MHYV MHYVP MHYVR signal cable 2025

MHYV MHYVP MHYVR signal cable 2025

MHYVR: Communication flexible cable with poly insulation and poly chloride sheath for coal mines, used for ordinary signal transmission in mines, and can be used for mobile purposesMHYVP: Communication cable with poly insulation braided poly chloride sheath for coal mines, used for signal transmission in places with high electric field interference, suitable for fixed installationMHYVRP: Communication flexible cable with poly insulated braided poly chloride sheath for coal mines, used for signal transmission in places with high electric field interference. The wire is relatively softMHYBV: Communication cable with poly insulated galvanized steel wire braided armor and poly chloride sheath for coal mines, used for field cooperation main signal transmission with high mechanical impactMHY32: Communication cable with poly insulated steel wire armor and poly chlorinated sheath for coal mines, used for main signal transmission in level tunnels, vertical shafts or inclined shafts.

(1) When the frequency of the interfering electromagnetic field is high, the effect is achieved by utilizing the eddy currents generated in low resistivity metal materials to counteract external electromagnetic waves.(2) When the frequency of interfering electromagnetic waves is low, materials with high magnetic permeability should be used to confine the magnetic field lines within the body and prevent them from spreading into space.(3) In certain situations, when it is required to have good effects on both high-frequency and low-frequency electromagnetic fields, different metal materials are often used to form multilayer structures.

MHYVP-1 * 4 * 7/0.43MHYPP flame retardant signal cable specifications1×2×7/0.431×2×7/0.28 1×2×7/0.37 1×2×7/0.52 1×4×7/0.43 1×4×7/0.28 1×4×7/0.371×4×7/0.52 3×2×7/0.43 3×2×7/0.28 3×2×7/0.37 3×2×7/0.52 4×2×7/0.434×2×7/0.28 4×2×7/0.37 4×2×7/0.52 5×2×7/0.43 5×2×7/0.28 5×2×7/0.375×2×7/0.52 10×2×7/0.43 10×2×7/0.28 10×2×7/0.37 10×2×7/0.52

The selection of pull-up resistors for microcontrollers can be seen that in the reset circuit, when the resistor R1=10k, RST is at a high level, while when R1=50, RST is at a low level. It is obvious that R1=10k is an error, and the microcontroller cannot work when it is always in the reset state. The reason for this is that the RST pin contains a transistor, and even in the off state, there will be a small amount of off current. When R is set very high, a weak off current will pass through, resulting in a high level. The calculation problem of LED series resistance is usually for red chip LEDs: voltage of 1.6V-2.4V, current of 2-20mA, brightness changes at 2-5mA, and brightness remains basically unchanged above 5mA.

MHYV MHYVP MHYVR signal cable 2025