公开(公告)号：JPS5916874B2

公开(公告)日：1984-04-18

申请号：JP5662380

申请日：1980-04-25

Applicant: Mitsubishi Electric Corp

Inventor： MURAKAMI EISHIN ,  YASUNAGA MASASHI

IPC: H01J37/244 ,  B23K15/00 ,  B23K15/02 ,  H01J37/04 ,  H01J37/315

公开(公告)号：JPS5953081A

公开(公告)日：1984-03-27

申请号：JP16261682

申请日：1982-09-17

Applicant: Mitsubishi Electric Corp

Inventor： IWATA AKIHIKO ,  MURAKAMI EISHIN

IPC: H02M3/155 ,  H02M3/10 ,  H02M3/28

CPC classification number: H02M3/10

Abstract: PURPOSE:To enable to accurately remove a ripple voltage by detecting the input voltage which contains the ripple voltage of a switching circuit and operating the switching circuit during ON period which is inversely proportional to the voltage value. CONSTITUTION:Ripple voltage detecting resistors 11a, 11b are connected to detect the ripple voltage at the output side of a rectifier 2. A control circuit 20 inputs the detected voltage from a dummy resistor 8 and the ripple voltages from the resistors 11a, 11b and outputs a signal to control a chopper transistor 4 ON or OFF. The control circuit 20 inputs a triangular wave generator 21, an error amplifier 23 which inputs the detected voltages and a reference voltage from a terminal 22 and amplifies the difference therebetween, a comparator 24 for pulse-width modulating, a pulse width correcting circuit 25, and a base circuit 26 for turning the chopper transistor 4 ON or OFF.

Abstract translation: 目的：通过检测包含开关电路的纹波电压的输入电压并在与电压值成反比的导通期间操作开关电路，使其能够精确地去除纹波电压。 结构：纹波电压检测电阻11a，11b被连接以检测整流器2的输出侧的纹波电压。控制电路20输入来自虚拟电阻器8的检测电压和来自电阻器11a，11b的纹波电压和输出 用于控制斩波晶体管4导通或截止的信号。 控制电路20输入三角波发生器21，输入检测电压的误差放大器23和来自端子22的参考电压，并放大其间的差值;脉冲宽度调制用比较器24，脉宽调制电路25， 以及用于使斩波晶体管4导通或断开的基极电路26。

公开(公告)号：JPS58189951A

公开(公告)日：1983-11-05

申请号：JP7297682

申请日：1982-04-29

Applicant: Mitsubishi Electric Corp

Inventor： MURAKAMI EISHIN ,  YASUNAGA MASASHI ,  SASAKI SHIGEO

IPC: H01J37/22 ,  H01J37/06 ,  H01J37/24 ,  H01J37/248

CPC classification number: H01J37/243

Abstract: PURPOSE:To increase the maximum beam current obtained from an electron gun, by connecting the voltage having the polarity opposite to a bias power source, to the bias power supply in series and by erasing the self-bias voltage. CONSTITUTION:A bias voltage generating part 31 and a self-bias erasing voltage generating part 32 are of mutually opposite polarity and connected in series to each other. In this power supply device, the output voltage of said voltage generating part 32 is erased by raising highly enough the output voltage of said voltage generating part 31 in order to obtain a high bias voltage. On the other hand, when the output voltage of the voltage generating part 31 is lowered and the bias voltage is forced to approach 0V, self vias current (i) is generated as shown in the figure, then a self-bias voltage is generated across a discharge resistance 33a; however the voltage generating part 32 of opposite polarity is connected in series to said discharge resistance 33a, so that a bias voltage is not generated across a load resistance 25. Consequently, compared with the case where the self-bias erasing voltage generating part 32 is not used, a maximum electron beam current which is about 30% larger than that of said case can be obtained by using the same electron gun.

Abstract translation: 目的：通过将具有与偏置电源相反极性的电压连接到偏置电源并通过擦除自偏压来增加从电子枪获得的最大光束电流。 构成：偏置电压产生部31和自偏置消除电压产生部32的极性彼此相反，并且彼此串联连接。 在该电源装置中，为了获得高的偏置电压，所述电压产生部件32的输出电压被消除，使得所述电压产生部件31的输出电压足够高。 另一方面，当电压产生部分31的输出电压降低并且偏置电压被迫接近0V时，如图所示产生自通电流（i），然后产生自偏压 放电电阻33a; 然而，相反极性的电压产生部分32串联连接到所述放电电阻33a，使得跨负载电阻25不产生偏置电压。因此，与自偏压消除电压产生部分32是 通过使用相同的电子枪，可以获得大于所述情况大约30％的最大电子束电流。

公开(公告)号：JPS58179577A

公开(公告)日：1983-10-20

申请号：JP6350282

申请日：1982-04-14

Applicant: Mitsubishi Electric Corp

Inventor： MURAKAMI EISHIN ,  YASUNAGA MASASHI

IPC: B23K15/02 ,  B23K15/00

CPC classification number: B23K15/0013

Abstract: PURPOSE:To enable titled detection using a relatively simple apparatus even when welding is in progress, by providing a radiation passage that gives unobstructed view of a part near the deepest part of penetration of an object to be welded from outside, and detecting radioactive rays generated from the weld zone through the radiation passage. CONSTITUTION:When an electron beam 6 is irradiated to an object 1 to be welded, X-rays are generated from irradiated part or light is generated from molten part. Accordingly, when a radiation passage 16 that gives an unobstructed view of a part near the deepest part 15 of penetration in the weld zone 1 from outside is provided by piercing the weld zone, light or radioactive rays such as X-rays leak to outside from the passage 16. By detecting the radioactive rays 17 with a detecting element 18, a confirmation signal 19 that indicates that the depth of penetration is deeper than the position of the passage 16 can be obtained.

Abstract translation: 目的：即使焊接正在进行中，也可以通过使用相对简单的装置进行标题检测，通过提供辐射通道，使外部对待焊接物体的最深部分附近的部分无阻碍地观察，并检测产生的放射线 从焊接区通过辐射通道。 构成：当将电子束6照射到待焊接物体1时，由照射部分产生X射线，或者从熔融部分产生光。 因此，当穿过焊接区域时，通过穿透焊接区域来提供从外部向焊接区域1中的最深部15附近的部分靠近最深部15的部分的放射线通道16，因此X射线等的光或放射线从外部泄漏 通过用检测元件18检测放射线17，可以获得指示穿透深度比通道16的位置更深的确认信号19。

公开(公告)号：JPS58154472A

公开(公告)日：1983-09-13

申请号：JP3891082

申请日：1982-03-09

Applicant: MITSUBISHI ELECTRIC CORP

Inventor： MURAKAMI EISHIN ,  YASUNAGA MASASHI

IPC: B23K15/00

Abstract: PURPOSE:To improve the accuracy of positions, by outputting the error signal for the weld line of the N-th cycle and processing the signal of the (N+1)th cycle after a computer for signal processing detects the weld line of the (N+1)th cycle. CONSTITUTION:Upon ending of the (N-1)th welding D E, in order to detect the weld line near M necessary for the (N+1)th welding L M, the irradiation point of an electron beam moves to F. F G is the detection period for the (N+1)th weld line, and upon ending of the detection of the weld line, the irradiation point of the electron beam moves to H (the same point as E). The N-th welding H I wherein the errors of the weld line are corrected by the operated result of the N-th weld line calculated during the (N-1)th welding D E is accomplished. Since the conditions for the N-th welding H I are outputted at the irradiation point H, the results of the (N+1)th weld line detected previously are operated during the N-th welding H I.