JP2006122201A - Power source apparatus and game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize the commonalization of a power source apparatus used for a game machine by enabling a control board which receives a supply of the stabilized direct voltage from the power source apparatus to select the voltage output from the power source apparatus by itself. <P>SOLUTION: The power source apparatus which supplies the stabilized direct voltage to the control board for controlling a game machine is characterized to supply the stabilized direct voltage to the control board by mounting a voltage detecting circuit to divide the direct voltage supplied to the control board on the control board, executing the feedback input of the detection value divided by the voltage detecting circuit, and comparing the detection value with the prescribed reference voltage. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a power supply apparatus that supplies a stabilized DC voltage to a control board in a gaming machine such as a pachinko machine or a slot machine.

  In recent gaming machines, not only diversification of game contents (game characteristics), but also liquid crystal display devices, high sound quality speakers, lamps (LEDs), etc. in order to enhance the excitement by giving a sense of power and presence. A wide variety of productions are made using various modules and devices.

  For example, a pachinko machine or a slot machine includes various modules and devices for executing a game, and a control device that drives and controls these modules, and the control device controls the entire game processing operation. The main control board includes a main control board, and a sub control board that is provided separately from the main control board and controls game effects including image display and sound output based on control signals from the main control board. The sub-control board is specifically based on a control signal from the main control board, display control in the liquid crystal display device, output control of sound from the speaker, lighting control of lamps and LEDs (lamp effect). Etc., and various effects for enhancing the interest according to the type of gaming machine are performed (see, for example, Patent Document 1).

  For this reason, control devices for such gaming machines have been diversified according to the types and types of gaming machines, and power supply devices that supply power to such control devices have control specifications ( It was necessary to design and manufacture a dedicated power supply unit that matches the output voltage and output power.

FIG. 9 shows a configuration of a conventional power supply apparatus 101 mounted on such a gaming machine. As shown in FIG. 9, in a conventional power supply device, a commercial AC power supply (AC100V) is rectified and smoothed by a rectifier circuit 51 and a smoothing circuit 52, and then switched at a frequency of several tens to several hundreds KHz, for example. Then, the voltage is converted again to an AC voltage, which is smoothed by the smoothing circuit 54 and output as a DC voltage. This output voltage value is divided by a voltage detection unit composed of two resistors R1 and R2, for example. The divided output voltage value is compared with a reference potential provided in the power supply control circuit 55, and the duty ratio of the switching circuit 53 (the ratio of the ON time during one cycle) is set so as to be equal to the reference potential. ) To control.
JP 2003-62159 A

  However, in such a configuration of the conventional power supply device, since the voltage detection unit is provided on the power supply device side, the output voltage output from the power supply device is fixed, and the control board side is, for example, DC15V, DC12V Alternatively, in the case where 5 V DC is required, the power supply device must change the voltage detection circuit or the reference potential correspondingly, or use a separate power supply device.

  For this reason, the types of newly developed game machines and control boards are also increasing, and the types of power supply devices mounted on them are increasing, leading to an increase in manufacturing costs, inventory management costs, etc., and hindering cost reduction. It was.

  Also, in the gaming machine, when the distance between the power supply device and the control board that receives the stabilized DC voltage supply from this power supply device is far away, the voltage drop in the power supply line between them corresponds to the fluctuation of the load current As a result, the input voltage value on the control board side may deviate from the input voltage range required by the integrated circuit mounted thereon.

  The present invention has been made in view of the problem of the conventional power supply device that supplies a DC voltage to the control board of such a gaming machine, and the control board itself that receives the supply of the stabilized DC voltage from the power supply device is provided. An object of the present invention is to realize commonization or generalization of power supply devices used in gaming machines by enabling selection of a voltage output from the power supply device.

  It is another object of the present invention to provide a power supply apparatus in which the value of the input voltage supplied to the control board side falls within a predetermined fluctuation range regardless of the load fluctuation on the control board side.

