Zero cross detection circuit with switch detection function
The utility model discloses a zero-cross detection circuit with a switch detection function, comprising a rectification circuit comprising a first diode, a second diode, a third diode and a fourth diode, the negative electrode and the positive electrode of the second diode are respectively connected...
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Format: | Patent |
| Sprache: | chi ; eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | The utility model discloses a zero-cross detection circuit with a switch detection function, comprising a rectification circuit comprising a first diode, a second diode, a third diode and a fourth diode, the negative electrode and the positive electrode of the second diode are respectively connected with the negative electrodes of the first diode and the third diode, and the negative electrode of the fourth diode is connected with the first diode; the anode of the third diode is connected with the anode of the fourth diode, and the cathode of the fourth diode and the anode of the first diode are respectively connected with two ends of the AC input control switch; the input end of the voltage division circuit is connected with the cathode of the first diode; the detection signal output circuit comprises a photoelectric coupler, the positive electrode of a light emitting diode in the photoelectric coupler is connected with a voltage division circuit, the negative electrode of the light emitting diode is connect |
|---|