| 摘要 |
A circuit for switching analog signals between an input and output and having a high S/N ratio includes a controllable semiconductor switching device coupled between the input and output terminals and having a control electrode. The latter is coupled to a bypass circuit which grounds the control electrode at the analog signal frequency. The bypass circuit acts as a constant-current source when the voltage at the control electrode exceeds a predetermined value, the magnitude of the constant current being less than the current flowing through the switching element when the latter is conductive.
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