  Therefore, the invention described in claim 1 is a power supply device that supplies a stabilized DC voltage to a control board that controls the gaming machine, and divides the DC voltage supplied to the control board. A voltage detection circuit is mounted on the control board, a detection value divided by the voltage detection circuit is fed back and a DC voltage stabilized by comparing the detection value with a predetermined reference potential is supplied to the control board. The present invention provides a control device for a gaming machine characterized by being supplied to the game machine.

  According to the first aspect of the present invention, since the voltage detection circuit is mounted on the control board on the load side, the power supply device can be handled manually by changing the resistance value or the like constituting the voltage detection circuit. Since the output voltage value can be changed in the power supply device without adding the power supply, the power supply device used in the gaming machine can be made common or generalized. In addition, since the voltage on the control board side is detected, stable voltage supply is possible regardless of the load fluctuation on the control board side.

  According to a second aspect of the present invention, the power supply device includes a rectifier circuit that rectifies a predetermined AC power supply, a first smoothing circuit that smoothes the rectified power supply voltage, and the smoothed DC current. A switching circuit for switching the voltage, a power supply control circuit for controlling the duty ratio of the switching so that the detected value is equal to the predetermined reference potential, and a second smoothing circuit for smoothing the switched voltage It is characterized by being comprised from these.

  The invention described in claim 2 is a chopping type switching power supply device that efficiently generates a stabilized DC voltage from an AC power supply such as AC24V insulated from a commercial power supply. It is possible to provide a power supply device that can be achieved at a relatively low cost.

  According to a third aspect of the present invention, there is provided a rectifier circuit for rectifying a commercial AC power supply, a first smoothing circuit for smoothing the rectified power supply voltage, and the smoothed DC voltage for the high frequency transformer. A switching circuit connected to the next winding for switching, a power supply control circuit for controlling the duty ratio of the switching so that the detected value is equal to the predetermined reference potential, and a secondary winding of the high-frequency transformer. And a second smoothing circuit that smoothes the induced voltage.

  The invention described in claim 3 is a type of switching power supply device that insulates the output DC voltage from the commercial power supply. The commercial power supply side and the DC output circuit are insulated by the high-frequency transformer, and On the secondary side, a plurality of output voltages can be extracted by applying a plurality of windings.

  Further, in the invention described in claim 4, the control board for controlling the gaming machine is composed of a main control board and a sub control board, and the voltage detection circuit is provided on the main control board. It is a feature.

  According to the fourth aspect of the present invention, when the control board for controlling the gaming machine is composed of the main control board and the sub control board, the output voltage of the power supply device is detected by the voltage detection circuit provided on the main control board. It is possible to determine.

  According to a fifth aspect of the present invention, the control board for controlling the gaming machine includes a main control board and a sub control board, and the voltage detection circuit is provided on the sub control board. It is a feature.

  According to the fifth aspect of the present invention, when the control board for controlling the gaming machine is composed of the main control board and the sub control board, the output voltage of the power supply device is detected by the voltage detection circuit provided on the sub control board. It is possible to determine.

  Since the power supply device mounted on the gaming machine of the present invention can select the voltage output from the power supply device on the control board side that receives the supply of stabilized DC voltage from the power supply device, the power supply used in the gaming machine The device was made common or generalized. Further, it has been realized that the value of the input voltage supplied to the control board side falls within a certain fluctuation range regardless of the load fluctuation on the control board side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, an outline of operations of a slot machine and a pachinko machine in which the power supply device of the present invention is mounted will be described with reference to FIGS. Based on FIG. 3, the configuration and outline of the control device for controlling these gaming machines will be described. Based on FIGS. 3 to 8, an embodiment of a power supply device mounted on a gaming machine according to the present invention will be described.

