Sweep control circuit for oscilloscope

Details Sweep control circuit for oscilloscope Sweep control circuit for oscilloscope

1977-10-04

1979-03-20

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307228, 307247A, H03K 408

Patent

active

041456629

ABSTRACT:
A sweep control circuit for an oscilloscope comprises a gate control circuit such as flip-flop which is applied with a hold-off signal from a hold-off circuit and latched by a trigger input signal, a free running control circuit such as NAND gate which mask-controls the hold-off signal to control a free running at an automatic sweep mode and a ground free running at a normal sweep mode, and a single reset circuit which couples a differentiated pulse signal to the hold-off circuit at a single sweep mode. To the hold-off circuit may be coupled a sweep stop made establishing circuit and a circuit for reducing the rise time of the hold-off signal.

REFERENCES:
patent: 3215948 (1965-11-01), Dalton
patent: 3358159 (1967-12-01), Smith
patent: 3408580 (1968-10-01), Moriyasu
patent: 3432762 (1969-03-01), Porta
patent: 3718825 (1973-02-01), Matsuoka

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