A novel converter circuit converts AC input voltage within the range of 85-260 VAC to a constant voltage, current limited DC output voltage wth substantially no input voltage, all without the use of a transformer or input voltage-select switch. The AC input voltage is inputted directly to a rectifier and then to the input of a phase-controlling element (SCR) for controlling the phase of the unfiltered rectified signal. A trigger signal-generating circuit generates a trigger signal for regulating...

The present invention is constructed with a TV processing stage (1), a camera-image processing stage (2), a micom-video processing stage (3), an image-processing stage (4) and a switching state (5) on the cooking apparatus. Therefore the user can watch TV programs and can observe selected area through video cameras without leaving the cooking area. The user can also identify the automatic cooking information on TV screen. The micom-video processing state (3) performs a converting function that c...

A battery charging circuit, which can charge storage batteries upto the required voltage level, and prevent them from being overcharged by use of a thyristor, a temperature sensor and a current regulation means. The circuit uses a regulated switched B.sup.+ supply which is controlled by a transistor which is switched on and off by control of the thyristor. The circuit of the present invention consequently can protect not only the storage batteries themselves, but also the electronic circuits and...

An aluminium-base alloy for head drum of video cassette recorders(VCR), which contains copper, magnesium, nickel, silicon, iron and Titanium+Boron and to which chromium is added optionally. The proposed alloy is characterized in that thermal expansion coefficient is less than 20.0.times.10.sup.-6 /.degree.C., hardness after heat treatment is more than 145(Hv) and dispersion of precipitates smaller than 7.5 micron in size is more than 95%.

A power relay control circuit for a microwave oven including a microprocessor as its controller is provided, wherein two power relay driving transistors are to be turned on or turned off by a thyristor, which is triggered by a switching transistor, and a stabilizing circuit respectively. Two signals of different levels from terminals of the microprocessor are supplied to the base of the switching transistor and the stabilizing circuit in order to make the oven start heating operation. If the mic...

An apparatus for quick starting of tape forwarding-and-rewinding operation for video cassette recorders, wherein fast-forwarding or rewinding operation of a video tape can be quickly started, because loading plates, which are locked in loading holes as during the recording or reproducing operation, keep the tape being loaded on a head drum, while the tape can be wound by only the driving force to rotate one of the reel discs, because two guide grooves in different shapes are provided on upper an...

A cassette ejector for a video cassette recorder, including an actuation plate actuated by a side plate when a loading motor moves a pinch roller, thereby to release locking of a cassette holding member. The actuation plate has a push element and a pushed element extending therefrom and is formed with first and second through-holes in which first and second levers are respectively fitted. The first lever has a cam-like projection and a press-element provided thereon, and the second lever has a t...

A motor installed on a wall of a cassette housing operates a placement gear and a rotating member for safely placing a cassette holder on a deck and then also operates a ring gear, which is installed on the deck, in order to load video tape for reproduction, thereby making it possible that both the action of placing the cassette holder on the deck and the action of loading the tape for reproduction can be achieved by using only one motor. A combination of a sector gear and a cam or a disc with a...

There is disclosed a method for printing the frame of a color television by using the liquid crystal color filter. The liquid crystal color filter serves to form the frame of complementary colors. Projecting the light beams of a light source on said frame of complementary colors of said liquid crystal color filter makes the original colors reappear, thereby the frame being printed on a printout paper.

Amorphous Nickel-base alloys for electrical resistors, which contain, by atomic %, 81-x% Ni, x% Cr, 6% B and 13% Si (z=0.about.25), or 70% Ni, 11% Cr, 19-y% B and y% Si (y=0.about.19 except 13), or 100-z% of 0.864 Ni and 0.136 Cr and z% of 0.316 B and 0.684 Si (x=15.about.25 except 19), and have a relatively high electrical resistivity and a small temperature coefficient of resistivity, are disclosed. Their resistance values can be adjusted by heat treatment and the thermal stability of them aft...