This is a compact and highly portable power inverter Which has an excellent track record in the field of high frequency inverter. From the 12V/24V/48V DC outlet in your vehicle or boat, or directly from a dedicated 12V/24V/48V DC battery,this inverter can efficiently and reliably power a wide variety of house hold AC products, such as TV, Computers,Air-conditioner etc.
electric lamp automatic switch is based on a novel photoelectric switch photoelectric semiconductor element to design characteristics. It is mainly composed of a photoresistor sealed by CDs and integrated circuit.
the wireless doorbell without battery (passive wireless doorbell) The wireless doorbell without battery means that the transmitter uses energy capture technology, which can collect the energy when the user presses the doorbell button and convert it into electric energy to drive the doorbell sounder to ring. Its indoor unit That is, the doorbell sounder needs to be connected to the mains. The control signal generated by the doorbell button is transmitted through the wireless signal transmitter, and the wireless signal receiver of the indoor unit receives the wireless signal, thereby ringing.
The remote doorbell refers to the doorbell switch, that is, the doorbell transmitter and the indoor unit can be operated by wireless remote control. The remote doorbell is also called the wireless remote doorbell. The common remote doorbell has a wireless remote doorbell without a battery and a wireless wireless battery. Remote doorbell.
In China today, the price of smart doorbells can be used as a convenient and practical product. From the end of the 1990s to the present, it is mainly used in commercial residential buildings and security, but its rapid development has been generally entered. I went to a high-end residence in a residential area of ??a city. During the use, the occupants hear the ringtones, like receiving a visual phone call, accepting the call from the host through the downstairs door host, and the video extension can also receive video images through the host camera downstairs. The resident observes the monitor image on the extension display screen to confirm the identity of the visitor, and finally decides whether to press the unlock button of the indoor extension to open the electronically controlled door lock of the host at the link door, allowing the visitor to open the door.
The refrigerator protector is a socket type refrigerator protector, which mainly uses two-way controllable silicon as a power supply circuit as an automatic switch, and is equipped with a power supply indicator. The refrigerator protector has a simple design and a simple structure. At the same time, it has the characteristics of small size, light weight and low cost. Its function is to have various refrigerator protection functions of under-voltage, over-current, over-voltage and delay start. The operation environment of the refrigerator is guaranteed, the damage of the voltage to the compressor of the refrigerator is reduced, and the service life of the refrigerator is prolonged.
Multi-function sockets are used more and more in the society nowadays. The multi-function socket is easy to use, and it is very simple to arrange various plug-in interfaces on one panel. When not in use, the panel interface can be hidden to prevent dust from entering. Helps extend the life of the socket. Advantages of multi-function sockets and installation steps, the following small series one by one.
ABS engineering plastic ABS resin is a copolymer of acrylonitrile (A), butadiene (B) and styrene (S).
polycarbonate (PC) Polycarbonate is a new type of thermoplastic engineering plastics, polycarbonate has excellent electrical insulation properties and mechanical properties, especially for impact resistance, the toughness is very High, allowed to use a wide temperature range (-100 ~ 130 ° C), high transparency (referred to as "transparent metal"), non-toxic, convenient processing.
The modified sine wave inverter outputs a square wave alternating current of poor quality, and its positive maximum value to negative maximum value are generated at the same time, which causes severe instability effects on the load and the inverter itself. At the same time, its load capacity is poor, only 40-60% of the rated load, can not carry inductive load. If the load is too large, the third harmonic component contained in the square wave current will increase the capacitive current flowing into the load, and in severe cases will damage the load filter capacitor of the load.
The inverter itself consumes a portion of its power when it is operating, so its input power is greater than its output power. The efficiency of the inverter is the ratio of the output power of the inverter to the input power, that is, the efficiency of the inverter is the output power than the input power. If an inverter inputs 100 watts of direct current and outputs 90 watts of alternating current, then its efficiency is 90%.