| 摘要 |
A diode detector that is stable and linear over a wide range of variations in both temperature and power supply voltage and can be used to regulate a.c. signals produced by devices that are responsive to control signals includes a detector diode and a first resistor in series, a capacitor connected between the junction of first resistor and the detector diode and a reference potential, and a compensator diode and a second resistor in series with each other and with the detector diode and first resistor. An input a.c. signal is provided to a first terminal of the detector diode, and a rectified signal is provided at the junction of the detector diode, the first resistor, and the capacitor. The detector diode and the compensator diode have temperature coefficients that are substantially the same, and those diodes have the same polarities. An output buffer amplifier may receive the diode detector's output signal, the buffer amplifier having an input bias current that is low relative to an average rectified signal current through the compensator diode. The detector diode and the compensator diode may be Schottky-type diodes and the output buffer amplifier may be a FET-input operational amplifier. A signal generator having a regulated output and employing the diode detector is also disclosed. |
