Today, these devices are fabricated as small integrated circuits, but the concept started long ago using vacuum tubes. There is a 1946 patent for an early use of op amp concepts (Reference 1), ...

They’re no good for audio but find a use in RF power amplifiers, where LC circuits filter out the resulting harmonics.) Most Hackaday readers will be familiar with the idea of pulse width ...

Maybe you are familiar with the op-amp as an extremely versatile component, and you know how to quickly construct a huge variety of circuits with one. Maybe you even have a favorite op-amp or two ...

Take note that the circuit C is to be connected between pins 1 and 5 of the IC. The power output is around 550 mW at 16 ohm speaker impedance. This audio frequency amplifier is ideal for small battery ...

Unlock the potential of the TDA2003 with a high-efficiency 10W audio amplifier circuit designed for clean and powerful sound output. This simple yet effective design ensures optimal performance ...

In a balanced op-amp circuit, the op-amp inputs see equal impedances looking into the circuit. Balanced circuits provide better performance by cancelling some input errors and have a simple R F /R ...

Usually targeted at audio applications, these circuit blocks find homes in all types of designs. Here’s a quick study of their operation and properties. Two of the most often used amplifier ...

Next, there is the (not so) small matter of the output filter: this is generally an L-C circuit (inductor & capacitor) placed between the amplifier and the speakers in order to mitigate the noise ...

Mark Levinson is a heritage American audio manufacturer with a history that dates back to the early 1970s. Based in ...