摘要:
An image display device, having a casing in which a television device and a video device are enclosed, includes a main circuit board having a first area for installing electronic parts of a power supply circuit and a second area for installing remaining electronic parts for TV and video device. Since the electronic parts of the power supply circuit are arranged within a separated area formed on the main circuit board, the electronic parts for the TV device and the electronic parts for the video device can be installed with high density and with no substantial interference with each other.
摘要:
A mechanical deck guide and a board guide for video in which a video set and a print board for video are provided integrally with a front cabinet, and a board guide for television is disposed in an array with the board guide for video. A shield plate is provided on the mechanical deck guide so as to cover it.
摘要:
A mechanical deck guide and a board guide for video in which a video set and a print board for video are provided integrally with a front cabinet, and a board guide for television is disposed in an array with the board guide for video. A shield plate is provided on the mechanical deck guide so as to cover it.
摘要:
A brush motor has a magnetic sensor provided for detecting a change in a field magnet occurring in correspondence with a change in a rotational position of a rotor core.
摘要:
A switching power supply includes a rectifying and smoothing circuit 6 coupled to an inductor L1 and a zener diode D2 coupled to the output of the rectifying and smoothing circuit 6. An internal resistor on the inductor L1 side viewed through the rectifying and smoothing circuit 6 is employed as a serial resistor for generating the voltage drop which is required for the zener diode D2 to absorb voltage fluctuation, whereby the voltage of the DC output 22 is stabilized.
摘要:
A tape end detecting device for detecting the end of the tape enclosed within a cassette includes a light emitting element for generating a light pulse signal, a pair of light receiving element, a light guide means comprising a central prism and a pair of side prisms disposed at both sides of said cassette loaded in position, and a tape end signal generating circuit adopted for generating a tape end detecting signal only when it receives the light pulse signal. Therefore, the tape end detecting device operates to generate an output upon receipt of the light signal, but does not generate when the light coming from outside is received.
摘要:
There is provided a video signal apparatus capable of preventing a vertical wobble of the screen from causing discomfort to users. The video signal apparatus comprises: a first signal switching section 11 for switching between a first solid video signal 41 that includes a synchronizing signal having the same timing as a synchronizing signal of a first video signal 31 as well as represents a solid image and the first video signal 31; and a second signal switching section 12 for switching between a second solid video signal that includes a synchronizing signal having the same timing as a synchronizing signal of a second video signal as well as represents a solid image and the second video signal, the apparatus being adapted to output the first solid video signal (second solid video signal) from an output changeover switch 3 for a predetermined time period immediately after the switching to subsequently switch to the first video signal (second video signal) when a video signal to be output from the output changeover switch 3 is switched from the second video signal (first video signal) to the first video signal (second video signal).
摘要:
In a magnetic tape apparatus, a cylinder motor and a capstan motor are provided separately. A family processing is realized by fabricating a stator core of the capstan motor by using the same die which is used for fabricating a stator core of the cylinder motor. Each of attachment pieces is fitted into the corresponding one of recess portions provided at a flange-shaped attachment portion of a bearing holder and the inner end of the attachment piece is engaged with a rib provided at the flange-shaped attachment portion. The inner end portion of the attachment piece is screwed with the flange-shaped attachment portion.
摘要:
A video signal processor which includes a reference signal generating circuit provided with at least an oscillation circuit for generating a reference signal corresponding to a burst signal and a Y/C separation circuit for separating a video signal into a luminance signal and a chrominance signal with an output of the reference signal generating circuit as a clock signal, and uses a microcomputer for controlling the entire operation of the video signal processor. In the video signal processor, an output of the reference signal generating circuit is also supplied to the microcomputer as a clock signal.
摘要:
An oscillation circuit 1 for controlling the on/off operation of a main switching element 5 is arranged to include a first inductor L1 coupled at its one terminal to a DC power supply, an oscillation switching element Q2 for opening and closing the connection between the ground level and the other terminal of the first inductor L1, a second inductor L2, inductively coupled to the first inductor L1, for generating a feedback output for turning on the oscillation switching element Q2 when the oscillation switching element Q2 is turned on, and a voltage stabilizing circuit 2 for detecting an error voltage of a DC output 22 and, when the error voltage thus detected represents increase of a voltage of the DC output 22, for reducing a level of the feedback output induced to the oscillation switching element Q2 in correspondence to an amount of the increased voltage.