G - Physics – 11 – B
Patent
G - Physics
11
B
179/17, 352/19.4
G11B 15/02 (2006.01) H04M 11/10 (2006.01)
Patent
CA 1048938
Abstract of the Disclosure A control current generator for generating control currents of different magnitudes representing respective functions, and having particular application in a central dictation system. A constant current generator generates a constant current whose magnitude is determined by the resistance connected to the constant current generator. A plurality of resistors having different values is provided to be individually connected to the constant current generator, and thereby establish the magnitude of the constant current generated thereby. In addition, a signal generator is provided for super- posing a characteristic signal onto the constant current generated by the constant current generator, this signal generator being selectively energized in response to the operation of predetermined control switches. When differ- ent control switches are operated, the constant current of corresponding magnitude is generated without the superposed characteristic signal.
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