JP2008048935A - Model railroad vehicle and its controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller capable of easily performing adjustment so as to light a headlight while stopping a motor and stop a vehicle while lighting a lamp even in replacing the vehicle. <P>SOLUTION: The controller for a model railroad is equipped with: a DC power source part 33 for outputting a DC voltage; an integrated circuit 43 as an oscillation circuit for outputting control pulses which are the pulse signals of a prescribed frequency and have adjustable duty ratio; an output adjustment circuit part 51 for superimposing the voltage-adjustable DC voltage on the control pulses; an output adjuster 61 for converting a fixed DC voltage output by the DC power source part 33 to pulse signals synchronized with the control pulses by the control pulses on which the DC voltage is superimposed and outputting driving signals to which DC components corresponding to the DC voltage superimposed on the control pulses are added; and an output changeover switch 67 for switching the polarity of the driving signals. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a model railway vehicle that travels on a rail, and a control device that controls the traveling of the vehicle.

Today, a model vehicle such as a miniature town or a mountain is provided with a track and a station in the nature of the model.
In such a model railway, HO gauge, N gauge, Z gauge, etc. are standardized, and it is desired that the model vehicle reproduces the actual railway vehicle as accurately as possible. For example, a combination of a control device and a vehicle for turning on the headlights and taillights even when the power supply to the motor is stopped and the vehicle is stopped by stopping the power supply to the motor has been proposed (for example, patents). Reference 1).
Japanese Patent No. 2839414

  As described above, to turn on the headlamp while the motor is stopped, the lamp is turned on using high-frequency alternating current so that the vehicle does not move due to insufficient motor torque. There are subtle variations in the minimum required power for running the vehicle due to the characteristics of the motor to be incorporated, the weight of the vehicle itself, the rotational resistance of the wheels, etc., and it is difficult to light the lamp while stopping the vehicle reliably. In addition, when the vehicle is replaced, the control device that can be adjusted so that the vehicle is stopped while the lamp is turned on has a drawback that the structure and the like are complicated and the manufacturing cost is increased.

  The present invention eliminates such drawbacks and provides a control device and a model vehicle that can turn on the lamp while reliably stopping the vehicle with a relatively simple control circuit.

  The present invention relates to an integrated circuit (43) as an oscillation circuit that outputs a control pulse that is a pulse signal having a predetermined frequency and whose duty ratio can be adjusted, and a DC voltage that can be adjusted to the control pulse. The output adjustment circuit unit (51) that superimposes the current and the control pulse on which the DC voltage is superimposed, a constant DC voltage is converted into a pulse signal synchronized with the control pulse, and the voltage corresponding to the DC voltage superimposed on the control pulse is The railroad model control device (10) includes an output regulator (61) that outputs a drive signal to which an AC component has been added, and an output changeover switch (67) that switches the polarity of the drive signal.

  The peak value of the drive signal output by the output regulator (61) as a pulse signal is always a constant voltage, and the average value of the drive signal changes according to the change in the duty ratio of the control pulse, and is superimposed on the control pulse. The average value of the drive signal changes according to the change in the voltage value of the DC voltage to be generated, and the frequency of the control pulse output from the oscillation circuit is set to 20 kHz to 40 kHz.

  Moreover, as this control apparatus (10), it has a direct-current power supply part (33), and uses the output voltage of the direct-current power supply part (33) as a drive signal of a pulse signal that matches the control pulse by the output regulator (61). The peak value of the output voltage and drive signal of the DC power supply (33) may be about 15 volts.

The model vehicle has a built-in light-emitting diode in parallel with the DC motor (73), and the light-emitting diode is connected to the current collectors (71, 71) in series with a limit circuit (75) in which a resistor and a capacitor are connected in parallel. 72).
The light emitting diode may be connected to the left and right rails through a diode bridge together with the current collectors (71, 72).

  A control device according to the present invention includes an oscillation circuit that outputs a control pulse whose duty ratio can be adjusted, an output adjustment circuit unit that superimposes a DC voltage whose voltage can be adjusted on the control pulse, and a direct current Since it has an output adjuster that outputs a pulse signal obtained by adding an AC component of a voltage corresponding to the superimposed DC voltage by a control pulse on which the voltage is superimposed, the duty ratio of the control pulse is adjusted by the lamp lighting adjustment knob. If the DC voltage is lowered by adjusting, it is easy to adjust the pulse signal with a low average value for turning on the light emitting diode as the lamp of the vehicle without running the model railway vehicle.

