CF1 (CF2) relay control circuit

The motor winding is connected to a triangular transfer capacitor cl-C^-3G
    DC Lan speed generator cs and the three-phase asynchronous motor is coaxially mechanically connected, and the excitation winding
is powered by ±10V. RP is connected to the input terminal of ST through a T-shaped network to provide negative feedback for speed measurement.
    8) Relay control circuit : As shown in Figure 2140. Relay K is amplified in two stages and then closed. The normally open and normally closed contacts of K are used to control the indicator light and short-circuit the capacitor
island on the WT ring respectively , making the WT ring become a P regulator.