with semiconductor devices only

Full Title

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements > with semiconductor devices only

Child Classifications

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• H03F 3/06 using hole storage effect
• H03F 3/08 controlled by light
• H03F 3/10 with diodes
• H03F 3/14 with amplifying devices having more than three electrodes or more than two PN junctions
• H03F 3/16 with field-effect devices