H03K 17/60 the devices being bipolar transistors (bipolar transistors having four or more electrodes H03K17/72)
Introduced: September 1968
Title
Titles differ between systems:
IPC: the devices being bipolar transistors
CPC: the devices being bipolar transistors (bipolar transistors having four or more electrodes H03K17/72)
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 bipolar 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 bipolar transistors (bipolar transistors having four or more electrodes H03K17/72)
Of 9 combined children, 6 exist in both systems.
3 codes are CPC-only extensions.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H03K 17/605 with galvanic isolation between the control circuit and the output circuit (H03K17/78 takes precedence) since 1990 IPC+CPC Available in IPC and CPC
- H03K 17/62 Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors (logic circuits H03K19/00; code converters H03M5/00, H03M7/00) +7 CPC IPC+CPC Available in IPC and CPC
- H03K 17/66 Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will +2 CPC IPC+CPC Available in IPC and CPC