Electric sewing machine power saving circuit

The electric sewing machine power-saving circuit is as shown in the figure. The main components in the circuit are composed of Hall switch integrated circuit IC and relay K. Close
the switch os, turn on the power, and after R, Ci resistor-capacitor voltage reduction, silicon bridge UR rectification, G filtering, vs voltage stabilization, 12V DC
power supply is provided to the IC. When the operator does not step on the sewing machine, the magnet In the corresponding working position of the IC. K is powered on and closed, the normally closed contact is opened, and the sewing
machine is not powered on. The red light emitting diode LED lights up. On the contrary, when the sewing machine is operated, FI1
moves downwards under the magnet l fixedly installed on the clutch lever of the sewing machine . IC loses the magnetic field effect, its ③ pin is at high potential, K loses power and is released, the normally closed contact of the main circuit is reset, M runs, and the LED
goes out.