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Class Information
Number: 250/551
Name: Radiant energy > Photocells; circuits and apparatus > Signal isolator
Description: Subject matter including a light source and an optical link which couples the light source and photocell and wherein an electrical input signal applied to the light source is optically coupled to a detector which provides an electrical output signal having the characteristics of the input signal.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Patent Number Title Of Patent Date Issued
4228323 Variable loop length compensated barrier circuit Oct. 14, 1980
4227098 Solid state relay Oct. 7, 1980
4227078 Photo-sensor Oct. 7, 1980
4217598 Electroluminescent photodetector diode and busbar lines using said diode Aug. 12, 1980
4216487 Bidirectional light-activated thyristor having substrate optical isolation Aug. 5, 1980
4211929 Fiber-optical system for transmitting multilevel signals Jul. 8, 1980
4212023 Bilateral phototransistor Jul. 8, 1980
4208579 Electrically isolated control means for the illuminating source of a dental drill Jun. 17, 1980
4206368 Signal isolating technique Jun. 3, 1980
4197485 Optocoupler dimmer circuit for high intensity, gaseous discharge lamp Apr. 8, 1980
4190318 Optical slip ring apparatus utilizing radial light signals Feb. 26, 1980
4184070 Connector apparatus Jan. 15, 1980
4179619 Optocoupler having internal reflection and improved isolation capabilities Dec. 18, 1979
4178504 Balanced termination for a transmission line Dec. 11, 1979
4178515 Optical signal communicating apparatus Dec. 11, 1979
4176401 Digital communications system Nov. 27, 1979
4166959 Multi-channel rotating optical interface for data transmission Sep. 4, 1979
4160308 Optically coupled isolator device and method of making same Jul. 10, 1979
4160258 Optically coupled linear bilateral transistor Jul. 3, 1979
4158144 Circuit arrangement for the transmission of electrical supply power Jun. 12, 1979
4156148 Photocoupling structure for a solid state power control device May. 22, 1979
4149088 Electro-optical circuits and manufacturing Apr. 10, 1979
4149186 Method and apparatus for applying a scanning control signal to a television receiver Apr. 10, 1979
4143385 Photocoupler Mar. 6, 1979
4140914 Isolated signal conditioner Feb. 20, 1979
4139878 Apparatus for sensing a high phase signal from a multi-phase AC load circuit Feb. 13, 1979
4137543 Light detector arrangement Jan. 30, 1979
4136351 Photo-coupled semiconductor device Jan. 23, 1979
4135099 High energy, short duration pulse system Jan. 16, 1979
4129785 Solid state switch Dec. 12, 1978
4125777 Radiation emitter-detector package Nov. 14, 1978
4124860 Optical coupler Nov. 7, 1978
4122479 Optoelectronic device having control circuit for light emitting element and circuit for light receiving element integrated in a semiconductor body Oct. 24, 1978
4118633 Opto-electronic device having coupled emitter and receiver Oct. 3, 1978
4114177 Optically coupled device with diffusely reflecting enclosure Sep. 12, 1978
4112308 Optical coupling system Sep. 5, 1978
4110781 Bidirectional grooved thyristor fired by activation of the beveled surfaces Aug. 29, 1978
4109998 Optical sliprings Aug. 29, 1978
4107517 Opto-electric device Aug. 15, 1978
4104533 Wideband optical isolator Aug. 1, 1978
4103154 Electro-optical branching device and method of manufacturing the same Jul. 25, 1978
4100423 Opto-electronic two-way coupling Jul. 11, 1978
4100422 Light conductor in a signal isolator Jul. 11, 1978
4100562 Light coupled semiconductor device and method of manufacturing the same Jul. 11, 1978
4095116 Electro-optical coupling element Jun. 13, 1978
4081787 Prioritied photo-isolated digital data transmission system Mar. 28, 1978
4075512 Light pipe technique for grid pulsing Feb. 21, 1978
4074142 Optical cross-point switch Feb. 14, 1978
4065227 Control circuit Dec. 27, 1977
4063121 Input converter Dec. 13, 1977

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