摘要:
In a current driving circuit which supplies a two-terminal load with current to be inverted in accordance with input information, a current driving circuit according to the present invention comprises a load whose one-side terminal has its potential fixed, circuitry to supply a non-fixed side terminal of the load with a direct current, and circuitry to supply the non-fixed side terminal with a current having a magnitude double that of the direct current and a polarity opposite to that of the direct current, while switching it in accordance with input information. Owing to such construction, the number of terminals to be led out from the loads can be reduced, and a load current can be inverted at high speed. In addition, reliability can be enhanced because the assembling process is simplified.
摘要:
A circuit for detecting the variation of resistance of a variable-resistance element comprises a pair of grounded-base transistors with their base electrodes provided with different base voltages and with their emitter electrodes connected to both terminals of the variable-resistance element so that the voltage between both terminals of the element is kept constant. The current density of the variable-resistance element does not vary when the resistance of the variable-resistance element varies, whereby the lifetime of the element can be prolonged.
摘要:
The present invention relates to the structure of a magneto-resistive head for reducing the spike noises generated in the head and for increasing the signal to noise ratio when the information is reproduced. In order to achieve the object, an electric conductor layer is disposed at both sides or one side of a magneto-resistive element, and the conductor layer is isolated from the element and connected to a DC potential.
摘要:
A readout circuit in magnetic recording device is disclosed, in which a test data signal for detecting an error in the characteristics of an automatic equalizer is recorded in a predetermined position of each track of a magnetic recording medium. In readout mode, a test data signal for a selected track is read out first, and this signal is compared with a reference signal dependent on the system conditions to determine an error from the reference signal. The optimum equalization coefficient is determined to eliminate this error from the reference signal and set in the equalizer. The data is readout under the optimum equalization characteristics thus set.
摘要:
Disclosed is a magnetic transducer using a magnetoresistance effect, comprising a magnetoresistive film, a hard magnetic film for applying a transverse biasing magnetic field thereto, and a conductive film through which current for applying the transverse biasing magnetic field to the magnetoresistive film flows. The conductive film may be either in electrical contact with or in electrical insulation from the magnetoresistive film. In this magnetic transducer, even when the heights of the respective constituents have changed, the transverse biasing magnetic field to be applied does not change considerably, and an optimum bias field strength is readily attained.
摘要:
A readout circuit in magnetic recording device is disclosed, in which a test data signal for detecting an error in the characteristics of an automatic equalizer is recorded in a predetermined position of each track of a magnetic recording medium. In readout mode, a test data signal for a selected track is read out first, and this signal is compared with a reference signal dependent on the system conditions to determine an error from the reference signal. The optimum equalization coefficient is determined to eliminate this error from the reference signal and is set in the equalizer. The data is readout under the optimum equalization characteristics thus set.
摘要:
A tom holder has a holder body, a pivoting member supported pivotably with respect to the holder body, and a rod, which projects from the pivoting member with the tom fixed to the rod. The tom holder has a pair of openings located at opposed positions. The tom holder is configured to be usable in either a first mode, in which the rod projects from the first opening, and a second mode, in which the rod projects from the second opening.
摘要:
A hi-hat bottom supports a bottom cymbal, through which a rod is passed, from below in a state fixed to the upper end of an upper pipe via a retainer. The hi-hat bottom has the retainer, a receiving plate, a compression coil spring, and a lock nut. When a foot plate is depressed, the compression coil spring urges a top cymbal and a bottom cymbal in such a direction that the cymbals contact each other. When the foot plate is not depressed, the bottom cymbal is inclined, together with the receiving plate, at a predetermined inclination angle with respect to a horizontal plane by the urging force of the compression coil spring.
摘要:
The present invention provides a pesticidal composition comprising a compound represented by the formula (I): wherein A, B, R, R1, R2, R3, R4, R5, R6 and R7 are as defined in the description, and 2,6-dichloro-4-(3,3-dichloroallyloxy)phenyl 3-[5-(trifluoromethyl)-2-pyridyloxy]propyl ether as active ingredients, and also provides a pest control method which comprises the step of applying an effective amount of the compound represented by the above formula (I) and an effective amount of 2,6-dichloro-4-(3,3-dichloroallyloxy)phenyl 3-[5-(trifluoromethyl)-2-pyridyloxy]propyl ether to pests or a place where pests inhabit.
摘要:
With respect to a lead detection method that uses rhodizonic acid, it is made possible to clearly identify pink or red coloration caused by a reaction between lead and rhodizonic acid even in cases where Sn is present in a specimen. To this end, an acidic aqueous solution or a buffer solution thereof (e.g., tartaric acid) in which hydrogen peroxide coexists is used as a reagent. Hydrogen peroxide oxidizes Sn2+ into Sn4+. Since Sn4+ does not react with rhodizonic acid, the presence of Sn does not interfere with the visual identification of any pink or red coloration caused by the reaction between lead and rhodizonic acid.