Push-pull signal

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A push-pull signal is called a signal that is sent to all inputs of a module that are relevant to the function, e.g. B. at the inputs of an operational amplifier , applied simultaneously with opposite phase. Push-pull voltage signals are called push-pull voltages. In the case of currents, one speaks of push-pull current. Symmetrical signal transmissions are an example of push-pull signals.

Real signals are usually a superposition of common-mode and differential- mode signals .

example

The following figures show a common mode signal, a push-pull signal and the superposition of the two signals for real power distribution.

  • The current arrows indicate a common mode signal that is transmitted to the consumer Z via z. B. a parasitic impedance Z e closes over the reference potential

  • The current arrows indicate a push-pull signal that flows in the same size on the forward and return conductors

  • The superposition of the common mode signal and the push-pull signal results in the real power distribution on the line

literature

  • Joachim Franz: EMC. Fail-safe construction of electronic circuits, Teubner Verlag, Stuttgart Leipzig Wiesbaden 2002, ISBN 3-519-00397-X .

See also

Web links