using a single semiconductor device with positive feedback through a transformer, e.g. blocking oscillator

Full Title

Generating pulses having essentially a finite slope or stepped portions > having triangular shape > having sawtooth shape > using as active elements semiconductor devices (H03K4/787 - H03K4/84 take precedence) > in which a sawtooth voltage is produced across a capacitor > using a single semiconductor device with positive feedback through a transformer, e.g. blocking oscillator