  FIG. 1 is a diagram for explaining an outline of the operation of a slot machine as an example of a gaming machine. As shown, the slot machine 1 uses coins, medals, tokens, or the like as game media. On the front surface of the cabinet 2 constituting the slot machine 1, for example, a 15-inch liquid crystal display device 2a having a substantially vertical surface is formed. The liquid crystal display device 2a displays information related to the game, animation as an effect display, and the like. A plurality of winning lines are also displayed through the liquid crystal display device 2a.

  In this case, a specific operation of the BET switch (for example, a single pressing operation), which will be described later, or one coin is inserted from the medal insertion slot 22 enables one pay line, and the specific operation of the BET switch (For example, two pushing operations) or by inserting two coins, three pay lines are activated, and by operating the maximum BET switch 13 described later or by inserting three coins, five pay lines are obtained. Enabled.

  Inside the cabinet 2, a symbol row composed of a plurality of types of symbols is drawn on each outer peripheral surface, and three reels that start rotating by the operation of the lever 6 are rotatably provided in a horizontal row. . These reels are visible through the liquid crystal display device 2a. The rotation of each reel is controlled to be stopped automatically after a certain period of time or individually by a player's stop operation. When all the reels are stopped and the symbols displayed on the surface of the reel in the liquid crystal display device 2a are in a predetermined combination winning pattern, a predetermined number of game medals are received from the medal payout hopper as a reward for winning. Refunded. The medals are paid out from the medal payout port 15 at the lower front of the cabinet 2, and the paid-out medals are stored in the medal receiving unit 16.

  A region S on one side of the liquid crystal display device 2a is provided with a WIN lamp, a payout display unit, a plurality of lamps indicating a gaming state, a bonus game information display unit, and the like. The WIN lamp is lit when a bonus is won, but when the bonus is won by an internal lottery, the WIN lamp is lit with a predetermined probability. The payout display unit is composed of a 7-segment LED, and displays the payout number of coins at the time of winning. The bonus game information display section is composed of 7-segment LEDs, and displays the number of possible bonus games and the number of bonus game winnings.

  A horizontal base 10 is formed below the liquid crystal display device 2a. On the base 10, the above-described maximum BET switch 13, other BET switches (not shown), and a coin slot 22 are provided. Yes. For example, when the other BET switch is pressed once, one of the credited coins is bet on the game, and when the other BET switch is pressed twice, the credit is credited. Two of the existing coins are bet on the game, and the maximum number of coins that can be bet on the game is bet by pressing the maximum BET switch 13 once. By operating these BET switches, a predetermined pay line is activated as described above. On the left side of the maximum BET switch 13 in the figure, there are provided a selection button 11 for displaying various game information on the liquid crystal display device 2a during the non-game state and a determination button 12 for determining the selection. ing.

  On one side of the front portion of the pedestal portion 10, a start lever 6 for rotating the reel by a player's operation and starting display of the variation of the symbols in the liquid crystal display device 2a is rotatable within a predetermined angle range. Is attached. Three stop buttons 7L, 7C, and 7R for individually stopping the rotation of the three reels are provided at the center of the front surface of the pedestal 10.

  First and second speakers 21L and 21R as sound output devices are provided on the left and right above the cabinet 2, and third and fourth speakers as sound output devices are provided on the back of the slot machine 1. 22L and 22R (see FIG. 4) are provided. These speakers 21L, 21R, 22L, and 22R output sound effects that produce a gaming state. In addition, a payout table panel 23 is provided between the first and second speakers 21L and 21R to display a combination of symbols to be awarded and the number of coins to be paid out.

  FIG. 2 shows a pachinko machine 30 as another example of the gaming machine. As shown in the figure, the pachinko machine 30 includes a rectangular plate-like game board 32 incorporated in a window frame 31 of a rectangular frame-like main body frame, and an upper plate 33 and a lower plate 34 provided below the game board 32. And a firing handle 35 provided on the right side of the lower plate 34.

