Generating pulses having essentially a finite slope or stepped portions

HELECTRICITY H03Electronic circuits H03KPULSE TECHNIQUE

H03K4/00Generating pulses having essentially a finite slope or stepped portions

H03K4/02having stepped portions H03K4/023by repetitive charge or discharge of a capacitor, analogue generators H03K4/026using digital techniques H03K4/04having parabolic shape H03K4/06having triangular shape H03K4/063high voltage - or current generators H03K4/066using a Miller-integrator H03K4/08having sawtooth shape H03K4/085Protection of sawtooth generators H03K4/10using as active elements vacuum tubes only H03K4/12in which a sawtooth voltage is produced across a capacitor H03K4/14using two tubes so coupled that the input of each one is derived from the output of the other H03K4/16using a single tube with positive feedback through transformer H03K4/18using a single tube exhibiting negative resistance between two of its electrodes H03K4/20using a tube with negative feedback by capacitor H03K4/22combined with transitron H03K4/24Boot-strap generators H03K4/26in which a sawtooth current is produced through an inductor H03K4/28using a tube operating as a switching device H03K4/32combined with means for generating the driving pulses H03K4/34using a single tube with positive feedback through a transformer H03K4/36using a single tube exhibiting negative resistance between two of its electrodes H03K4/38combined with Miller integrator H03K4/39using a tube operating as an amplifier H03K4/41with negative feedback through a capacitor H03K4/43combined with means for generating the driving pulses H03K4/48using as active elements semiconductor devices H03K4/50in which a sawtooth voltage is produced across a capacitor H03K4/501the starting point of the flyback period being determined by the amplitude of the voltage across the capacitor H03K4/502the capacitor being charged from a constant-current source H03K4/52using two semiconductor devices so coupled that the input of each one is derived from the output of the other H03K4/54using a single semiconductor device with positive feedback through a transformer H03K4/56using a semiconductor device with negative feedback through a capacitor H03K4/58Boot-strap generators H03K4/60in which a sawtooth current is produced through an inductor H03K4/62using a semiconductor device operating as a switching device H03K4/625using pulse-modulation techniques for the generation of the sawtooth wave H03K4/64combined with means for generating the driving pulses H03K4/66using a single device with positive feedback H03K4/68Generators in which the switching device is conducting during the fly-back part of the cycle H03K4/69using a semiconductor device operating as an amplifier H03K4/693operating in push-pull H03K4/696using means for reducing power dissipation or for shortening the flyback time H03K4/71with negative feedback through a capacitor H03K4/72combined with means for generating the driving pulses H03K4/725Push-pull amplifier circuits H03K4/787using as active elements semiconductor devices with two electrodes and exhibiting a negative resistance characteristic H03K4/793using tunnel diodes H03K4/80using as active elements multi-layer diodes H03K4/83using as active elements semiconductor devices with more than two PN junctions or with more than three electrodes or more than one electrode connected to the same conductivity region H03K4/835using pulse-modulation techniques for the generation of the sawtooth wave H03K4/84Generators in which the semiconductor device is conducting during the fly-back part of the cycle H03K4/86using as active elements gas-filled tubes or spark-gaps H03K4/88using as active elements electrochemical cells or galvano-magnetic or photo-electric elements H03K4/90Linearisation of ramp Synchronisation of pulses H03K4/92having a waveform comprising a portion of a sinusoid H03K4/94having trapezoidal shape