Electrical Engineering Glossary Definition for Class G

Definition

Class G amplifiers are similar to class AB amplifiers except they use two or more supply voltages. When operating at low signal levels, the amplifier uses a lower supply voltage. As the signal level increases, the amplifier automatically picks the appropriate supply voltage.

Class G amplifiers are more efficient than class AB amplifiers since they use the maximum supply voltage only when required, while a class AB amplifier always uses the maximum supply voltage.

Synonyms

• rail-switching

See Also

• Amplifier
• Amplifier Class
• Class A
• Class B
• Class AB
• Class C
• Class D
• Class H
• Gain
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