Signal conversion circuit for dimming, lamp and method
The invention provides a signal conversion circuit for dimming, a lamp and a method, and the circuit comprises a first signal conversion module which is used for converting an input analog signal into a corresponding PWM signal; the adjusting module is connected with the first signal conversion modu...
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| Hauptverfasser: | , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides a signal conversion circuit for dimming, a lamp and a method, and the circuit comprises a first signal conversion module which is used for converting an input analog signal into a corresponding PWM signal; the adjusting module is connected with the first signal conversion module, and the adjusting module is used for adjusting the input voltage range of the first signal conversion module and switching the duty ratio of the output PWM signal and the voltage value of the input analog signal to be in positive correlation or negative correlation; the isolation voltage regulation module is connected with the first signal conversion module; and the second signal conversion module is connected with the isolation voltage regulation module, and the second signal conversion module is used for converting the PWM signal into an output analog signal. The first signal conversion module is adjusted through the adjusting module, input analog signals adaptive to different voltage ranges are achieved, the |
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