JPS6041835Y2 - Shock voltage generator - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an impulse voltage generating device which prevents discharge of charge from a charging capacitor when a gap breaks and obtains an impulse voltage with a waist long wave tail.

In recent years, as nuclear fusion research has progressed rapidly, the capacity of impulse voltage generators that generate ultra-high voltage, which is the energy source for fusion, has increased, and as the capacity increases, demands for more stable and faster devices are increasing. Therefore, there is an urgent need to develop a self-triggering impulse voltage generator in each stage using a sealed gap.

Conventionally, as shown in FIG. 1, the impulse voltage generator has been configured to connect a charging capacitor C in parallel to a DC power source S via a charging resistor Rc between each stage of the charging capacitor C via a damping resistor Rs. Main electrode of connected metal ball etc. g□9
g2. ...? grn and g-engine'? g2'?・・・
9gm' (hereinafter collectively referred to as gtg') are provided facing each other, and trigger electrodes Tr1. Tr2°..., Trm (hereinafter collectively referred to as Tr) are inserted to create a distortion type gap G1. G2. ....

Gm (hereinafter collectively referred to as G), each trigger electrode Tr is connected in multiple stages (two stages in the same figure) via a trigger resistor RT serving as a trigger impedance, and the first stage and second stage are connected. Gap G1. Both trigger electrodes Tr1.G2. Each Tr2 is connected to a trigger terminal Tro and grounded via a grounding resistor RG.

Note that T is an output terminal. Then, the DC power source S(
After charging both charging capacitors C in each stage to +E and -E with terminal voltages of 10E and -E, respectively,
When a trigger voltage is applied to the trigger terminal Tro and the gaps G and G2 are destroyed, the potential at each point is (49 points)=E.

(ha, two, to) = o, (hot) = pond, Tr,, T
r3=E, Tr2. Tr,=3E.

Therefore, in the third stage gap G3, the potential of one main electrode = pond, the potential of the other main electrode 2' = ground, and the potential of trigger electrode Tr3 = E, and first, one main electrode and the trigger electrode A discharge occurs between the transistor Tr3 and the gap G3 is destroyed.

Then, in the same manner, the gaps G4, . . . , Gm are destroyed, and a required shock voltage is generated at the output terminal T.

Here, each trigger electrode T inserted into the gap G of each stage
Since r is coupled in multiple stages (two stages) at a time via the trigger resistor RT, the amphibious electrode g9g' and the trigger electrode A large potential difference is obtained between each of them and the Tr, and the gap G is destroyed quickly and stably.

By the way, in the above-mentioned conventional impulse voltage generator,
When each gap G is destroyed, the charge in the charging capacitor C is released through the trigger resistor RT, as shown in the loop circuit shown by the dashed-dotted line, so it is not possible to obtain a long-wave impulse voltage at the output terminal T. Can not.

Therefore, in order to obtain an impulse voltage with a long wave tail, it is necessary to increase the value of the trigger resistor RT, but if the value of the trigger resistor RT is increased, the trigger current becomes smaller and the trigger characteristics of the gap G deteriorate.

1. Taking the above points into consideration, this device prevents the charge from being discharged from the charging capacitor when the gap is broken, and obtains an impulse voltage with a long wave tail. This embodiment will be described in detail with reference to the drawings from FIG. 2 onwards, which show the embodiment.

Note that the same symbols as above indicate the same thing.

First, ① Examples will be explained.

As shown in FIG. 2, as in the conventional case, a charging capacitor C is connected in parallel to a DC power supply S via a charging resistor Rc.
Between each stage, main electrodes g9g' such as metal balls connected via damping resistors Rs are provided facing each other, and the opposing gap between the main electrodes gy g/ is defined as a gap G, and each gap G is A trigger electrode Tr is inserted into each trigger electrode Tr, and each trigger electrode Tr is connected in two steps via a trigger impedance Z composed of a parallel circuit of a trigger capacitor C' and a DC coupling resistor r, and a series circuit of a trigger resistor RT. The trigger electrodes Tr and Tr2 in the gaps G1 and G2 of the first and second stages are respectively connected to the trigger terminal Tro via a parallel circuit of a trigger capacitor C' and a DC coupling resistor r, and a ground resistor RG. ,
It is grounded via RG to form a trigger circuit.

