Low power recording instrument with two or more tracks

Details Low power recording instrument with two or more tracks Low power recording instrument with two or more tracks

1975-07-31

1977-03-29

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 68, G11B 502, G11B 544

Patent

active

040152901

ABSTRACT:
A battery powered load survey recorder for measuring electrical loads and providing a magnetic tape record of data with time reference signals in a format which is compatible for use with available data processing apparatus includes a data recorder circuit serving as a signal source for a data head of the recoder for recording the data, and a time recorder circuit serving as a signal source for a time head of the recorder for recording the time signals, current flow over the two recording heads being effected in a series arrangement to provide NRZ1 recording with reduced current drain, and the direction of current flow in each head being controlled only by it associated signal source.

REFERENCES:
patent: 3173134 (1965-03-01), Petermann
patent: 3512171 (1970-05-01), Hibner
patent: 3618119 (1971-11-01), Rodriquez
patent: 3763383 (1973-10-01), Johnson

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