Touching dimmer circuit composed of S7232
The touch dimmer circuit operates by detecting the presence of a finger on a capacitive touch sensor. This sensor converts the touch input into an electrical signal that is processed by a microcontroller or a dedicated IC designed for dimming applications. The output from the microcontroller modulates the power delivered to the incandescent lamp or AC motor, allowing for smooth transitions in brightness or speed.
The circuit typically includes a power supply unit that converts the AC mains voltage to a suitable DC voltage for the control circuitry. A triac or a solid-state relay is often employed to control the power flow to the load, ensuring that the switching occurs at the appropriate phase of the AC cycle to achieve the desired dimming effect.
Additional components may include filtering capacitors to stabilize the power supply, resistors to limit current, and diodes for flyback protection, particularly when controlling inductive loads such as motors. The design may also incorporate a feedback mechanism to maintain consistent performance across varying load conditions.
This touch dimmer circuit is ideal for applications where user-friendly control of lighting and motor speed is desired, providing both convenience and energy efficiency.Touching dimmer circuit is shown in the following diagram. It uses finger touch control pieceto realize turning on, off or stepless adjustment for incandescent light. It is used in the dimmer of filament lamp, small AC motor`s stepless speed regulation.. 🔗 External reference
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