Electronic sensorsThis thing, a lot of people think it's just a pickle around the copper line, but it does a lot more work than you think. I've been doing power designs for over a decade and i've been dealing with telepathics more often than i've been talking to my family. To be honest, the sensor is oneHide electrical energy in the magnetic fieldThe device, it doesn't consume energy, it's just temporarily stored and returned. The article tries to use big words to explain exactly how the sensor works。
How does the sensor work
Once the current passes through the coil, it generates a magnetic field around the coil, which "eats" a part of the energy and converts electricity into magnetic energy. When you inject the current into the electric sense, the magnetic field gets stronger and the electric sense is "charging"; when the current is going to be reduced, the magnetic field is going to "show hands," which in turn drives the current to continue, so that it does not suddenly stop. In this processMagnetic fluxThe change is at the heart of the telepathic work, lxdi/dt=e, and the larger the sense value, the faster the current changes, the greater the sensory dynamic. The electrical senses you see on the pcb range from a few nh to hundreds of uh, the difference being coil numbers and magnetic cores, but the same logic at the bottom。
For example, electric sensors are like a turbine in the water. The currents come in, the turbines are rotated, the kinetic energy is saved. You suddenly turn off the tap, the turbines don't stop immediately, continue to turn by inertia, and then push the water — that's why electrical senses hinder the current mutation. In the actual circuit, the pwm switch is broken repeatedly, the sensor is re-enacted, deciphered and flattens the square into a more stable straight streamSwitch the powerIt's the core of the telepathy。
Why is the sensor blocking the current
Strictly speaking, it doesn't block the current itself. It's the currentChangeI don't know. When the current stabilizes, the sense is equivalent to a conductor and the direct current resistance is very small, with little effect on the circuit. But once you let the current go up or down, the sense creates a voltage in the opposite direction, dragging it like a brake. The faster the change, the greater the brake power. So, in the hf switch power source, the sensor values are selected in conjunction with the switch frequency, with small but large textures, and smaller current-printing waves are more restrictive than limits. I usually get the new guy to measure the two end voltages, and see that tipping point。
When i bring new people to draw, people often understand the senses as resistance, and it's like an instant analysis. Just grab one dot: the sense is stored in magnetic field energy, w=1⁄2li2, the energy cannot mutate, the current cannot mutate. All the fault design, saturated magnetic flux density in the magnetic core is writing about the energy storage cap. When you understand that magnetic fluxes can't jump, the electrical behavior becomes clear。
The sensor says it's a "buffer pad" between the magnetic field and the current. It's magnetic, it's electric. The principle of capturing the main line of magnetic flux continuity, whether it's a work frequency transformer or an mhz-class radio frequency strangulation. Next time you go over the circuit board and see that little square or circle, you don't have to go crazy。
