H03K 3/353 by the use, as active elements, of field-effect transistors with internal or external positive feedback (H03K3/023, H03K3/027 take precedence)
Introduced: July 1974
Title
Titles differ between systems:
IPC: by the use, as active elements, of field-effect transistors with internal or external positive feedback
CPC: by the use, as active elements, of field-effect transistors with internal or external positive feedback (H03K3/023, H03K3/027 take precedence)
Full Title
Full titles differ between systems:
Circuits for generating electric pulses; Monostable, bistable or multistable circuits > Generators characterised by the type of circuit or by the means used for producing pulses > by the use, as active elements, of field-effect transistors with internal or external positive feedback
Circuits for generating electric pulses; Monostable, bistable or multistable circuits (H03K4/00 takes precedence; for digital function generators in computers G06F1/02) > Generators characterised by the type of circuit or by the means used for producing pulses (H03K3/64 - H03K3/84 take precedence) > by the use, as active elements, of field-effect transistors with internal or external positive feedback (H03K3/023, H03K3/027 take precedence)
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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