Modulator - demodulator transformer coupled D.C. to one Mhz info

Details Modulator - demodulator transformer coupled D.C. to one Mhz info Modulator - demodulator transformer coupled D.C. to one Mhz info

1989-01-12

1992-03-17

Grimm, Siegfried H.

Modulators

Pulse or interrupted continuous wave modulator

Pulse amplitude modulator

324118, 329311, 330 10, 332116, H03K 702, H03K 902

Patent

active

050972294

ABSTRACT:
An analog direct current to one MHz information channel is provided, with high acccuracy and 10K volt input-output isolation. The information channel has a voltage to current converter which receives the analog input signal, and whose output is modulated by a square wave generator and provided to a center tap of the primary winding of a transformer. On the output side, the secondary winding of the transformer provides the signal to a precision rectifier which recovers the analog input signal.

REFERENCES:
patent: 2854633 (1958-09-01), DeJager
patent: 2902659 (1959-09-01), Ketchledge
patent: 3044025 (1962-07-01), McCauley
patent: 3187269 (1965-06-01), Runyan
patent: 3614668 (1971-10-01), Sudoh
patent: 3931582 (1976-01-01), Kato et al.
patent: 4490689 (1984-12-01), Jong
patent: 4758941 (1988-07-01), Felton et al.

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