Demonstrator capable of delaying 30 seconds
A demonstrator and time technology, applied in the field of automatic control delay circuit, can solve problems such as lack of instruments, and achieve the effect of strong brightness, stable working performance and simple working circuit
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[0009] See figure 1 As shown, a demonstrator with a time delay of 30 seconds includes a time base circuit, a relay, a resistor, a capacitor, a diode, a button, a socket and a lamp holder, and the resistor includes a resistor R1, a resistor R2, and a capacitor Including capacitor C1, capacitor C2, and capacitor C3, the button is SB, the negative pole of the circuit is GND, and the positive pole of the circuit is VCC. One end of the button SB is connected to the positive pole VCC, and the other end is connected to the time base circuit, relay, and positive pole VCC in sequence. The time base circuit is an integrated block of NE555. After the resistors R1 and R2 are connected in series, one end is connected to pins 2 and 6 of the time base circuit together with the positive poles of the capacitors C1 and C2, and the other end is connected to the negative poles of the capacitors C1 and C2 together. The ground is connected to GND, pin 4 and pin 8 of the time base circuit NE555 are ...
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