No battery time swith AC220V

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Shanghai
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10000pcs pc/month

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Q:Open the switch at once every time
School is used in the get out of class bell is the principle of digital control of the timer switch circuit, now widely used.
Q:The total power supply in the factory controls the switch in accordance with the specified time!
Brothers, so insecure! It is recommended not to do so. But also out of responsibility for production and safety.
Q:Relay, time relay, air switch, leakage switch, air with leakage, circuit breakers ,,, how to understand and distinguish between ah?
The relay is generally used as an auxiliary control loop; Time relay for delay or timing, the relay provides contact opening and closing; Air switch for the need to see the rated current, breaking short-circuit current. With the ability to break short-circuit current called circuit breaker; Leakage switch and air leakage switch the same (air as extinguished arc medium), with leakage protection.
Q:How close to the switch + time relay + solenoid valve
so even after the delay contact disconnect power supply immediately after the reset, and filter capacitor energy storage instantaneous power supply ,
Q:Corner in the touch delay switch Why switch the switch after the light is very short time
The new purchase is not necessarily the new factory, it may be put in the store for a long time, resulting in the capacitance capacity of the attenuation; there is also possible that the product quality is not the unqualified batch. It is possible to use energy-saving lamps or electronic fluorescent lamps, for non-support these two lights delay switch will appear difficult to use the situation, you try to replace the ordinary incandescent may be good. The lamp is not the case, and the switch can be opened, but the delay time is too short, it should be capacitive capacity attenuation, the same capacity with the voltage or slightly higher capacitance try, such as the original is 100uf 16V can be replaced by 100uf 16V or 120uf 16V, which is used inside the capacitance of the small, the general wholesale price of a few cents to buy should not expensive, the key is that you can find the purchase Local, electrical repair shop or electronic components firm's fortunately there will be Kazakhstan.
Q:How to adjust the time for the bells
Set the method as follows, A time for the 18:00, a set off 05:00, two open two off three open three off until ten open ten off the time to clear the time (because less than). And then set a good week, set the current time control switch, the time switch to automatically switch.
Q:Zhuhai to Macau a total of several points? What is the switch time of each gate?
3 bow north (most convenient but most people) Wan Chai (by boat / ticket 20) are generally 7:30 switch. The The Wanchai has fewer people because of the charges.
Q:Millet 4 automatic switch machine how to set up time
Into the [Security Center] application of the [power management] Enter 【automatic switch machine】 Turn on the auto switch and set the time
Q:How to use the microcontroller switch to control the length of the circuit section time
Use the timer inside the microcontroller to determine the time; use the microcontroller IO control port, to control the circuit off. Look at your question is the need for a clock chip DS1302 DS12C887 or PCF8563 like the RTC. MCU from the clock chip to read the current time, and you have to control the time contrast, you need to control the time, turn off or open the control circuit
Q:What is the difference between the inherent opening time and the full disconnection time of the high voltage circuit breaker?
Inherent opening time: no load time Full breaking time: with load opening time = no load sub-gate time + arc time

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