The line out is thus usually not designed to source as much current as such a load would draw at normal line out signal voltages.

Normal logic gates usually rely simply on gain to push digital signal voltages away from intermediate values to the values that are meant to represent boolean '0' and '1'.

The signal voltage is converted via a formula to measure watts per square metre.

There are usually some electrochemical noise sources on every electrode, that need to be shorted out to allow the weak signal voltages to show clearly.

If several devices are chained in series in a logic path, a conventionally constructed gate may be required to restore the signal voltage to the full value.

This signal voltage is carried to a guitar amplifier that drives a loudspeaker.

Bias can move the diode's operating point higher on the detection curve to produce more signal voltage at the expense of less signal current (higher impedance).

Related ITU-T standards include V.24 (circuit identification) and V.28 (signal voltage and timing characteristics).

It then amplifies changes in the signal voltage to drive a loudspeaker or earphones.

For a distortion of 0.1% ( 80 dB), which is acceptable for high-fidelity sound equipment, the signal voltage should be within 500 mV.