摘要:
Disclosed is an automatic door actuator which comprises arithmetic unit for calculating a weight of a door, a distance of movement of the door and braking points of the door through learn control of door actuation which is effected once every time a power supply switch is turned on and irrespective of the on-off condition of a normal door actuation start switch; first memory for storing results of calculation by the arithmetic unit; second memory for previously storing various phase angles for starting operation, for deceleration braking operation and for predetermined low velocity control, corresponding to various weights of the door; whereby the control unit is responsive to the first memory to read out from the second memory the phase angles for starting operation, for deceleration braking operation and for predetermined low velocity control corresponding to the actual weight of the door determined in the learn control to thereby supply a trigger signal to semiconductor controlled rectifying elements in accordance with the read-out phase angles corresponding to the actual door weight and the distance of movement of the door and the braking points of the door determined in the learn control.
摘要:
A switching power-supply unit uses a time when a transformer voltage Vt inverts due to a rectifier diode (Ds1) entering a non-conducting state as a trigger, and a first switching control circuit (CNT1) turns on a first switching element (Q1) after a predetermined delay time passes. A second switching control circuit (CNT2) turns on a second switching element (Q2) using a time when the transformer voltage Vt inverts due to turning off of the first switching element (Q1) as a trigger. A third switching control circuit (CNT3) turns on a third switching element (Q3) using turning off of the second switching element (Q2) as a trigger. The first switching control circuit (CNT1) determines a period ton1 of the first switching element (Q1) such that a first output voltage Vo1 is set to a predetermined value. The second switching control circuit (CNT2) determines an ON-period ton2 of the second switching element (Q2) such that a second output voltage Vo2 is set to a predetermined value. The third switching control circuit (CNT3) determines an ON-period ton3 of the third switching element (Q3) such that a third output voltage Vo3 is set to a predetermined value.
摘要:
A switching power supply device includes a primary winding of a transformer that is connected in series to a first switching element, and a secondary winding is provided with a rectifier circuit and an output voltage control circuit arranged to detect an output voltage and feed it back to a control circuit. The control circuit is provided with an on-period control circuit arranged to turn off the first switching element in an on-state based on a feedback signal from the output voltage control circuit and an off-period control circuit arranged to control an off-period thereof by delaying turn-on of the first switching element based on the feedback signal.
摘要:
A home server according to the present invention includes: a storage unit for storing an operation item indicating a type of operation content of the remote operation, and operation data in which each operation item corresponds with necessity of an authentication; a transmission-reception unit for receiving the operation direction from the remote control terminal; an authentication necessity decider for deciding both the operation item and the necessity of the authentication based on the operation direction received and the operation data; and an authorization verifier for authenticating the operation direction as transmitted by the remote control terminal which has been authorized when the authentication necessity decider determines that the authentication is necessary.
摘要:
A self-excited oscillation type switching power source device is constructed such that when a power source switch is turned on, and the voltage of an input power source increases, the voltage at a point a is increased. When the voltage exceeds a predetermined voltage, a first transistor is turned on, and a second transistor is turned off. Then, a first switching element, when a starting voltage is applied to the control terminal thereof, is turned on, and voltage is developed in a first drive winding. This voltage is fed back to the point a via a feedback circuit. As a result, the transistor is accelerated to reach the on-state. The second transistor is accelerated to reach the off-state. As a result, the first switching element is rapidly turned on, and the oscillation is started.
摘要:
A transformer comprises first and second flat coils stacked with each other. Each of first and second flat coils comprises a conductive wire which is wound in a flat spiral shape having a through hole at a center thereof such that the conductive wire has an inner end and an outer end at an inner periphery and an outer periphery of the spiral shape, respectively. The inner end of the first flat coil passes through the through hole of the second flat coil, thus reducing the overall thickness of the transformer because both inner ends pass over only one flat coil.
摘要:
A switching power supply unit includes first and second switching circuits which alternately turn first and second switching elements on and off with an intermediate period in which both are turned off, and energy is stored in a primary winding of a transformer during an ON period of the first switching element and the energy is discharged from a secondary winding of the transformer during an OFF period of the first switching element. A control circuit includes an OFF period extending circuit connected to a control terminal of the first switching element, such that a transistor remains turned on for a desired period even after the energy has been discharged from the secondary winding, extending the OFF period of the first switching element for the desired period. In a light load operation, a phototransistor in the second control circuit is turned on so that the ON period of the second switching element will be shorter than the time required to discharge the energy from the secondary winding.
摘要:
A switching power supply apparatus has a transformer having a primary winding and a secondary winding, a first switching element connected in series with the primary winding, a first control circuit for controlling the on-time of the first switching element whereby the output is controlled, and a rectification circuit for rectifying the output from the secondary winding, whereby input voltage is applied to the first winding when the first switching element is on and causes current to flow therein so that energy is stored in the transformer, and the energy stored in the transformer is released as electric current from the secondary winding when the first switching element is off, and the current is rectified in the rectification circuit to obtain an output. The rectification circuit comprises a rectification diode, a second switching element connected in parallel to the rectification diode, a second switching element drive winding provided in the transformer to generate a voltage which causes the second switching element to be on, and a second control circuit for turning on the second switching element by use of a voltage from the second switching element drive winding, and turning off the second switching element after a time determined by a predetermined time constant by use of a further switching element connected to the control terminal of the second switching element.
摘要:
A device for hanging a garment in a vehicle includes a hook housing embedded in a vehicle wall and a hook supported by the housing either rotatable or slidable between its retracted position in which it is positioned within the housing and its hanging position in which it projects into the interior space of the vehicle.
摘要:
[Object] To provide a strain in natto-producing bacteria that is suitable for the production of soft natto (a fermented soybean product).[Means for Solving the Problems] A strain in natto-producing bacteria that is suitable for the production of soft natto is provided by isolating natto-producing strains from chungkookjang, which is a fermented food having been taken in Korea, and selecting an appropriate natto-producing strain using the stickiness and hardness of natto as indications. Different from the existing natto-producing bacteria, this strain is characterized by being capable of softening natto with the progress of the fermentation. Also, it is intended to provide a method of producing soft natto by using the above-described strain and the soft natto produced by this production method.