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CPC Subgroup
H03K 17/60

the devices being bipolar transistors (bipolar transistors having four or more electrodes H03K17/72)

Full Title

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)

9 direct subcodes

Child Classifications

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  • H03K 17/615 in a Darlington configuration
  • H03K 17/64 having inductive loads
  • H03K 17/68 specially adapted for switching AC currents or voltages