  The DC speed is controlled by adjusting the travel adjustment knob to control the DC voltage and adjusting the average voltage of the drive signal by increasing the AC component of the voltage corresponding to this DC voltage. Can be controlled.

  For this reason, it is a control device that can be easily manufactured by an oscillation circuit, an output adjustment circuit that applies a DC voltage to a control signal, and an output regulator that pulses a DC voltage using a control signal including a DC component, and This is a control device that can stop the vehicle while turning on the lamp of the vehicle with the lamp lighting adjustment knob, and can easily control the traveling of the vehicle with the traveling adjustment knob.

  The best mode for carrying out the present invention outputs a DC power supply unit 33 that outputs a DC voltage of 15 volts and a control pulse that is a pulse signal having a constant frequency within a range of 20 kHz to 40 kHz. The integrated circuit 43 as an oscillation circuit in which the duty ratio of the pulse signal output as the control pulse can be adjusted by the adjusting operation of the first variable resistor 46, and the control without changing the peak value of the control pulse. A constant DC voltage is synchronized with the control pulse by the output adjustment circuit unit 51 that superimposes the DC voltage that can be adjusted by adjusting the variable resistor 53 and the control pulse in which the DC voltage is superimposed. A pulse signal and an AC component of the voltage corresponding to the DC voltage superimposed on the control pulse are added, and the peak value is always constant while the control pulse An output regulator 61 that outputs a drive signal whose average value changes according to the change of the duty ratio, and whose average value also changes according to the change of the voltage value of the DC voltage superimposed on the control pulse, and output switching that switches the polarity of the drive signal A control apparatus 10 for a railway model having a switch 67 is provided.

  The railway model vehicle incorporates a plurality of light emitting diodes in parallel with the DC motor 73, and each light emitting diode is connected to the current collectors 71, 72 on the left and right rails in series with a limiting circuit 75 in which a resistor and a capacitor are connected in parallel. Some light emitting diodes may be connected to the left and right rails by current collectors 71 and 72 via a diode bridge.

  As shown in FIG. 1, a control apparatus 10 for a model railway vehicle according to the present invention has a lamp lighting adjustment knob 13, a travel adjustment knob 15, a direction changeover switch 17 and a vent hole 27 for exhaust heat. In addition, on the back surface (not shown), an output pin jack 19 for inserting a cord of a connect pin 25 connected to a rail of a model train and a plug jack 31 which is an AC 15 volt input terminal are provided. Includes a spare terminal 23 for outputting DC 12 volts and a ground terminal 36 for forming a common ground line for other devices.

  Then, as shown in FIG. 2, the AC power supplied from the plug jack 31 is converted into a direct current by a power supply unit 33 formed by a full-wave rectifier circuit in which fuses are incorporated in four diodes and a capacitor, and this direct current of 15 volts is output. The positive electrode output terminal of the power supply unit 33 to be connected is connected to the spare terminal 21 for 15 volts and the control circuit unit 41, and is converted to 12 volts via the constant voltage circuit 37, so that the spare terminal 23 for 12 volts and the control circuit unit are converted. It supplies to 41.

  Also, the other output terminal of the power supply unit 33 is a negative electrode terminal which is connected to the spare terminals 21 and 23, the constant voltage circuit 37, the control circuit unit 41 and the like by the ground line 35. Is connected to the ground terminal 36 provided on the right side of the control device, and the output terminal of the constant voltage circuit 37 is also connected to a high-resistance resistor and an electrolytic capacitor in parallel. It is connected to the ground line 35 through the inverting circuit 39.

  The control circuit unit 41 includes an integrated circuit 43 as an oscillation circuit capable of adjusting the duty ratio, a variable three-terminal regulator as an output regulator 61, a variable resistor 53 and a transistor 55 as an output regulator circuit unit 51, It consists of.

  The integrated circuit 43 as an oscillation circuit has an initial reset terminal connected to the ground line 35 via an initial reset capacitor 49, and oscillates with a fixed resistor 45, a first variable resistor 46, a bias resistor 47 in series. The capacitor 48 is inserted between the output terminal of the constant voltage circuit 37 and the ground line 35 and connected to the oscillation control input terminal of the integrated circuit 43.

  A pulse signal of about 30 kilohertz is output as a control pulse from the output terminal with the capacity of the oscillation capacitor 48 as a predetermined capacity. The fixed resistor 45, the first variable resistor 46, the bias resistor in series By changing the resistance value of the first variable resistor 46 in the unit 47, the duty ratio of the pulse voltage used as the control pulse can be adjusted in the range of 0% to 30%.

