Touch switching circuit capable of being switched off in delayed manner and with controllable delay time
A technology of delay closing and touch switch, applied in circuits, electronic switches, electrical components, etc., can solve problems such as inability to develop with smart home appliances or supplies, lack of signal collection points and control points, and inconvenience for the use of intelligent control programs. , to achieve the effect of convenient signal acquisition and control points, adjustable delay time, and reasonable circuit design
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Embodiment 1
[0021] Example 1: See attached figure 1 , the touch switch circuit with a controllable delay time delay provided in this embodiment is composed of a normally closed relay drive circuit S, an adjustable resistor R1, 2 sampling resistors R1, R3, and 2 single MCR100-8 models. It consists of thyristor SCR1, SCR2, electrolytic capacitor C, switch tube mosfet, two touch pieces ON, OFF, load P, and DC power supply VCC-GND; the ground terminal of load P is connected to the location GND of DC power supply VCC-GND; One end of the capacitor C is correctly connected to the ground GND of the DC power supply VCC-GND.
[0022] One of the one-way thyristor SCR1 is used as an opening switch, and the cathode of the one-way thyristor SCR1 as an opening switch is connected to the non-ground terminal of the load P, and the control terminal of the one-way thyristor SCR1 as an opening switch is connected to a touch The slice ON is connected, and the switch K of the normally closed relay drive circu...
Embodiment 2
[0028] Implementation example 2. On the basis of implementation example 1, the load P is set as a relay drive circuit to realize the control of high-power circuits.
[0029] The invention can be directly applied to the manufacture of intelligent lamp control circuits.
[0030] The delay-off touch switch circuit with controllable delay length provided by the present invention has a reasonable design, can delay close, and the delay time is adjustable, and has convenient signal collection (sampling) points and control (adjustment) points, which is convenient It can be directly used in conjunction with an intelligent control program, or directly as a part of an intelligent control circuit, and can be widely used in the manufacture of intelligent home appliances such as lighting, air conditioners, and televisions.
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