JPH0635671Y2 - DC high voltage power supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a DC high voltage power supply device capable of easily inverting the output polarity.

[Technical background of the device and its problems] Generally, for a DC high-voltage power supply with an output voltage of several KV to several tens of KV, one of the positive and negative output terminals is connected to a housing for safety. So that it is grounded. Further, since the output terminal not connected to the case has a high potential with respect to the case, a special insulation treatment is required to prevent discharge or the like.

By the way, in such a power supply device, it is advantageous in terms of insulation processing to connect the common potential of the control system such as the output voltage to the output terminal on the ground side. Therefore, in this type of DC high-voltage power supply device, it is not easy to invert the polarity of the output voltage and the polarity with respect to the ground, unlike a low-voltage DC power supply.

[Object of the Invention] The present invention has been made in view of the above circumstances, and an object thereof is to provide a DC high-voltage power supply device capable of easily inverting the output polarity with a simple structure without impairing safety. is there.

[Outline of the Invention] That is, the present invention is characterized in that a movable block having a built-in rectifying diode is provided so as to be freely contactable and separable with respect to a fixed block and to be reversibly connected.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described in detail with reference to the circuit diagrams shown in FIGS. In the following explanation, four diodes are connected in series,
A quadruple voltage rectifier circuit will be described as an example.

In the figure, reference numeral 1 is a movable block, which accommodates four rectifying diodes 2a to 2d connected in series inside, and both ends and each series connection point are connected to movable contacts 3a to 3e.

The movable contacts 3a to 3e are arranged in series at equal intervals.

A fixed block 4 is provided with a recess X as a receiving space for the movable block 1, and fixed contacts 5a to 5e are provided in the recess X in correspondence with the movable contacts 3a to 3e. A high-voltage transformer 7 for boosting the power supply 6 and capacitors 8a to 8d for a rectifying circuit that double-rectifies the output voltage of the high-voltage transformer 7 are provided. The fixed contact 5e is connected to the output terminal 9a, and one end of the high voltage transformer 7 is connected to the output terminal 9b.

Since the movable contacts 3a to 3e of the movable block 1 are linearly arranged at equal intervals, the movable contacts 3a to 3e can be extracted from the state shown in FIG. 2 and inverted to be connected as shown in FIG. I am trying.

With such a configuration, the commercial power source 6 is connected to the high voltage transformer 7
Step up the voltage by applying this secondary side high voltage output to a voltage doubler rectifier circuit consisting of diodes 3a to 3d and capacitors 8a to 8d,
Double pressure rectification can be performed.

The polarity of the rectified output can be inverted depending on the connecting direction of the movable block 1 to the fixed block 4.

That is, in the state shown in FIG. 2, a positive output is obtained at the output terminal 9a and a negative output is obtained at the output terminal 9b. In the connection state shown in FIG. 3, the output terminal 9a has a negative output and the output terminal 9b has a positive output.

Therefore, while one of the high-voltage outputs is always connected to the housing or the like, an arbitrary output of the positive electrode and the negative electrode can be obtained according to the connection direction of the movable block 1, and the safety is high, and a switch is used for switching. The configuration is simple and the cost is low as compared with.

Since the movable block only needs to house the rectifying diode, it is small in size, can be easily insulated, and requires no special insulating material, so that the cost can be reduced.

The present invention is not limited to the above embodiment,
For example, the contacts are not limited to the linear arrangement, but may be in the form of a staggered shape or the like so that the contacts can be reversed.

Further, it is needless to say that an arbitrary voltage doubler rectifier circuit can be configured without being limited to quadruple voltage rectifier.

[Effect of the Invention] As described above, according to the present invention, since the movable block accommodates only the rectifier circuit diode, it can be made small and lightweight, easy to handle, and the diodes can be arranged in a substantially straight line. A sufficient creepage distance can be secured and the withstand voltage can be increased. Therefore, it is possible to provide a DC high-voltage power supply device having high safety, a simple structure, and capable of easily inverting the output polarity.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIGS. 2 and 3 are circuit diagrams showing different electrical connections of the above embodiment. 1 ... Movable block 2a-2d ... Diode 3a-3e ... Movable contact 4 ... Fixed block 5a-5e ... Fixed contact 6 ... Power supply 7 ... High voltage transformer 8a-8d ... Capacitor 9a, 9b ... Output terminal

Claims (1)

[Scope of utility model registration request] 1. A DC high voltage power supply device having a movable block (1) and a fixed block (4), wherein the movable block (1) has movable contacts (3a to 3e) and is connected in series. Multiple rectifying diodes (2a-2d)
Is housed inside, and both ends of this diode (2a to 2d) and each series connection point are connected to the movable contacts (3a to 3e). The fixed block (4) has a recess (X) and a high voltage transformer (7). ) And capacitors (8a to 8d) of a rectifying circuit that double-rectifies the output voltage of the high voltage transformer (7) and rectification output terminals (9a, 9b), and a fixed contact (5) is provided in the recess (X).
a to 5e) are formed, and the high voltage transformer (7), the capacitors (8a to 8d), and the output terminals (9a, 9b) are fixed contacts (5
a to 5e), and the recess (X) receives the movable block (1) in a reversible manner so that the movable contact (3a to 3e) of the movable block (1) is the fixed contact (4a) of the fixed block (4). 5a-5e) DC high-voltage power supply device that connects the rectified output so that the polarity can be reversed.