  The knob attached to the end of the adjustment shaft of the first variable resistor 46 is used as a lamp lighting adjustment knob 13, and the lamp lighting adjustment knob 13 is rotated to change the resistance of the first variable resistor 46. When the value is changed, the control pulse output from the output terminal of the integrated circuit 43 has a duty ratio as the resistance value sequentially changes as shown in the range of A in the control pulse as shown in FIG. Although sequentially changing, although not shown in FIG. 3, it is possible to output a DC H level signal with a duty ratio of 0 percent.

The output terminal of the integrated circuit 43 is connected to the control terminal of the variable three-terminal regulator that is the output regulator 61 via the output regulator circuit unit 51.
This variable three-terminal regulator outputs a voltage equal to or lower than the voltage input from the input terminal from the output terminal, and the output voltage from this output terminal is a fixed voltage that is approximately 1.5 volts higher than the voltage of the control terminal. It adjusts the voltage and outputs a constant voltage that matches the control terminal voltage of the variable three-terminal regulator.

  In the control circuit unit 41, the input terminal of the variable three-terminal regulator serving as the output regulator 61 is connected to the positive electrode output terminal of the power supply unit 33, and the output terminal of the variable three-terminal regulator is connected via the voltage drop diode 65. Connected to the output changeover switch 67, the control terminal of the variable three-terminal regulator is connected to the output adjustment circuit unit 51, and the adjustment resistor 63 is connected between the control terminal and the output terminal.

  The output adjustment circuit unit 51 includes an adjustment variable resistor 53 that connects the control terminal of the output regulator 61 and the ground line 35, and a switching transistor 55 between the adjustment terminal of the adjustment variable resistor 53 and the ground line 35. By connecting the control terminal of the switching transistor 55 to the output terminal of the control pulse of the integrated circuit 43 and adjusting the position of the adjustment terminal of the adjustment variable resistor 53 to make the switching transistor 55 conductive, an output is obtained. The resistance value of the adjusting variable resistor 53, which is the second variable resistor inserted between the control terminal of the adjusting device 61 and the ground line 35, can be reduced to 0 ohm.

  Therefore, the control terminal voltage of the output regulator 61 is set to 0 volts and 15 volts by turning the switching transistor 55 on and off by positioning the adjustment terminal of the adjustment variable resistor 53 closest to the control terminal side of the output regulator 61. By moving the adjustment terminal of the adjustment variable resistor 53 to the ground line 35 side and turning on and off the switching transistor 55, the control terminal voltage of the output regulator 61 is set to a predetermined value of 15 volts or less. It can be switched between voltage and 15 volts.

  Since the output adjustment circuit unit 51 is connected to the output terminal of the control pulse in the integrated circuit 43, the control terminal voltage when the adjustment terminal of the adjustment variable resistor 53 is positioned closest to the control terminal is shown in FIG. 3, when the control pulse is on, the control terminal voltage is changed to 0 volts, and when the control pulse is off, the control terminal voltage is changed to about 15 volts. The pulse width (duty ratio) of the control terminal voltage can be changed in accordance with the duty ratio of the voltage pulse signal.

  Further, when the adjustment terminal of the adjustment variable resistor 53 is gradually moved to the ground line 35 side with the duty ratio of the control pulse being constant as shown in the section B in FIG. 3, the control terminal voltage becomes D shown in FIG. As in the section, the minimum voltage is gradually increased.

  That is, a DC voltage signal with a control pulse duty ratio of 0 is input to the output adjustment circuit unit 51, and the adjustment terminal of the adjustment variable resistor 53 is moved and adjusted to adjust the voltage of the DC voltage superimposed on the control terminal voltage. By doing this, the voltage corresponding to the adjusted DC voltage is used as the control terminal voltage, and by setting the duty ratio of the control pulse to a constant value other than 0%, it corresponds to the voltage of the superimposed DC voltage. A control terminal voltage that forms a minimum voltage is superimposed so that an alternating voltage of the selected voltage is applied during a pulse of 15 volts.

  Note that the pulse duty ratio of the control pulse and the control terminal voltage shown in FIG. 3 is schematically shown by enlarging the amount of change in the duty ratio, and is provided at the end of the adjustment terminal shaft of the adjustment variable resistor 53. Is attached with a travel adjustment knob 15.

