Actual power describes the amount of energy consumed per unit of time by a power-using device during actual power usage. Peak power refers to the maximum power that a power supply can achieve in a short period of time, usually lasting only about 30 seconds.
An inverter is a DC to AC transformer, which is actually a voltage inversion process with a converter. The converter is to transform the AC voltage from the grid into a stable 12V DC output, while the inverter is to transform the 12V DC voltage output from the Adapter into a high-frequency, high-voltage AC; both parts also use the much-used pulse-width modulation (PWM) technology.
The core part is a PWM integrated controller, the Adapter uses the UC3842, the inverter uses the TL5001 chip. TL5001 working voltage range of 3.6 ~ 40V, its internal set of an error amplifier, a regulator, an oscillator, a deadband control PWM generator, low-voltage protection circuit and short-circuit protection circuit, and so on.
Expanded information:
The power of the speaker by the power amplifier chip power and power transformer power two main decisions, taking into account a number of other factors, it can be calculated that if the transformer's rated power is 100W, it can actually smooth the way. Driven by the power amplifier chip power to 45W or less, so by calculating the power relationship between the speaker transformer and power amplifier can also verify that the speaker's actual rated power can reach the nominal value.
Speaker power is not the bigger the better, applicable is the best, for the average home user of about 20 square meters of the room, the real sense of the 60W power (refers to the effective output power of the speaker 30W x 2) is enough, but the amplifier's reserve power the bigger the better, the best for the actual output power of two times more. More than twice the actual output power. For example, if the speaker output is 30W, the amplifier capacity is better than 60W, for HiFi system, the amplifier power to drive the speaker are very large.
Baidu Encyclopedia - Peak Power