Comb generators

Details Comb generators Comb generators

1986-04-30

1988-02-23

LaRoche, Eugene R.

Geometrical instruments

Scriber

Curved line

331 74, 331107A, 331108R, 307106, H03B 500, H03K 300

Patent

active

047273402

ABSTRACT:
A circuit for generating a succession of fast rising voltage pulses comprises an inductor connected between first and second circuit nodes, a step recovery diode connected between a reference potential level and the first circuit node, and a current switch having a first state in which it conducts current in one direction with respect to the second circuit node and a second state in which it conducts current in the opposite direction with respect to the second circuit node. An oscillator is connected to the current switch for alternately and repeatedly placing the current switch in its first state and its second state. Preferably, the oscillator comprises a SAW resonator having a high Q and a parallel LC tank circuit having a low Q, connected in a closed positive feedback loop.

REFERENCES:
patent: 3311812 (1967-03-01), Geiszler et al.
patent: 4199734 (1980-04-01), Dressen
patent: 4539530 (1985-09-01), Mizumura et al.
patent: 4638263 (1987-01-01), van Rumpt et al.

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