Abstract:
Methods and apparatus to perform hard-disk drive head proximity detection in a preamplifier are described. One example method of detecting head position in a hard-disk drive includes obtaining a read signal from a head reading information from a disk; determining a signal envelope of the read signal; comparing the signal envelope to a first threshold to produce a first comparison; filtering the signal envelope; comparing the filtered signal envelope to a second threshold to produce a second comparison; combining the first comparison and the second comparison; and determining if the combination of the first comparison and the second comparison indicates head position oscillation.
Abstract:
A coin dispensing apparatus is provided which can detect a dispensed coin without lowering a dispensation speed of coins, even dispensed small-diameter coins without lowering a dispensation speed without damaging a coin detecting device. The coin dispensing apparatus has a throwing-out device and a noncontact type detecting device. A rebound member is provided against which the coin thrown out by the throwing-out device strikes, to rebound in a predetermined direction. The noncontact type coin detecting device continuously detects a coin before the coin strikes against the rebound member and after the coin rebounds.
Abstract:
An H-type bridge circuit includes four transistors, two resistors, and a write head. A write current supplied from a current supply circuit including a first of the transistors and resistors flows through the write head and is received in a current receiving circuit including a second of the resistors and a fourth of the transistors, and another write current supplied from a current supply circuit including the second of the transistors and the second resistor flows through the write head and is received in a current receiving circuit including the first of the resistors and the third of the transistors. Impedance of the write head matches an output impedance of the current supply circuit and matches an input impedance of the current receiving circuit.
Abstract:
In an impact type clamping apparatus including a motor unit for generating a pulsatory driving torque, a main spindle driven by said pulsatory driving torque to rotate a fastening member, a detecting unit for detecting a pulsatory torque applied to the main spindle, a calculating circuit for calculating a clamping force in accordance with a peak value of the pulsatory torque, and a control unit for stopping the operation of said motor unit when the calculated clamping force exceeds a desired clamping force, said clamping force is calculated not only from the peak value of the pulsatory torque but also from an increasing coefficient which represents a relationship between the peak value of the pulsatory torque and an increment of the clamping force. The increasing coefficient is gradually decreased in accordance with the increase in the clamping force, so that the clamping force can be calculated very accurately and the fastening member can be clamped with an actual clamping force which is very close to the desired clamping force.
Abstract:
A photosensitive coating composition comprising (1) a prepolymer containing radically cross-linkable ethylenically unsaturated double bonds and (2) a sensitizer which comprises predominantly a mixture of (a) benzophenone, halogenated benzophenone or a combination thereof and (b) 4,4'-bis(diethylamino)benzophenone in a weight ratio of about 1:2 to 10:1.
Abstract:
A coin storing apparatus with overflow chute apparatus is supplied with coins from a slot-shaped replenishing port to a coin storing portion and stores the coins in piles in the coin storing portion. The coins overflow via a downward overflow chute having a width equal to or larger than a diameter of a coin, when an amount of the coins in the coin storing portion reaches a predetermined amount. A downward slope wider than the diameter of the coin is disposed below the replenishing port. A guide rail is continuous with the downward slope and has a predetermined width narrower than a radius of the coin. A downward overflow chute extends at a predetermined angle to the guide rail and has a width equal to or larger than the diameter of the coin and is provided below the guide rail. The guide rail is disposed on the downward slope adjacent to a downstream side of the overflow chute. A coin dropped from the replenishing port comes in face contact with the downward slope, and then a lower face of the coin on a downstream side of the overflow chute slides on the guide rail to reach the storing portion, and the coins accumulated in the storing portion can be moved to the overflow chute.
Abstract:
A banknote storing system for providing an economical and space-efficient storage of banknotes of various sizes in a removable banknote storage unit is provided. A banknote transporting unit can move a banknote with a movable elongated belt unit to a position over a gap position on the removable banknote storage unit. The slider unit in the banknote storage unit can move relative to a movable elongated bank unit for forcing the banknote unit into a storage area. The slider unit can form a pair of U-shaped channels that are positioned above the gap for laterally receiving the banknote when transported by the movable elongated belt unit.
Abstract:
A banknote storing system for providing an economical and space-efficient storage of banknotes of various sizes in a removable banknote storage unit is provided. A banknote transporting unit can move a banknote with a movable elongated belt unit to a position over a gap position on the removable banknote storage unit. The slider unit in the banknote storage unit can move relative to a movable elongated bank unit for forcing the banknote unit into a storage area. The slider unit can form a pair of U-shaped channels that are positioned above the gap for laterally receiving the banknote when transported by the movable elongated belt unit.
Abstract:
In the bias circuit of a magneto-resistive element signal amplifying circuit, a favorable high frequency characteristic is obtained by suppressing the influence of a parasitic capacitance that is generated. Furthermore, noise is removed by a lowpass filter including a resistor and a capacitor having a relatively small size in an integrated circuit.