NE555 delay module, monostable switch, delay switch-delay (12V) automobile electrical delay
One size: 77mmX23mm X 18mm length X width X height
Second, the main chip: NE555
Third, the working voltage: 12 volts DC; (additional 5V optional)
1, the module is powered up, the relay delay the pull.
2, adjustable delay time, default shipping (0-10 seconds) (need additional time can change the capacitor and resistor size to achieve) (another 20 seconds, 50 seconds, 100 seconds and 200 seconds optional)
4, the potentiometer adjusts the length of the output time of the delay time can be extended to increase the resistance value of the potentiometer.
5, increasing the capacitance C1 can increase the delay time
6, with input power indicator
7, with the relay is energized light
8 can be controlled AC 220V/10A equipment. (Maximum control equipment 2000W)
Application of occasions:
Vehicle equipment-delay, prevent car ignition current is too large to burn the vehicle equipment.
2 sequence start occasions, to prevent more than one device at the same time to start the current is too large burned electrical.
Explanation: recommends that customers used for the first time in the positive power supply series a forward connected diodes. Its role is to prevent the power supply reverse polarity burnt chips, secondly, to prevent fluctuations in the power supply voltage breakdown chip. (We did not did not add diode circuit because of fear of the power supply voltage is too low, coupled diode drop, cause the relay to pull-in voltage is not enough.)
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