Optical tracer back-up circuit

Details Optical tracer back-up circuit Optical tracer back-up circuit

1978-01-16

1979-07-03

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

318577, G05B 100

Patent

active

041601580

ABSTRACT:
A circular scanning optical pattern tracer produces two impulses per cycle, one impulse in the forward direction and one in the reverse. Means are provided to utilize either one of said impulses selectively to cause the tracer to proceed in a given direction or reverse at will in accordance with the pulse selected.

REFERENCES:
patent: 3920316 (1975-11-01), Daguillon
patent: 4059788 (1977-11-01), Vasiliev et al.

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