  As described above, since the integrated circuit 43 and the output adjustment circuit unit 51 adjust and change the control terminal voltage of the output regulator 61, the voltage signal as the drive signal output from the output terminal of the output regulator 61 is the control terminal voltage. It is output as a voltage pulse that is slightly higher than the voltage and changes substantially the same as the change in the control terminal voltage.

  The output terminal of the output regulator 61 is connected to the output changeover switch 67 via a plurality of diodes connected in series in the forward direction as a voltage drop diode 65.

  The voltage drop diode 65 is a variable three-terminal regulator, which is an output regulator 61, that adjusts the output voltage from the output terminal to a constant voltage about 1.5 volts higher than the voltage at the control terminal, and outputs it. Because the control terminal of the output regulator 61 is adjusted between the input voltage of the variable three-terminal regulator, which is the output regulator 61, and 0 volts, the minimum output voltage of the output regulator 61 is about 1.5 volts. Is lowered to near 0 volts.

  The output changeover switch 67 uses a dual 3-terminal switch. One contact of the output pin jack 19 is used as the first changeover terminal and the sixth changeover terminal, and the other contact of the output pinjack 19 is used as the third contact. The switching terminal is connected to the fourth switching terminal, and the second switching terminal and the fifth switching terminal of the double three-terminal switch are opened.

  The output pin jack 19 is connected to the cord of the connect pin 25, and the drive signal output from the control device 10 via the output pin jack 19 and the connect pin 25 is supplied to the rail of the model railway. Is supplied as

  Therefore, from the state in which the first contact of the dual three-terminal switch is connected to the first switching terminal and the second contact is connected to the fourth switching terminal, the first contact is changed to the third switching terminal and the second contact is changed to the sixth switching terminal. By being in the connected state, it functions as a forward / reverse switching switch that reverses the output polarity to the two connect pins 25, and connects the first contact to the second switching terminal and the second contact to the fifth switching terminal. As a result, the output of the drive signal to the connect pin 25 can be stopped, and the end of the switching shaft operated in conjunction with the first contact and the second contact in this changeover switch is shown in FIG. A direction changeover switch 17 is attached.

  In this embodiment, one contact of the output changeover switch 67 is connected to the output terminal of the output regulator 61, and the other contact is connected to the ground line 35, and the reverse bias direction is set between the two contacts. A diode 69 is inserted.

  The vehicle as a driving vehicle placed on the rail of the model railway to which the connect pin 25 is connected has current collectors 71 and 72 that are slidably contacted with the left and right wheel shafts, and is connected to the current collectors 71 and 72. The light-emitting diodes 81 and 82 are a direct current motor 73 and a headlamp.

  As shown in FIG. 4, both poles of the DC motor 73 are connected to current collectors 71 and 72, respectively, and light emitting diodes 81 and 82 in series with a limiting circuit 75 in which a capacitor and a resistor are in series are connected to the left and right sides. Provided between the current collectors 71 and 72, the light-emitting diode 81 as a headlamp provided in front of the vehicle and the light-emitting diode 82 as a headlamp provided in the rear of the vehicle are reversed in polarity. It is.

  Accordingly, when a pulsating flow such as an alternating current or pulse signal including a predetermined direct current component is applied between the rails by the control device 10 described above, one of the light emitting diodes 81 is turned on and the direct current motor 73 is rotated in one direction. When the polarity of the direct current or pulsating current applied between the rails is reversed, the direct current motor 73 is reversed and the light emitting diode 81 that has been lit is extinguished and the other light emitting diode 82 having the opposite polarity is lit. is there.

  For this reason, if the polarity of the DC motor 73 and the polarity of the light emitting diodes 81 and 82 are adjusted, the light emitting diode as a headlamp directed to the traveling direction of the vehicle can always be turned on.

  The drive signal applied between the left and right rails is a pulsating voltage that is a pulse signal of about 30 kHz according to the control terminal voltage of the output regulator 61 shown in FIG. By decreasing the average value, the rotation of the DC motor 73 can be maintained in a stopped state while one of the light emitting diodes 81 and 82 in series with the limiting circuit 75 is turned on.

  Then, when the travel adjustment knob 15 is positioned at the minimum end position, the adjustment terminal of the adjustment variable resistor 53 is positioned on the control terminal side, and the lamp lighting adjustment knob 13 is gradually rotated from the minimum position toward the maximum position, FIG. As shown in section A in FIG. 3, the control pulse duty ratio is gradually changed to lower the average value voltage of the control pulse, and thus the average value of the drive signal can be gradually increased.