  In addition, a plurality of obstacle nails are usually driven into the front side of the game board 32. However, the game board 32 is formed of a resin material without using a structure for driving a nail, and a metal rod-like body is implanted in the resin material game board 32 so as to protrude in the front direction of the game board 32. Also good.

  Furthermore, the launch handle 35 is provided so as to be rotatable with respect to the main body frame, and the player operates the launch handle 35 to launch a game ball onto the game board 32 to perform a pachinko game. A game ball launch motor (not shown) is provided on the back side of the launch handle 35. When the launch handle 35 is rotated in the clockwise direction by the player, electric power is supplied to the launch motor. The game balls stored in the upper plate 33 are sequentially launched onto the game board 32. The launched game ball is guided to the guide rail 36 provided on the game board 32 and moves to the upper part of the game board 32, and then the direction of travel is changed by the collision with the plurality of obstacle nails described above. It falls down below the game board 32.

  The front surface of the game board 32 forms a 20-inch liquid crystal display device 32A, for example, and displays images or characters for providing game information to the player according to the game situation. When it is detected that the game ball has passed a predetermined position on the game board 32, the normal symbol variation display is started on the liquid crystal display device 32A, and after the predetermined time has elapsed, the normal symbol variation display is stopped.

  This normal symbol is information including numbers and symbols, for example, numbers such as “0” to “9” and symbols such as “$”. When this normal symbol is stopped and displayed as a predetermined symbol, for example, “7”, the rear surface of the game board 32 is used to drive the movable pieces 41a and 41b provided on the left and right sides of the start port 40. A current is supplied to the solenoid provided on the side. Then, the movable pieces 41a and 41b are driven so that the game ball can easily enter the start port 40, and the start port 40 is controlled to be in an open state. When a predetermined time elapses after the start port 40 is opened, the movable pieces 41a and 41b are driven to close the start port 40 so that it is difficult for a game ball to enter.

  In addition, on both sides of the upper part of the pachinko gaming machine 30, speakers 46L and 46R are provided as sound output devices for outputting sound effects that effectively produce the gaming state, a lamp display device 77 for effect display, and the like. It has been. Further, a jackpot winning device 42 is provided below the game board 32. A shutter 44 is disposed in the big winning opening 43 of the big hit winning device 42. The shutter 44 is driven by a solenoid provided on the back side of the game board 32 so as to be in an open state when a gaming state called “big hit”, which is one of the advantageous situations for the player, is entered. Then, when the game balls enter the big winning opening 42 for a predetermined time or a predetermined number of winning balls and a required number of winning balls are released, the shutter 44 is closed. However, when one of the balls enters the specific area when the shutter 44 is opened, the shutter 44 is promised to be opened again after a predetermined time has elapsed or after a predetermined number of balls have been entered, and this is repeated up to a predetermined number of times. As a result, the gaming state is advantageous to the player.

  In addition to this, on the game board 32, a general winning opening or special winning openings 45, 47 are provided. In this way, when a game ball enters the above-described big winning opening 43, start opening 40, general winning opening or special winning openings 45, 47, etc., the number of games set in advance according to the type of winning opening. The balls are paid out to the upper plate 33 as prize balls. Further, on the game board 32, a lamp for visually lighting information to the player according to the game state is provided.

  FIG. 3 shows an example of a control device (control board) for a gaming machine to which the power supply device 101 of the present invention supplies a stabilized DC voltage. As described above, in the pachislot machine 1 shown in FIG. 1, the liquid crystal display device 2a for enhancing the production effect is incorporated, and the image display in the image display unit 2a is controlled based on the image data. Accordingly, it is necessary to control sound source data for generating complex sound effects. Similarly, the pachinko machine 30 shown in FIG. 2 incorporates a liquid crystal display device 32A for enhancing the effect. Therefore, in these gaming machines, a control circuit for controlling the progress of the game is provided on the main control board 102 for controlling the game processing operation exclusively, and a control circuit for controlling other processes ( An effect control circuit that controls image display control, audio control, and the like is provided on a sub-control board 103 that is divided from the main control board 102 and that receives various commands (instructions) from the main control board 102 and executes them.

