In fact, tapping the four-legged power switch is the same type of power switch as the common tact switch in our daily life. The four-legged tact switch cannot be locked during the entire application process. However, if you press it Once, the data signal of the four-corner power switch will produce a transition.
In fact, the principle is similar to the general knob switch. It is composed of a delay relay and a normally closed point. In the four-leg touch button switch, the effect of the delay relay is that when the working pressure exerts pressure on the delay relay, this The power supply circuit shows the connection state; when the working pressure of this type is removed, it is restored to the initial normally closed point, that is to say, it is cut off in vain. The force of this pressure is the gesture of using everyone's hands to open and close the buttons. In general, the working principle of the four-legged light touch key switch is still very easy to understand.
How to wire the tact switch?
Wiring method: A total of three wires will appear on the touch switch. The neutral wire of the live wire is connected to the power switch, and the other end of the power switch and the L end of the two-hole three-hole socket are connected to each other. The neutral point is immediately connected to the N terminal of the two-hole three-hole socket, and the other wire connector is connected to the three-hole grounding device terminal. The proper wiring method is that L is the power plug, L1 and L2 are the reciprocating lines of the dual-control switch, and N is the neutral line.
Look carefully at the order of the pins, AB is direct, CD is direct, and the middle of AC is the power switch. A and C are a group, B and D are a group. Press for AC and BD access. Under normal circumstances, AC access to BC access can actually be understood as a line.
The tact switch should have 2 terminals connected to the light, and the other three terminals are for the power switch. Find the terminal for the light and the terminal for the power switch, and then clarify which 2 terminals you use to connect the power switch. , immediately connect the light and the terminal of the power switch to be connected in series, so that when the power switch is connected to the light, it will light up. The four pins of the knob switch are respectively on and off and normally closed. It's the rules of the route.
In the case of carrying out 2 electric welding, you must carry out the second electric welding after the first electric welding is at room temperature, otherwise the continuous heating will cause the deformation of the outer field area, and the terminal will be damaged. Condition of loosening, falling off, and degraded electrical characteristics. This type of power switch is used for immediate practical operation by humans and does not have to be used for reflexive testing.