  Then, one of the light-emitting diodes 81 and 82 used as a headlamp is lit to gradually brighten the headlamp. When the vehicle starts to move, the lamp lighting adjustment knob 13 is slightly returned to the headlamp in a state where the vehicle is stopped. By adjusting the lamp lighting adjustment knob 13 so that the headlight becomes the brightest, it is possible to easily adjust the headlight to light up while stopping the vehicle.

  In this way, adjustment is performed as shown as section A in FIG. 3, the lamp lighting adjustment knob 13 is fixed, and the duty ratio of the control pulse is made constant as shown in section B of FIG. When 15 is sequentially rotated from the minimum end position to the maximum position and the adjustment terminal of the adjustment variable resistor 53 is moved to the ground line 35 side, the duty ratio of the pulse signal is constant as shown as section D in FIG. However, the average value of the drive signal can be increased by superimposing a DC voltage on the pulse signal.

  Then, the rotation of the DC motor 73 can be started, and when the DC voltage component is increased, the DC motor 73 can be rotated at a low speed, and when the DC voltage component is decreased, the DC motor 73 can be rotated to drive the vehicle. When the component is 0, the headlamp can be kept on while the vehicle is stopped.

  Further, a light emitting diode 83 as an indoor light is provided in a vehicle provided with the direct current motor 73 and the light emitting diodes 81 and 82 as a headlight, or a vehicle provided with the direct current motor 73 and the light emitting diodes 81 and 82 as a headlight. May be attached.

  As shown in FIG. 5, the light-emitting diode 83 as an indoor lamp is connected to a plurality of light-emitting diodes 83 arranged in parallel from one current collector 71 via a first diode 91, and the cathodes of the plurality of light-emitting diodes 83 are connected to each other. Collectively, a resistor and a capacitor are connected in parallel to a limiting circuit 75. This limiting circuit 75 is connected to the other current collector 72 via a second diode 92, and the cathode of the second diode 92 and the first diode. A third diode 93 is inserted between the cathode of 91 and a fourth diode 94 is inserted between the anode of the second diode 92 and the anode of the first diode 91, and a rectifier circuit is formed by four diode bridges. Thus, a voltage is supplied to the light emitting diode 83 and the limiting circuit 75.

  When a voltage is supplied to the light emitting diode 83 and the limiting circuit 75 by the four diode bridges, an auxiliary capacitor is inserted in parallel to the light emitting diode 83 and the limiting circuit 75 connected in series to connect the light emitting diode 83 to the light emitting diode 83. The supply voltage is smoothed.

  Therefore, in this room light circuit, a forward bias voltage can be applied to each light emitting diode 83 by the current flowing from the first current collector 71 through the first diode 91 and the second diode 92, and the polarity between the rails is reversed. Then, a forward bias voltage can be applied to each light emitting diode 83 by the current flowing through the third diode 93 and the fourth diode 94, and when a voltage higher than a predetermined voltage is applied between the rails regardless of the polarity between the rails. The light emitting diode 83 can always be turned on.

  In addition, a headlight, an indicator light, and a taillight may be provided in front of the vehicle as the leading vehicle. In this case, as shown in FIG. 6, the polarity is opposite to that of the light emitting diode 81 in series as the headlight. A single light-emitting diode 85 is inserted between the left and right current collectors 71 and 72 as a tail lamp, and a light-emitting diode 87 is provided as a display lamp through a rectifier circuit using a diode bridge using four diodes 91 to 94 It is.

  Therefore, in this vehicle, the light emitting diode 81 as the headlight and the light emitting diode 87 as the indicator light are turned on when traveling forward with the headlamp attached, and the headlight is turned off when traveling backward. The light-emitting diode 85 serving as the taillight and the light-emitting diode 87 serving as the indicator light can be lit to drive the vehicle, and the vehicle can be the leading vehicle or the last tailing vehicle of a train in which a plurality of vehicles are connected.

  In this way, the light emitting diodes 81 to 87, which are lamps such as headlamps and interior lights of model vehicles, are connected with the limiting circuit 75 in which a capacitor and a resistor are connected in parallel, so that the peak voltage is high. Even if a drive signal having a pulse voltage as large as 15 volts and having a small average value is used, it can be lit brightly without damaging the light emitting diode, and since this drive signal is a high-frequency pulse of about 30 kHz, the direct current motor 73 The rotation can be stopped without generating a torque larger than the load.

