i have found the voltage controlled voltage source vcvs voltage controlled current source vccs in advanced design system simulation and trying to understand how it works in modeling a circuit. This circuit shows a current source.