  The power supply apparatus 101 of the present invention supplies a predetermined stabilized DC voltage to the main control board 102 and the sub control board 103. Here, as a DC voltage supply mode, as shown in FIG. 3, the power supply device 101 is described in FIG. 7 and a mode in which the DC voltage is supplied in parallel to the main control board 102 and the sub control board 103. As described above, there is a mode in which a DC voltage is supplied from the power supply apparatus 101 to the main control board 102 and a DC voltage is supplied to the sub control board 103 via the main control board 102.

  Here, in the DC voltage supply form shown in FIG. 3, the output voltage voltage detection circuit may be provided on either the main control board 102 or the sub-control board 103. In the DC voltage supply form shown in FIG. 7, the output voltage voltage detection circuit is also received by the main control board 102.

  Thus, most of the control devices for gaming machines are composed of the main control board 102 and the sub control board 103, and the main control board 102 is connected to the sub control board 103 via the communication line 111. . Here, the main control board 102 performs the main control of the game in the pachinko machine 30, and the sub-control board 103 performs an effect display and sound output control processing in the pachinko machine 30 based on a signal from the main control board 102. Do. Here, the communication line 111 extending from the main control board 102 is connected to the communication connector 113 on the sub control board 103. The sub-control board 103 is provided with a power connector 115 for receiving power from the power board 101. The sub-control board 103 includes a plurality of modules constituting the pachinko machine 30, such as a liquid crystal display device 32A, a speaker 46L, The drive control of the 46R, the lamp or the LED 77 is performed based on the control command signal from the main control board 102.

  For this reason, the direct current voltage and the load current required by the control device for controlling the gaming machine differ from one gaming machine to another because the controlled object and the content of the effect vary greatly depending on the type and model number of the gaming machine.

  FIG. 4 shows the configuration of the power supply device of the present invention that supplies a stabilized DC voltage to a control board that controls the gaming machine. In FIG. 4, the rectifier circuit 51 rectifies the input AC power supply (for example, AC 100 V), and the AC power source rectified by the rectifier circuit 51 is smoothed by the smoothing circuit 52 on the primary side. The smoothed voltage is switched by the switching circuit 53 at a frequency of several tens to several hundreds KHz, for example. Then, the switched power is smoothed by the secondary-side smoothing circuit 54 to become a DC voltage. This output voltage value is output to the main control board 102 or the sub control board 103 constituting the control device of the gaming machine.

  The power supply apparatus is characterized in that the voltage detection unit 120 is provided on the main control board 102 or the sub control board 103 which is a load of the power supply apparatus. The voltage detection unit 120 includes, for example, two resistors R1 and R2. Then, the divided output detection value is fed back and compared with a reference potential provided in the power supply control circuit 55, so that the feedback output detection value becomes the same as the reference potential. The duty ratio (the ratio of the on time during one period) is controlled.

  As described above, in the power supply device 101, the ratio of R1 and R2 (R1 / R1 + R2) constituting the voltage detection unit 120 provided on the control board side 102 or 103 that receives the supply of the stabilized DC voltage from the power supply device 101. The voltage output from the power supply device can be arbitrarily selected simply by changing (). In addition, the value of the input voltage supplied to the control board 102 or 103 can be kept within a certain fluctuation range regardless of the load fluctuation of the control board 102 or 103.

  FIG. 5 shows an example of the first embodiment of the power supply device of the present invention. The power supply apparatus shown in FIG. 5 is a chopping switching power supply apparatus that efficiently generates a stabilized DC voltage from an AC 24V AC power supply insulated from a commercial power supply. To achieve.

