Double-key touch switch
A touch and switch technology, applied in the field of two-button touch switches, can solve the problems that mechanical switches are not easy to use in automatic control circuits or instrument combinations.
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[0014] According to the manual attached figure 1 The present invention can be realized by implementing the working principle diagram of the circuit shown and the description of the accompanying drawings and the technical requirements described below.
[0015] Parameters and selection requirements of components
[0016] IC1 is a two-input four-NAND gate integrated circuit, the selected model is CD4011, and only three of them are used in the embodiment;
[0017] The power of the resistor is 1 / 8W metal film resistor, the resistance value of resistor R1 and resistor R2 are both 9.1MΩ; the resistance value of resistor R3 is 2.2KΩ;
[0018] The touch electrode No and the touch electrode OFF can be made of metal sheets with a size of 10mm×10mm respectively, and the touch electrodes can also be made by peeling a single core wire;
[0019] The operating voltage of the DC power supply in this embodiment is 12V.
[0020] Main Points of Circuit Making and Circuit Debugging
[0021] 1....
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