Strong and weak power can be distinguished according to the processing object, appearance, AC frequency, transmission mode, power, voltage and current size to distinguish between other methods
Strong and weak power is the basis of the difference between the processing object is different, strong power processing object is the energy, which is often referred to as electricity, with high voltage, high current, high power, low frequency and other characteristics; weak power is mainly the object of the processing information (transmission and control), with low voltage, current, power, frequency and other characteristics.
2. Strong wire is the use of thicker plastic for the insulation layer, its copper core wire diameter, the inner layer of the copper conductor by a strand or strands of bare wire. Weak wire insulation is thinner, mainly because its voltage, current is not large, so the copper core wire diameter is smaller, is composed of more than 2 strands of insulated fine wire.
3. Strong and weak electricity are different from each other, but also have a certain connection, in a nutshell: high voltage, including strong electricity, strong electricity does not necessarily belong to the high-pressure; low voltage, including weak electricity, weak electricity must belong to the low-voltage; low-pressure is not necessarily strong electricity, strong electricity is not necessarily low-pressure.
4, AC frequency is different
The frequency of strong electricity is generally 50Hz, called "industrial frequency", that is, the frequency of industrial electricity; and the frequency of weak electricity is often a high frequency or ultra-high frequency, to KHz (kHz) or MHz (MHz) as a unit of measurement.
5, the transmission method is different
Strong electricity are transmission lines to transmit, weak electricity transmission method is divided into two kinds of wired and wireless, of which the radio is transmitted by electromagnetic waves.
6, power, voltage and current size is different
The power of strong electricity is in kilowatts, megawatts, voltage is in volts, kilovolts, current to ampere, kiloampere; while the power of the weak electricity is in watts, milliwatts, the voltage is in volts, millivolts, the current is in milliamperes, microamps, and its circuits can be used for printed circuits or integrated circuits.