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D-C-Controlled-adjustable-ramp-signal-generator-and-method

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D.C. Controlled adjustable ramp signal generator and method

Details

Inventors: Fawkes, John S.; Umholtz, Walter F.;
Assignee: Ampex Corporation (Redwood City, CA)
Primary Examiner: Canney; Vincent P.
Assistant Examiner:
Attorney, Agent or Firm: Talcott; Joel D., Strnad; Elizabeth E.

Circuit and method for providing a D.C. controlled adjustable ramp signal which maintains a predetermined ramping period for respectively adjusted optimum signal levels within the operating range. An example of a circuit of the invention is described for providing an automatically controlled bias or erase ramp signal in a magnetic recorder.

DETAILED DESCRIPTION Consequently, it is an object of the invention to provide a circuit and method for generating a ramp signal which has a D.
C.
controlled adjustable level.
It is a further object to provide a circuit and method for generating a ramp signal having a predetermined ramping period which is maintained constant within a range of operating optimum signal levels.
It is another object to provide an automatically controlled erase or bias ramp signal generator circuit and method suitable for use in single channel or multi-channel magnetic recorders.
It is a further object to provide a circuit and method having the above-indicated features while being suitable for economical production.

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