SU358968A1 - DEVICE FOR MEASURING THE WIDTH OF EFFECTIVE WORKING GAP OF THE MAGNETIC HEAD - Google Patents

Description

The invention relates to the technique of magnetic recording.

It is known that the loss of recoil at high frequencies by the reproduction of universal (universal) magnetic heads can be determined either by compiling the waveforms of the frequency measuring tape with known magnetization levels at each frequency, or by comparing with the reference head.

In obcons, the result is a significant measure of significant network errors (introduced by both the measuring tape and amplifiers), which values are commensurate with a certain amount of loss at high frequencies. Since the main share of loss spreads at high frequencies from holothichs to the head is the gap losses, which are uniquely determined by the effective width of the working gap, measuring the last fewer times allows for high accuracy of the notes at high frequencies.

Devices are known for determining and operating an effective working gap of a magnetic head, comprising an oscilloscope, amplifiers, a control magneto head, and a multichannel block transducer.

Boot gap. This is achieved by introducing a system of generators, multi-vibrators and keys, formative followers 1) and a number of frequency packets into the proposed device.

The drawing shows the block diagram of the described device.

3aniicH head / connected to recording recorder 2, which provides the necessary frequency ranges and coefficients of force. The playback head 3 is connected via a USNRO11315 unit 4 to an osloplograph 5, and a iiAUMOHUiM input for the BiieHUieii signal, which is connected to the same frequency with a 1 x hsn.ggle 6 signal, connected to an out-of-line out-of-line out-of-line out-of-line out-line out of line out of line out-of-one or one-to-one jack. The keys are 7, and the keys go right through, the pulses are filled with a low frequency signal, the pickup 2 is connected to the generators 8 of the sinusoidal fixed frequency and the multivibrator is waiting .9. (St1, which is determined by the required accuracy and range of measurement P1, p, -; are sequentially Taic, which is output,; sdiego pz them pmpulse goes on the first input. If the signal from your source and of his source is first multivibrator , he vy1) the abnormal ng coal pulse is given for the tandem, the rear of which triggers the next multivibrator. This process reaches the last multivibrator, and then cyclically repeats. The emulsifiers from the outputs of the multivibrators are supplied to the inputs of the corresponding keys 7. The pa in | 1cm of each pulse of each pulse is opened, and the input of the recording amplifier 2 is received and a series of pulses are received, with the frequencies from the corresponding generators 8. Zapsa The Sigialogram Amma is read by the KOirplah head and through the repro viewplate 4, the la opeplograph 5 and the selector amplifier 6 are received and then the input is entered into the throat of the oscillograph. The successor 6 pastoperap the frequency of the first oscillator 8, which allows the chip to scan the oscilloscope with the patch and miuls from the first key.

P re d m ate and g

A device for measuring the width of the effective working gap of a magnet head, 5 containing an oscilloscope, amplifiers, coitrol magnets, a skirt and a myogonalpng block, characterized by the fact that, with the acceleration and improvement of the quality of the measurement process, as well as ensuring its potential for visualization, it is possible A testable magnetic head is connected through an amplifier of a playback device to an oscilloscope connected to it and an auxiliary selection cell, and the control head is connected through a 5-second control device. records to myogapa.pnomu block 3ainicn, each channel of which is obtained from the electric key from the separate key of the generator and the standalone m.vibrator.

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