Abstract:
There are circuits to reduce consuming power of an electric and electronic equipment; a circuit to control clocks( 4 ) for each device by a CPU, and to be variable by dividing clock, a circuit to access from the synchronous CPU to an asynchronous memory( 5 ) in high speed, a standby circuit connecting a relay( 2 ) to an AC to DC converter( 1 ) without any transformers and a communication circuit( 3 ) connecting to an external apparatus with photo couplers. By the above, these exclude futile power with high speed clock and loss of a transformer circuit.

Description:
FIELD OF THE INVENTION 
     This invention relates to the electric and electronic equipment with a clock circuit, a memory circuit and a standby circuit which opens and closes power supply in special condition. 
     BACKGROUND OF THE INVENTION 
     Here to fore, we have requested the electric and electronic equipment like a personal computer convenient functions, high speed operations and low consuming power. It is performed by including high integrated IC and exchanging the IC from NMOS to CMOS. 
     And now, we need higher speed and lower consuming power on standby. But the high speed clock and the loss of transformer circuit interfere this realization. 
     SUMMARY OF THE INVENTION 
     This invention is composed of a clock circuit which controls clocks by a CPU, a memory circuit which accesses to an asynchronous memory from the synchronous CPU in high speed, a standby circuit which runs by an AC to DC converter without any transformers and which drives an equipment by a relay circuit and a communication circuit connecting to an external appliance. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a whole figure of an electric and electronic equipment with this invention. 
     FIG. 2 is a circuit which controls docks for each device. 
     FIG. 3 is a circuit which changes frequency of clock by a counter and a multiplexer. 
     FIG. 4 is a concept figure of a memory circuit. 
     FIG. 5 is a write circuit in the memory circuit. 
     FIGS. 6 and 7 are AC to DC converter circuits without any transformers. 
     FIGS. 8 and 9 are AC to DC converter circuits which have many DC output sections. 
     FIG. 10 is an AC to DC converter circuit which switches transistors by detecting input voltage. 
     FIGS. 11 and 12 are relay circuits which use these AC to DC converters. 
     FIG. 13 is a relay circuit composed of transistors and diodes. 
     FIG. 14 is a communication circuit connecting to an external appliance with photo couplers and a transistor. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     This refers more particularly to this invention with the figures. 
     FIG. 1 means a general concept figure of an electric and electronic equipment with this invention. An AC to DC converter  1  without any transformers supplies power of a standby circuit which opens and closes a relay  2 . It is possible to communicate with an external appliance and a main circuit by a communication circuit  3  for connecting with photo couplers, and to be controlled by telephone line, infra red communication, a timer and sensors. In the main circuit, an  10  circuit connected to a CPU controls clock  4 . And there is high speed interface between the synchronous CPU and an asynchronous memory  5 . 
     Like FIG. 2 or  3 , when a CPU controls clock  6 , it is necessary to synchronize control signal  8  with input clock  6  by a flip-flop or a latch  7  to kill abnormal clocks like hazard or meta-stable in output clock. 
     FIG. 2 shows a circuit to stop docks for devices out of use. It is possible to separate into blocks and to stop docks for each block in the device. The inputs to an OR gate or an AND gate  9  are the control signal synchronized with input clock  6  and separation of the clock, and the output is dock for each device. It is possible to exchange an OR gate and an AND gate by using inverters. 
     FIG. 3 is a circuit to down frequency of clock  6  by dividing with a counter  10 . And it is possible to select frequency by a multiplexer  11 . The selection of clock is synchronized by a flip-flop or a latch  12  with output of an OR gate or an AND gate  13  inputed main and divided docks. 
     FIG. 4 is a concept figure of a circuit to access to an asynchronous memory from a synchronous CPU in high speed. Here to fore, there is a memory cell array for a bit data signal. In this invention, there are many memory cell arrays  15 (a number of outputs of a decoder  17  of low address  16 ) for a bit data signal  14 . It is selected by low address  16  which memory cell array is used. 
