SU1304059A1 - Device for magnetic recording - Google Patents

Abstract

The invention relates to the accumulation of information and allows improving the noise immunity of the device. The bias current passes to the common pin 7 through the adjustable conductor 9 and the capacitor 8, since they have the minimum resistance value in the frequency of the first harmonic of the bias current. The current of the sound signal, coming along the write current terminal 2, passes through the recording magnetic head 1 to the common bus 7 through the coil 5 of the adjustable inductance. The currents of the sound signal and bias form a magnetic field in the recording magnetic head 1, which provides a magnetic recording of the sound signal on the magnetic recording media. 1 il. 4 U OO O ate with

Description

The invention relates to the accumulation of information, namely, devices for magnetic transmission.

The purpose of the invention is to improve the noise immunity of a magnetic recording device.

The drawing shows a device for magnetic recording.

The device contains a recording magnetic head 1 connected first

It is passed to the common bus 7 through the additional coil 9 of the adjustable inductance and the second capacitor 8, since they have the minimum resistance value at the frequency of the first harmonic of the bias current.

the inductance and the first capacitor 6 are connected to a common bus 7 connected to the first terminal of the second capacitor 8. The device also contains an additional audio signal coming through the input bus 2 of the recording current, passes through the recording magnetic head 1, but

output to the input bus 2 write current and o passes through an additional coil - connected by the second output directly- In the regulated inductance and the second

with the first pin of the trimming re-capacitor 8. The latter is explained by

of the resistor 3 connected by the second terminal, the resistance of the additional coil 9

the input bus 4 of the bias current, and the adjustable inductance and the second terminal of the coil 5, adjusts the sensor 8 much higher than the resistance of the inductance and the first capacitor 6. 15 The recording magnetic head 1 The second terminals of the coil 5 of the controlled and high frequencies of the audio signal. The current signal passes on a common bus 7 through the coil 5 adjustable inductance, as compared to

    the first capacitor 6 on the upper part of the coil 9 adjustable inductance, the current of the audio signal, it has

directly connected first and wto is a minor resistance

The eye pins, respectively, with the first current of the sound signal and the current by the magnetic output of the recording magnetic head 1 are formed in the recording magnet and the second output of the second capacitor 8. the head 1 is a magnetic field, provide an adjustable inductance coil 5 and 25 a magnetic recording of the sound signal — the second capacitor 6 forms a parallel magnetic recording carrier ,

tuned resonant circuit tuned

Claims (1)

frequency of the first current harmonic Podmag-Formula of the invention A magnetic recording device containing an additional 9 adjustable reel roller with a magnetic recording head, inductance and the second capacitor is connected by the first output to the input blocking element in the form of post-write current bus and connected by the second output directly to the first output of the trimming resistor connected to the second output of the bias current input busbar, and to the first terminals of the adjustable inductance cable and the first capacitor connected directly to the common busbar connected directly to the first output of the second capacitor, characterized in that in order to regulate its value. Current-increase noise immunity of the device, In this case, the additional reel-inductance coil and the first condensation-inducible inductance, directly torus 6, since they are at the frequency of its per-connected first and second pins The harmonics are infinitely large with the first output of the recording resistance, but pass through the recording magnetic head and the second output magnetic head 1. The current is generated by the secondary water of the second capacitor. a resonant resonant circuit tuned to the frequency of the first harmonic of the bias current. The magnetic recording device operates as follows. The high-frequency bias current flowing through the input bus 4 of the bias current passes through the trimming resistor 3, through which It is passed to the common bus 7 through the additional coil 9 of the adjustable inductance and the second capacitor 8, since they have the minimum resistance value at the frequency of the first harmonic of the bias current.