by the use, as active elements, of vacuum tubes only, with positive feedback (H03K3/023, H03K3/027 take precedence)

Full Title

Circuits for generating electric pulses; Monostable, bistable or multistable circuits (H03K4/00 takes precedence; for digital function generators in computers G06F1/02) > Generators characterised by the type of circuit or by the means used for producing pulses (H03K3/64 - H03K3/84 take precedence) > by the use, as active elements, of vacuum tubes only, with positive feedback (H03K3/023, H03K3/027 take precedence)

Child Classifications

Navigate with arrow keys, Enter to open

• H03K 3/05 using means other than a transformer for feedback
• H03K 3/16 using a transformer for feedback, e.g. blocking oscillator with saturable core