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PCE
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DIFF Subgroup
H03K 4/12

in which a sawtooth voltage is produced across a capacitor

Introduced: September 1968

Full Title

Generating pulses having essentially a finite slope or stepped portions > having triangular shape > having sawtooth shape > using as active elements vacuum tubes only > in which a sawtooth voltage is produced across a capacitor

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

Child Classifications

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  • H03K 4/14 using two tubes so coupled that the input of each one is derived from the output of the other, e.g. multivibrator IPC+CPC Available in IPC and CPC
  • H03K 4/16 using a single tube with positive feedback through transformer, e.g. blocking oscillator IPC+CPC Available in IPC and CPC
  • H03K 4/18 using a single tube exhibiting negative resistance between two of its electrodes, e.g. transitron, dynatron IPC+CPC Available in IPC and CPC
  • H03K 4/24 Boot-strap generators IPC+CPC Available in IPC and CPC