When the touch delay switch is used, as long as the finger touches the electrode, the light will be lit, and the delay will be automatically extinguished after about 1 minute. It can directly replace the ordinary switch, without changing the indoor wiring. The right side of the dotted line of the touch delay switch circuit is the general lighting circuit, and the left part is the electronic switch part. VD1 ~ VD4, VS constitute the main circuit of the switch, IC constitute the switch control circuit. Usually, VS is in the off state and the light is not on. VD1 ~ VD4 output 220V pulsating DC by R5 current limit, VD5 voltage regulation, C2 filter output about 12V DC for IC use. At this time, the LED lights up, indicating the switch position, easy to find the switch at night. IC is a double D flip-flop, and only one of the D flip-flops is used to connect it to a monostable circuit. In steady state, pin 1 outputs a low level and VS is turned off. When the human hand touches the electrode M, the leakage current of the human body flows through the voltage division of R1 and R2, and its positive half circle makes the monostable circuit turn over, and pin 1 outputs a high level, and adds it to the gate of VS through R4, so that VS is turned on and the light is lit. At this time, the high output level of pin 1 is charged by R3 to the capacitor C1, so that the level of pin 4 is gradually increased until the end of the transient state, the circuit returns to the steady state, and pin 1 changes to the low level, VS loses the trigger voltage, and the AC is turned off when the AC passes zero, and the light is extinguished. Component selection IC should adopt CMOS digital integrated circuit CD4013, which is a double D flip-flop, only half of it is used in this circuit, and the other D flip-flop is suspended. VS with 2N6565, MCR100-8 and other small plastic sealed unidirectional thyristors, can control any lighting circuit below 100W. VD1 ~ VD4 is a 1N4004 ~ 1N4007 type rectifier diode. The LED can be used as a common red light-emitting diode, and the resistance is RTX type 1\/8W carbon film resistor. C1 and C2 are CD11-16V type electrolytic capacitors, and C3 is a ceramic capacitor. Make and use the printed circuit reference diagram, the touch sheet is made of tinplate, and a 2MΩ1\/8W resistor is welded, and then the wire is led to the circuit. The delay time of the switch is mainly determined by the values of R3 and C1, and the graphical data is about 1 minute. If the delay time is increased or decreased, the values of R3 and C1 can be increased or decreased. --------------- Scope of application: This product is suitable for corridors, corridors, basements, garages and other places of automatic lighting, safety, energy saving, convenient. Function features: 1, when using, just touch the metal sheet of the switch to work, and the switch will automatically close after a period of time. 2, application control, the switch automatically detects the insulation resistance to the ground, and the control is more reliable and correct. 3, no contact electronic switch, extend the load life. 4, touch the metal sheet pole zero line voltage is less than 36V human safety voltage, the use of harmless to human body. 5, the unique two systems design, directly replace the switch use, can drive all kinds of loads (fluorescent lamps, energy-saving lamps, incandescent lamps, fans, etc.) Delay the switch needs the current is very weak at this time the shoe is a conductor, just like the pen is used when wearing shoes
The touch delay switch is a kind of intelligent switch with delay shutdown function. To use, first connect the switch to the power supply, and then operate by touching the switch panel. The touch switch panel usually has a switch button and a delay setting button. Press the switch button and the lamp or appliance will turn on immediately. Press the delay setting button, you can set the delay off time, such as 10 seconds, 30 seconds, etc. During the set delay time, the lamp or appliance will remain on, and automatically shut down after the set time. The touch delay switch is applicable to scenarios that require delay shutdown, such as corridors and toilets.
The touch delay switch is a lamp controller that can be used to control the switching and brightness adjustment of indoor lights. It is used by installing it next to the lamp that needs to be controlled, and controlling the switching and brightness of the light by touching the switch panel.
Touch delay switch has a delay function, you can set the delay time of the light, so as to achieve the lighting and fading effect, increase the warmth of the light.
In addition, the touch delay switch also has a memory function, which can remember the status of the last switch, convenient for the user to use the next time.