Differansialsignalet

Differansialsignalet, also known as differential signal, refers to a method of transmitting electrical signals by pairing two complementary signals. In this system, one wire carries the positive or non-inverted signal, while the other carries an inverted version. The primary advantage of differential signaling is its ability to reduce electromagnetic interference (EMI) and noise, improving data integrity over long distances or in electrically noisy environments.

This technique is widely used in digital communications, audio systems, and high-speed data transfer applications. By measuring the voltage difference between the two conductors, differential signaling effectively cancels out any external noise that equally affects both wires, resulting in clearer signal transmission. Examples include Ethernet cables (like twisted-pair cables), audio interfaces, and USB connections.

Differential signals are typically carried over twisted pairs of wires or differential pairs in printed circuit boards to maximize noise immunity. The receivers interpret the difference in voltage as the actual data signal, making the system less susceptible to common-mode noise.

Overall, differential signaling enhances signal integrity, minimizes interference, and allows for higher data transfer rates in modern electronic systems. It is a crucial technique in ensuring reliable communication within complex electronic environments.