Method of verifying preamplifier circuit functions, and...

Details Method of verifying preamplifier circuit functions, and... Method of verifying preamplifier circuit functions, and...

2007-06-19

2007-06-19

Dinh, Tan (Department: 2627)

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

C360S046000

Reexamination Certificate

active

11186823

ABSTRACT:
Disclosed is a preamplifier circuit of a magnetic record regeneration apparatus with a write system and a read system, certainly verifying a write function in a short period of time. The preamplifier circuit includes, in the write system, a write driver; a current-voltage conversion circuit for converting the write current from the write driver into a corresponding voltage; a waveform shaping circuit for converting the output voltage from the current-voltage conversion circuit into a full-wave rectified waveform; a peak-hold circuit for holding a peak value of the output from the waveform shaping circuit; a filter circuit for outputting an average voltage of the output from the waveform shaping circuit; and a determination circuit for determining that the write driver is abnormal based on each output status of the peak-hold circuit and the filter circuit.

REFERENCES:
patent: 4203137 (1980-05-01), Beck et al.
patent: 4634704 (1987-01-01), Janssens et al.
patent: 6101052 (2000-08-01), Gooding et al.
patent: 6952316 (2005-10-01), Tretter
patent: 61-10577 (1986-01-01), None
patent: 5-41041 (1993-02-01), None
patent: 05266441 (1993-10-01), None
patent: 11-16129 (1999-01-01), None
patent: 2003-157501 (2003-05-01), None

Affiliated with

Also associated with

Rating

Method of verifying preamplifier circuit functions, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of verifying preamplifier circuit functions, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of verifying preamplifier circuit functions, and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3844258