A Look at Some Audio Amplifiers

Audio amplifiers are crucial for allowing you to enjoy good sound quality from speakers. Modern audio amplifiers usually employ a technique which is called switch mode amplification. This is a fairly new phenomenon and employed by almost 90% of today’s power amplifiers. The crucial difference between this technique and the technique used by all the amplifiers is that the signal which is output by the amplifier actually undergoes a switching stage. This switching stage switches the output at a high-frequency between the supply voltage and ground. Following a filter, the sound will emerge.

The advantage of these switch mode amplifiers is the high power efficiency. That means that less power which is consumed by the amplifier will be wasted as heat. A direct consequence of this is the fact that switch mode amplifiers are less expensive and smaller than traditional power amplifiers. Another application of switch mode technology are car amplifiers. Car amplifiers are limited in their wattage by the voltage of car batteries. …