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)

Child Classifications

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• H03K 17/002 +2 CPC CPC only CPC only
• H03K 17/04 Modifications for accelerating switching +2 CPC IPC+CPC Available in IPC and CPC
• H03K 17/06 Modifications for ensuring a fully conducting state +2 CPC IPC+CPC Available in IPC and CPC
• H03K 17/08 Modifications for protecting switching circuit against overcurrent or overvoltage +2 CPC IPC+CPC Available in IPC and CPC
• H03K 17/10 Modifications for increasing the maximum permissible switched voltage +3 CPC IPC+CPC Available in IPC and CPC
• H03K 17/12 Modifications for increasing the maximum permissible switched current +3 CPC IPC+CPC Available in IPC and CPC
• H03K 17/13 Modifications for switching at zero crossing (generating an impulse at zero crossing H03K5/1536) since 1980 +2 CPC IPC+CPC Available in IPC and CPC
• H03K 17/14 Modifications for compensating variations of physical values, e.g. of temperature +1 CPC IPC+CPC Available in IPC and CPC
• H03K 17/16 Modifications for eliminating interference voltages or currents +2 CPC IPC+CPC Available in IPC and CPC
• H03K 17/18 Modifications for indicating state of switch IPC+CPC Available in IPC and CPC
• H03K 17/20 Modifications for resetting core switching units to a predetermined state IPC+CPC Available in IPC and CPC
• H03K 17/22 Modifications for ensuring a predetermined initial state when the supply voltage has been applied (bi-stable generators H03K3/12) +2 CPC IPC+CPC Available in IPC and CPC
• H03K 17/26 Modifications for temporary blocking after receipt of control pulses IPC+CPC Available in IPC and CPC
• H03K 17/28 Modifications for introducing a time delay before switching (modifications to provide a choice of time-intervals for executing more than one switching action H03K17/296) IPC+CPC Available in IPC and CPC
• H03K 17/296 Time-programme switches providing a choice of time-intervals for executing more than one switching action and automatically terminating their operation after the programme is completed (electronic clocks comprising means to be operated at preselected times or after preselected time-intervals G04G15/00) since 1980 IPC+CPC Available in IPC and CPC
• H03K 17/30 Modifications for providing a predetermined threshold before switching (shaping pulses by thresholding H03K5/08) +3 CPC IPC+CPC Available in IPC and CPC
• H03K 17/51 characterised by the components used (H03K17/04 - H03K17/30, H03K17/94 take precedence) since 1980 +1 CPC IPC+CPC Available in IPC and CPC
• H03K 17/94 characterised by the way in which the control signals are generated since 1980 +1 CPC IPC+CPC Available in IPC and CPC