Current Conveyor
The current conveyor (German translation about current conveyor ) is a category of idealized circuit building blocks of electronics . The term, and the first variant (known today with the abbreviation CCI) was introduced in 1968 by A. Sedra and KC Smith. A large number of other variants have now been added, e.g. B. the more important in practice CCII (Current Conveyor, second generation, in two polarities: CCII + and CCII-).
Current conveyors are similarly flexible circuit components as operational amplifiers , but they are based on a design method that focuses on the electrical current instead of the electrical voltage , as is more common with operational amplifiers. Some authors call this method the "current-mode approach", which is not, however, a sharp demarcation because in a specific circuit one always has to deal with currents and voltages. Representing a signal as a current (instead of a voltage) has the advantage that parasitic capacitances do not become noticeable and that relatively low operating voltages are sufficient. These advantages are particularly noticeable in an integrated circuit , which is why the influence of this method on the design of integrated circuits is more important than the influence on general circuit technology . For this reason, there are relatively few current conveyors on the market as finished components.
Individual evidence
- ^ Kenneth C. Smith, Adel Sedra: The current conveyor - a new circuit building block . In: Proc. IEEE 56 . S. 1368-1369 .
- ↑ Raj Senani, DR Bhaskar, AK Singh: Current Conveyors - Variants, Applications and Hardware Implementations . Springer, 2015, ISBN 978-3-319-35049-3 .