  In FIG. 5, the rectifier circuit 51 performs full-wave rectification on the input AC 24 V, and the AC power source subjected to full-wave rectification by the rectifier circuit 51 is smoothed by the electrolytic capacitor C <b> 1 that constitutes the primary-side smoothing circuit 52. The smoothed voltage is chopped (switched) by the switching circuit 53 at a frequency of several tens to several hundreds KHz, for example. This switching may be self-excited or separately excited. Next, the switched electric power is smoothed by the diode D5, the inductor coil L1, and the capacitor C2 that constitute the secondary-side smoothing circuit 54, and becomes a DC voltage. The DC output voltage Vout is output to the main control board 102 or the sub control board 103 that constitutes the control device of the gaming machine.

  Here, a voltage detection unit is provided on the main control board 102 or the sub control board 103, and the voltage detection unit includes two resistors R1 and R2 that divide the DC output voltage Vout. Since R1 is connected to GND of zero potential, the divided voltage value (that is, output detection value) Vd is (Vout × R1) / (R1 + R2). The Vd is compared with a reference potential Vref provided in the power supply control circuit 55, so that the output detection value Vd is equal to the reference potential. The ratio) is controlled.

  For example, when the two resistors R1 and R2 are both 3.3 kΩ and Vref is set to 2.5V, the power supply apparatus 101 outputs DC5V as Vout. However, without changing the power supply device 101 at all, on the control board 102 or 103 side, for example, R1 is kept at 3.3 kΩ and R2 is set at 12.54 kΩ, and the direct current output from the power supply device 101 is changed. The output voltage Vout can be set to DC12V.

  In FIG. 5, the power supply control circuit 55 includes a comparator (comparator) CMP1 that compares the divided voltage value (output detection value) Vd of the voltage detection unit with the reference potential Vref, an output value of the sawtooth wave oscillation circuit, and CMP1. And a comparator (comparator) CMP that outputs the voltage difference. Here, R3 and R4 are constants that determine the amplification degree of the comparator (comparator) CMP1.

  FIG. 6 shows an example of the second embodiment of the power supply device of the present invention. The power supply apparatus shown in FIG. 5 is a switching power supply apparatus that insulates the output DC voltage from the commercial power supply (AC 100 V, 50/60 Hz), and the commercial power supply side and the DC output circuit are insulated by the high-frequency transformer T1. . For this reason, the feedback circuit is also insulated by the transformer T2. In the present embodiment, although not shown, a plurality of output voltages can be taken out by applying a plurality of windings to the secondary side of the high-frequency transformer T1.

  The rest of the configuration of the power supply apparatus according to the second embodiment is the same as that of the first embodiment shown in FIG. 5 and will not be described in detail. However, the DC output voltage Vout Is output to the main control board 102 or the sub control board 103 constituting the control device of the machine, and a voltage detection unit is provided on the main control board 102 or the sub control board 103. The voltage detection unit is connected to the DC output voltage Vout. Is composed of two resistors R1 and R2. Since R1 is connected to GND of zero potential, the divided voltage value (that is, output detection value) Vd is (Vout × R1) / (R1 + R2). The Vd is compared with a reference potential Vref provided in the power supply control circuit 55, so that the output detection value Vd is equal to the reference potential. The ratio) is controlled.

  FIG. 7 shows an example of a supply form of the DC output voltage Vout by the power supply apparatus 101. In the example of the supply form, the DC output voltage Vout is supplied from the power supply device 101 to the main control board 102 and the DC output voltage Vout is supplied to the sub control board 103 via the main control board 102. is there. Therefore, the voltage detection circuit shown in FIG. 4 is provided on the main control board 102 side.

  As shown in FIG. 7, the control device of the gaming machine includes a main control board 102 and a sub control board 103, and the main control board 102 is connected to the sub control board 103 via the communication line 111. Yes. Here, the main control board 102 performs the main control of the gaming machine, and the sub control board 103 performs the lamp device 77, the liquid crystal effect display device 32A, and the speaker device 46L in the pachinko machine 30 based on a command from the main control board 102. , 46R control processing and the like are performed.