     At reading data, data in memory cell arrays  15  are read by upper address signal  18  and read signal  19 . And the data is output with a buffer or a multiplexer in IO circuit  20  by decoding low address  16 . 
     At writing data, like FIG. 5, output of the decoder  17  of low address signal  16  selects a flip-flop or a latch  21 , and the data is kept. At a time, write enable signal  24  is kept in a flip-flop or a latch  23  inputted write signal  22 , and the data is written to the memory cell array  15 . 
     Clock or strobe signal is necessary to make timing of signals. It is good to include the decoder  17  of low address in a CPU or an IC for memory interface for high speed interface with external memory. In this case, it is possible to include also the flip-flop or the latch  23  for keeping the write enable signal in the CPU or the IC for memory interface. 
     And it is possible to be faster by including sense amps of memory in the IO circuit  20 . 
     Next is a circuit which changes AC power to DC power without any transformers. 
     Though efficiency is not so good, resistors  25   26  are connected in series to AC power supply, divided potential of the resistor is rectified by a diode  27 , and is smoothed by a condenser  28 . It is possible to consume half wave by adding a diode  29  in the AC input section like FIG. 6, and to regulate voltage by exchanging the resistor  26  and the diode  27  to a Zener diode  30  in the DC output section like FIG.  7 . It is possible to get variety and efficiency of power supply by connecting many DC output sections like FIG. 8 or  9 . 
     FIG. 10 is a power circuit which switches a transistor  31  to get efficiency. Divided potentials of resistors  32   33  switch ON current by switching transistors  31   34   35  on condition that voltage of input power is within the range. The divided potential of first resistors  32  and a transistor  34  determine the highest voltage, and the divided potential of second resistors  33  and a transistor  35  determine the lowest voltage. It is useful to avoid wrong putting dry cells in DC power supply. For AC power supply, a resistor  36  to avoid rush current, diodes  27   29  and a condenser  28  are added. 
     A relay circuit is made by connecting a triac  37  or a relay  38  to an AC to DC converter of this invention, and by switching an added transistor  39  like FIG. 11 or  12 . 
     It is possible to operate a latching relay directly. A condenser  28  is charged at reset time and before or after operations, because current is limited by resistors  25   36  or a transistor  31  in AC to DC converters of this invention. It makes the relay OFF by detecting a power failure to avoid keeping power ON after a power failure. To detect a power failure, only a resistor or a photo coupler is connected to an AC to DC converter without any transformers. 
     It is possible to make a relay circuit by connecting transistors  40   41  and diodes  42  in forward and in series like FIG.  13 . It matches to AC power supply by connecting in reverse and in parallel about a PNP type transistor or a P channel type FET  40  and about a NPN type transistor or a N channel type FET  41 . It needs+ and− power supplies to control this relay, but it can control each half wave and closely. Using a bipolar transistor, it can control large current by Darlington connection or connecting a triac. Using a FET, it can control high power with low power, but you must be careful about leakage current and destruction in heat. 
     In case of making a standby circuit with an AC to DC converter without any transformers, it needs a photo coupler  45  to connect a main circuit  43  or an external appliance  44  like FIG.  14 . Signal line from an external appliance  44  is connected to the main circuit  43 , connected to the main circuit again through a transistor  46 , and connected to the standby circuit  47  through photo couplers  45 . When power of the main circuit is off or control signal  48  of the transistor is low, the signal from the external appliance  44  is transmitted to the standby circuit  47  through the transistor  46  and the photo coupler  45 , so the power supply can be opened and closed. When the control signal  48  is high, the signal is interrupted by the transistor  46 , so communication between the external appliance  44  and the main circuit  43  is possible. It is possible to communicate each other with two lines of signal and ground with resistors  49 . 
     POSSIBILITY IN INDUSTRY 
     Over look, it is possible to reduce consuming power of an electronic equipment including a high speed CPU with the clock circuit and the memory circuit in this invention. 
     And it is possible to applicate the standby circuit and the communication circuit connecting to an external appliance in this invention to all electric and electronic equipments.