Application of resistor in life
Resistors are generally called resistors in daily life. Is a current limiting element, after the electrical blocking is in the circuit, the resistance of the resistor is fixed, which is generally two pins, which can limit the current size of the branch therebetween. The impedance resistor cannot be changed. The resistance variable is called a potentiometer or variable resistor. Resistors are used in life. Today, resistor production companies will lead you to find out the application of resistors in life.
When the external voltage exceeds a certain voltage value, the resistance will be sharply smaller. According to this special characteristic, it is widely used in household appliances, electronic circuits, and the Ouchu Electronic Resistor Production Company will give you a few examples.
1, TV machine lightning protection protection
At the time of thunderstorm, the lightning will introduce a TV through the outdoor antennas, causing high frequency heads, and even the TV is damaged. The two pressure sensitive resistors are installed on the outdoor antenna, which can effectively play the effect of lightning protection.
2. Overvoltage protection of semiconductor devices
In the semiconductor triode drive sensitive load, such as row output, frame output tube, etc. in the television. Or drive motor or electromagnetic mechanism, in turn, the sensing load generates an overvoltage at both ends, and the overvoltage will often cause the transistor breakdown.
3, sensual load anti-flutter protection
AC solids electrical appliances can isolate DC voltage control circuits and AC 220V. Since the boost transformer drives the neon light transformer, it will inevitably produce high-pressure self-sensitive power generation. A varistor can eliminate breakdown or damage caused by the AC solid state relay in the AC signal of the AC Solid State Relay.
4, relay protection
As an inductive mechanism, in an instant of excitation or demagnetization, at both ends of the coil are higher than the induced electromotive force above the operating voltage. And generate spark discharge, brings a big threat to relay contacts or coil insulation. On exciting coils and inductive loads, a pressure sensitive resistor can be greatly absorbed and protected from high induction electromotive and surge voltage.