# Current Controlled Current Source (CCCS)

Here is a circuit that contains a Current Controlled Current Source (CCCS). The gain of the CCCS can be changed using the scrollbar.

When the gain of the CCCS is equal to 4 A/A this is the circuit considered in problem P2.7-3 of
**Introduction to Electric Circuits, 7e** by R.C. Dorf and J.A. Svoboda. In problem P2.7-3 the gain of the CCCS is denoted by the symbol d. Then

I_{a} = d * I_{b}
where d is the gain of the dependent source. Notice that the units of d are A/A. The currents I_{a} and I_{b}, both in Amps, are measured using the ammeters. Thus the gain of the dependent source can be determined from the meter readings.

Notice that

V_{s} = R * I_{b}
where R = 3 Ohms and V_{s} = 24 V. Thus

I_{b} = 8 A
regardless of the value of the gain of the CCCS.

### Challenges:

- Set the gain of the CCCS equal to 4 A/A to check the answer to
**Problem P2.7-3**.
- Determine the gain of the CCCS required to cause I
_{a} = 40 A. Verify that the meter readings are consistent with the gain of the dependent source.
- Predict the value of I
_{a} when the gain of the CCCS is 8 A/A. Check your prediction using the scrollbars.
- Predict the gain of the CCCS required to cause I
_{a} = 88 A. Check your prediction using the scrollbars.