  FIG. 8 shows another example of the supply form of the DC output voltage Vout by the power supply apparatus 101. In the example of the supply form, the power supply device 101 supplies a DC voltage to the main control board 102 and the sub control board 103 in parallel. Therefore, the voltage detection circuit shown in FIG. 4 may be provided on either the main control board 102 or the sub control board 103.

  As described above in detail, in the present power supply device that supplies a stabilized DC voltage to a control board that controls the gaming machine, the voltage detection circuit that divides the DC voltage supplied to the control board is controlled. It is mounted on the substrate, and the detected value divided in this voltage detection circuit is fed back and the stabilized value is supplied to the control substrate by comparing the detected value with a predetermined reference potential. .

  As a result, in this power supply device, since the voltage detection circuit is mounted on the control board on the load side, the output voltage value can be freely set to the power supply device simply by changing the resistance value etc. constituting this voltage detection circuit. Since the setting can be changed, the versatility of the power supply device used in the gaming machine is improved. Since the voltage on the control board side is detected, it is possible to supply a stable voltage regardless of the load fluctuation on the control board side.

  The present invention relates to a power supply device that supplies a stabilized DC voltage to various game machine control devices including a slot machine and a pachinko machine, and has industrial applicability.

It is a front view of the slot machine which can mount the power supply device of this invention. It is a perspective view of the pachinko machine which can mount this power supply device. The structural example of the control apparatus (control board | substrate) used as the object for which this power supply device supplies the stabilized DC voltage is shown. The structure of this power supply device is shown. The example of 1st Embodiment of this power supply device is shown. The example of 2nd Embodiment of this power supply device is shown. An example of the supply form of the DC output voltage by this power supply device is shown. The other example of the supply form of the DC output voltage by this power supply device is shown. The structural example of the power supply device which concerns on a prior art is shown.

Explanation of symbols

1 slot machine (game machine)
30 Pachinko machines (game machines)
DESCRIPTION OF SYMBOLS 101 Power supply device 102 Main control board 103 Sub control board 51 Rectifier circuit 52 Smoothing circuit (primary side)
53 Switching circuit 54 Smoothing circuit (secondary side)
55 Power control circuit 120 Voltage detector

Claims (6)

A power supply device that supplies a stabilized DC voltage to a control board that controls a gaming machine,
A voltage detection circuit that divides the DC voltage supplied to the control board is mounted on the control board, and the detection value divided by the voltage detection circuit is fed back and the detection value is compared with a predetermined reference potential. A power supply apparatus for supplying a DC voltage stabilized by the above-mentioned to the control board. A rectifier circuit for rectifying a predetermined AC power supply;
A first smoothing circuit for smoothing the rectified power supply voltage;
A switching circuit for switching the smoothed DC voltage;
A power supply control circuit for controlling a duty ratio of the switching so that the detected value is equal to the predetermined reference potential;
A second smoothing circuit for smoothing the switched voltage;
The power supply device according to claim 1, comprising: A rectifier circuit for rectifying commercial AC power;
A first smoothing circuit for smoothing the rectified power supply voltage;
A switching circuit for switching the smoothed DC voltage by connecting to a primary winding of a high-frequency transformer;
A power supply control circuit for controlling the duty ratio of the switching so that the detected value is equal to the predetermined reference potential;
A second smoothing circuit for smoothing a voltage induced in the secondary winding of the high-frequency transformer;
The power supply device according to claim 1, comprising:   The control board for controlling the gaming machine includes a main control board and a sub control board, and the voltage detection circuit is provided on the main control board. Power supply.   The control board for controlling the gaming machine is composed of a main control board and a sub control board, and the voltage detection circuit is provided on the sub control board. Power supply.   A gaming machine comprising the power supply device according to claim 1.

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