However, the resistance value of the trigger resistor pT (the resistance value of the DC coupling resistor r, the resistance value of the DC coupling resistor r), the resistance value of the charging resistor Rc, the capacitance of the charging capacitor C> the capacitance of the trigger capacitor C'.

Therefore, in the above embodiment, after each charging capacitor C is charged by the DC power supply S, a trigger voltage is applied to the trigger terminal Tro, and each gap G is destroyed by the same operation as in the conventional case, and an impact is applied to the output terminal T. When obtaining a voltage, for example, in the loop circuit shown by the one-dot chain line, the charges of the first and second stage charging capacitors C are transferred to the trigger capacitor C.
It is almost blocked by ′ and is not released.

That is, when all the gaps G are destroyed, the charges in the charging capacitors C of each stage are hardly lost by the trigger capacitor C', so that an impulse voltage with a long wave tail can be obtained at the output terminal T.

Here, each DC coupling resistor r is each trigger capacitor C
It has the function of discharging the electric charge of ' and coupling each trigger electrode Tr with direct current.

Next, FIG. 3 showing another embodiment will be explained.

In the embodiment of FIG. 2, the trigger resistor RT can be reduced in value because it is included in the trigger capacitor C', and therefore the trigger low loss RT may be eliminated as shown in FIG.

In that case, since the value of the trigger impedance 2 becomes small, a large trigger current can be obtained instantaneously, and the trigger characteristics of the gap G are improved.

As described above, according to the shock voltage generator of this invention,
The main electrodes for discharging connected between each stage of the charging capacitor connected in parallel to the DC power supply through the charging resistor are provided facing each other, and the opposing gap between the main electrodes is defined as a gap. Insert each trigger electrode into the waist, through a parallel circuit with a trigger capacitor having a capacitance smaller than the capacitance of the charging capacitor and a DC coupling resistor having a resistance value larger than the resistance value of the charging resistor. By connecting the trigger electrodes in each gap from the first stage to the N stages to the terminals, the trigger electrodes are connected in N (multiple) stages, respectively, and each trigger voltage is output through a parallel circuit similar to the parallel circuit described above. It is possible to prevent the release of charge from the charging capacitor at the time of gap breakdown without deteriorating the trigger characteristics of the gap, and to obtain a shock voltage with a long wave tail.This invention is a shock voltage generator that operates stably. can be provided.

[Brief explanation of drawings]

Figure 1 is an electrical wiring diagram of a conventional impulse voltage generator;
The following drawings show embodiments of the impulse voltage generator of this invention, FIG. 2 is an electrical wiring diagram of one embodiment, and FIG. 3 is a partial electrical wiring diagram of another embodiment. C...Charging capacitor, C'...Tri is capacitor, G...Gap, g9g...
...Main electrode, Rc...Charging resistance, r...
...DC coupling resistance, Tr...Trigger electrode, S
...DC power supply.

Claims (1)

[Scope of utility model registration request] Discharging main electrodes connected to each stage of a charging capacitor connected in parallel to a DC power source through a charging resistor are provided facing each other, and the opposing gap between the main electrodes is defined as a gap. A trigger electrode is inserted into each gap, and each trigger electrode is connected in parallel with a trigger capacitor having a capacitance smaller than the capacitance of the charging capacitor and a DC coupling resistor having a resistance value larger than the resistance value of the charging resistor. Each trigger electrode of each gap from the first stage to the N stage was connected to a trigger terminal that outputs a trigger voltage through a parallel circuit similar to the parallel circuit described above. Shock voltage generator.