| 摘要 |
<p>Polarity reversal circuit for reversing the polarity of the conductors (LI0, LI1) of a telecommunication line. This circuit includes a reference circuit having two outputs (JP1, JP2) on which respective reference voltages V+ - x and VEET + x are produced, as well as a gating circuit able to connect each of the reference circuit outputs to a selected one of the output (VTI, VRI) of the circuit via forwardly biased diodes (P1, N4, P6, N17, N15, N16) and a resistance (R36) for compensating the voltage drop in these diodes.</p> |
