Are supercapacitors close to our lives?

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Are supercapacitors close to our lives? [Copy link]

With the rapid development of society, our lives are becoming more and more convenient and fast, and the credit goes to smart homes. Let's take a look at how smart our lives are.

With the rapid development of smart homes, single-live-wire smart wall switches ( with only a single live wire in / out, no neutral wire required ) have become an upgraded product of traditional mechanical wall switches, realizing intelligent control of lamps and electrical switches (such as voice-activated switches, touch switches, infrared remote control switches, human body sensing switches, mobile phone-controlled WIFI smart switches, etc.).

Functions close to life:

1. Turn on the light at a scheduled time to wake you up.

2. Human body sensing - the light will light up wherever you go.

3. Remotely turn off lights - no need to worry about forgetting to turn off the lights.

4. Turn on the light when the door is opened - the light will turn on automatically when the door is opened.

5. Turn off the light with one button - convenient and fast.

Although smart switches bring a lot of convenience to life, there are also certain problems in the internal control circuit of smart switches. According to common electronic knowledge, all electronic smart lighting switches need to consume a certain amount of current. When in standby mode, since the single-live switch draws power from the current flowing through the lamp to supply power to the control circuit of the smart switch, if the standby input current is too small, the standby circuit will not work properly. If the standby input current is too large, the lamp will still flicker or dim after it is turned off ( appearing the phenomenon of "not being able to be turned off" ) . In particular, high-impedance electronic energy-saving lamps and LED lamps are more sensitive to current.

According to the problems existing in the above-mentioned smart switches, the addition of supercapacitors has greatly improved the problems.

At present, many companies have solved this problem by connecting a supercapacitor in parallel with the signal transmission module, which is generally a supercapacitor of about 2.7V/1F . Its function is to absorb the tiny current in the circuit, solving the problem of weak current flowing through the load and causing the load to flicker, and charging the supercapacitor at the same time. When the smart switch is remotely operated, the supercapacitor provides the instantaneous large current required for the signal transmission module to transmit the signal, and can provide a certain amount of current to close and open the smart switch.

From the application of supercapacitors in smart switches, we know that the excellent characteristics of supercapacitors can also be widely used in other products in smart homes, such as smart curtains, smart hangers, etc. Supercapacitors are no longer unknown and invisible to everyone. They have become a product that is within reach and close to life.

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The supercapacitors I know about are those used in new energy vehicles. They charge quickly and only leak 1/3.

I heard that the electromagnetic catapult of an aircraft carrier also uses supercapacitors.

I think the home applications mentioned in the article are a waste of talent.