Radiant energy – Photocells; circuits and apparatus – Signal isolator
Patent
1974-11-25
1976-04-20
Smith, Alfred E.
Radiant energy
Photocells; circuits and apparatus
Signal isolator
250214L, 250552, 307311, H04B 900, H03K 1914
Patent
active
039522059
ABSTRACT:
A light emitting diode is driven by an input signal and electromagnetically coupled to a photodiode. The photodiode is connected to a high impedance load across which is obtained a signal linearly related to but electrically isolated from the input signal.
REFERENCES:
patent: 3125693 (1964-03-01), De Clue
patent: 3770968 (1973-11-01), Hession
patent: 3772514 (1973-11-01), Sunderland
patent: 3786264 (1974-01-01), Ferro et al.
patent: 3818235 (1974-06-01), Johnson et al.
E. G. & G. Technical Data Sheet, HA-100, HAD-130, Printed 2/1968, 2 pp.
Colicchio David F.
Tobey, Jr. Morley C.
Hewlett--Packard Company
LaRoche E. R.
Park Theodore S.
Smith Alfred E.
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