Electric massager circuit

Most electric massagers use AC power supply (220V, 50Hz), and their power consumption is not large 5N35W. The T-tube wing has the characteristics of inverting the south, significant effect
, and wide clinical adaptability. g/ Only use your hands extensively to manage your braids in the hospital: Business and braiding room. Barber shop: also commonly
used by sports teams and family ball games. . '_: . ':． ． ,'.
    The working principle of the electric massager is: when the power is turned on, the motor starts to rotate, and its rotational force drives the eccentric wheel to rotate through the coupling spring.
Since the center of gravity of the eccentric wheel is offset from the axis, it produces not only the Shake the enzyme quickly. Install the appropriate massaging device on the massager, and locate the area that needs to be massaged
    : - 1.
The area to be massaged. A more ideal massage effect can be achieved by high-speed vibration.
    Electric massagers usually use small carbon brush motors, which have high speed and large torque. It is an AC and DC dual-purpose motor with a speed of about
5000-1000r/min. Since the massage head is directly affected by the vibration generated by the rotation of the eccentric wheel, the number of massages is the number of turns of the motor.
The electric massager has a device to adjust the strength of the massage force. The higher the motor speed,
the greater the rocking force generated by the eccentric wheel, and the stronger the massage force generated by the massage head;
conversely, the massage force generated by the massage head is weak. When the input voltage to the motor is high
. Its rotation speed is high; when the input voltage decreases, the rotation speed also decreases. Usually
, a diode is connected in the circuit, and
the connection form of the components in the circuit is changed through different positions of the switch, thereby changing the voltage input to the motor, and
the speed can be changed. The electric massager circuit is shown in Figure 1-33.
    It can be seen from the circuit diagram that when the power switch SB is in the "off" position, the circuit is not open and the motor does not rotate. When switch SB is half-wave rectifier,
the input voltage of the motor is low, so the speed is low. When the switch is turned to the strong position, the alternating current is rectified without half-wave rectification, and the motor input voltage is
twice that of half-wave rectification. The voltage is high and the motor speed is the highest. In the circuit, L, K, C form an anti-interference circuit . Prevent sparks generated when the motor 's carbon brushes rub against the commutator from interfering with radios or other electronic equipment.