The primary function of the photocoupler IC 802 is to provide feedback for error signals, enabling voltage stabilization control within the power supply circuit. Additionally, it isolates the high-voltage (hot) section of the switching regulator from the low-voltage (cold) section of the main circuit, ensuring electrical safety and preventing interference.
The light-emitting diode (LED) located between pins 1 and 2 of the optocoupler exhibits unidirectional conductivity. When tested with a multimeter set to the R×100Ω range, the forward resistance should be infinite. If the resistance between these two pins changes over time, it may indicate degradation or failure of the LED. As the current through the LED increases, the resistance between pins 3 and 4 decreases, which is a normal characteristic of the optocoupler's operation. Under normal conditions, the resistance between pins 1-2 and 1-4 should remain infinite.
Additionally, the photocouplers between pins 1-2, 6-5, and 6-4 are all constructed using PN junctions, which also exhibit unidirectional conduction properties. Between pins 5 and 4, there is a switching behavior: when pins 1 and 2 are energized, the internal transistor turns on, causing the resistance between pins 5 and 4 to drop significantly. This switching action is crucial for signal transmission and isolation in the circuit.
Understanding these characteristics helps in diagnosing potential issues with the optocoupler, such as faulty LED connections or degraded insulation. Regular testing and monitoring can ensure reliable performance and extend the lifespan of the component. It’s important to note that any deviation from expected resistance values may indicate a malfunction that requires further investigation or replacement.
1) Output power total 150W, Use High gain 5-6dBi for each omni antenna, shielding 500-1000m,Still depends on the strength signal in given area.
2) Each unit can counter up to 3 frequency bands simultaneously, each frequency band is separate and with adjustable power from max to off (0).
3) 100% safe VSWR over protection (isolator) for each modular.
4) Big aluminum alloy shell and cooling fans, not-stop to work.
5) IP54 Design for outdoor installation, Secure design to avoid sabotage.
2) Each unit can counter up to 3 frequency bands simultaneously, each frequency band is separate and with adjustable power from max to off (0).
3) 100% safe VSWR over protection (isolator) for each modular.
4) Big aluminum alloy shell and cooling fans, not-stop to work.
5) IP54 Design for outdoor installation, Secure design to avoid sabotage.
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