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HYA-0208DTB DVB-T digital TV antenna

HYA-0208DTB DVB-T digital TV antenna

HYA-0822GPS28C GPS+GSM combination antenna

HYA-0822GPS28C GPS+GSM combination antenna

HYA-0822GPS28A GPS+GSM combination antenna

HYA-0822GPS28A GPS+GSM combination antenna

HYA-0822GPS28A GPS+GSM combination antenna

HYA-0822GPS28A GPS+GSM combination antenna

HYA-GPSGLS28 GPS+Glonass dual system antenna

HYA-GPSGLS28 GPS+Glonass dual system antenna

HYA-GPSBDS28 GPS+BDS2 dual system antenna

HYA-GPSBDS28 GPS+BDS2 dual system antenna

HYA-0822GPS28C GPS+Beidou Dual Mode Antenna

HYA-0822GPS28C GPS+Beidou Dual Mode Antenna

Wide range of applications and features of DIP switches

Wide range of applications and features of DIP switches

DIP switches are widely used in overclocking of computer motherboards, FM matching of wireless communication, radio and television equipment, and computer software programming of automation equipment.

The working principle of reflective photoelectric switch

The working principle of reflective photoelectric switch

Block diagram of the working principle of the reflective photoelectric switch. In the figure, after the modulated pulse generated by the oscillation circuit is reflected by the circuit, the light pulse is radiated by the light-emitting tube GL. When the measured object enters the scope of the photoreceiver, the reflected light pulse enters the phototransistor DU. And in the receiving circuit, the optical pulse is demodulated into an electrical pulse signal, and then amplified by the amplifier and synchronously gated and shaped, and then the interference is eliminated by digital integration or RC integration. switch control signal. Photoelectric switches generally have good hysteresis characteristics, so even if the detected object shakes in a small range, it will not affect the output state of the driver, so that it can be kept in a stable working area. At the same time, the self-diagnosis system can also display the light receiving state and stable working area to monitor the work of the photoelectric switch at any time. Photoelectric DIP switch switch (photoelectric sensor) is the abbreviation of photoelectric proximity switch. It uses the occlusion or reflection of the detected object to the light beam, and the circuit is gated by the synchronization circuit to detect the presence or absence of the object. Objects are not limited to metals, all objects that reflect light can be detected. The photoelectric switch converts the input current into a light signal on the transmitter, and the receiver detects the target object according to the intensity of the received light or the presence or absence of it. The working principle is shown in Figure 1. Most photoelectric switches use infrared light waves with wavelengths close to visible light.

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