H03K 17/687 the devices being field-effect transistors
Introduced: January 1980
Full Title
Full titles differ between systems:
Electronic switching or gating, i.e. not by contact-making and -breaking > characterised by the use of specified components > by the use, as active elements, of semiconductor devices > the devices being field-effect transistors
Electronic switching or gating, i.e. not by contact-making and –breaking (gated amplifiers H03F3/72; switching arrangements for exchange systems using static devices H04Q3/52) > characterised by the components used (H03K17/04 - H03K17/30, H03K17/94 take precedence) > by the use, as active elements, of semiconductor devices (using diodes H03K17/74) > the devices being field-effect transistors
Of 7 combined children, 2 exist in both systems.
4 codes are CPC-only extensions, 1 exist only in IPC.
Note: 2 CPC extensions are marked as secondary classification only.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H03K 17/689 with galvanic isolation between the control circuit and the output circuit (H03K17/78 takes precedence) since 1990 +1 CPC IPC+CPC Available in IPC and CPC
- H03K 17/693 Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors (logic circuits H03K19/00; code converters H03M5/00, H03M7/00) since 1980 IPC+CPC Available in IPC and CPC