  The frequency of this drive signal is not limited to 30 kilohertz, but if it is 20 kilohertz or more, even if voltage resonance occurs in the vehicle or rail, it may not generate noise as a frequency that cannot be heard by human ears. Preferably, it is preferable to set the luminous efficiency of light emitting diodes used as vehicle lamps to about 40 kilohertz or less.

  And since this control device 10 adjusts the duty ratio of the pulse signal by the lamp lighting adjustment knob 13, even if the state varies from vehicle to vehicle, such as variations in torque of the DC motor 73 and load variations due to vehicle connection, It can be easily adjusted to light up the light emitting diodes without driving the vehicle, and has spare terminals 21 and 23, so that 15V or 12V DC is attached to accessories other than the vehicle. A voltage can be supplied.

  The control device 10 shown in FIG. 2 has a power supply unit 33 that converts AC 15 volt power into direct current, and a voltage drop transformer is incorporated in the power supply unit 33 to generate AC 100 volt power. The control device 10 may be input, or may be connected to a power source that outputs DC 15 volts or the like without having the power source unit 33, and the control circuit unit 41 may input a constant voltage DC such as 15 volts. In some cases, the control device 10 outputs a drive signal that is a pulse signal including a DC component.

The figure which shows the external appearance of the control apparatus which concerns on this invention. The figure which shows the circuit structure of the control apparatus which concerns on this invention. The figure which shows the state of the control pulse and control terminal voltage in the control apparatus which concerns on this invention. The figure which shows the circuit structure in the model vehicle which concerns on this invention. The figure which shows an example of the lamp circuit in the model vehicle which concerns on this invention. The figure which shows the other example of the lamp circuit in the model vehicle which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Control apparatus 13 Lamp lighting adjustment knob 15 Travel adjustment knob 17 Direction change switch 19 Output pin jack 21, 23 Spare terminal 25 Connect pin 27 Ventilation hole 31 Plug jack 33 Power supply part 35 Ground line 36 Ground terminal 37 Constant voltage circuit 39 Voltage stability Control circuit unit 43 Control circuit unit 43 Integrated circuit 45 Fixed resistor 46 First variable resistor 47 Bias resistor 48 Oscillation capacitor 49 Initial reset capacitor 51 Output adjustment circuit unit 53 Adjustment variable resistor 55 Switching transistor 61 Output regulator 63 Adjustment resistor 65 Voltage drop diode 67 Output changeover switch 69 Diode 71, 72 Current collector 73 DC motor 75 Limit circuit 81, 82, 83, 85, 87 Light emitting diode 91, 92, 93, 94 Diode 97 Auxiliary capacitor

Claims (6)

  An oscillation circuit that outputs a control pulse that is a pulse signal having a predetermined frequency and whose duty ratio can be adjusted, an output adjustment circuit unit that superimposes a DC voltage on which voltage adjustment is possible, and a DC voltage. An output regulator that outputs a drive signal in which a constant DC voltage is converted into a pulse signal synchronized with the control pulse and an AC component of a voltage corresponding to the DC voltage superimposed on the control pulse is added by a control pulse superimposed with And an output changeover switch for switching the polarity of the drive signal.   The peak value of the drive signal output by the output regulator as a pulse signal is always a constant voltage, the average value of the drive signal changes according to the change in the duty ratio of the control pulse, and the voltage of the DC voltage superimposed on the control pulse The railway model control device according to claim 1, wherein the average value of the drive signal changes according to a change in the value.   The railway model control device according to claim 1 or 2, wherein the frequency of the control pulse output from the oscillation circuit is fixed in a range of 20 kilohertz to 40 kilohertz.   It further has a DC power supply unit, and the output voltage of the DC power supply unit is used as a drive signal of a pulse signal that is adjusted to the control pulse by the output regulator, and the peak value of the output voltage and drive signal of the DC power supply unit is about 15 volts The railroad model control device according to any one of claims 1 to 4, characterized in that:   A light-emitting diode is built in parallel with the DC motor, and the light-emitting diode is connected to the left and right rails via a current collector in series with a limiting circuit in which a resistor and a capacitor are connected in parallel. .   6. The railway according to claim 5, comprising a plurality of light emitting diodes in series with the limiting circuit, wherein the light emitting diodes include light emitting diodes connected to the left and right rails by a current collector through a diode bridge. Model vehicle.

Images