可以使用少量高电压，高值电容和整流二极管构建小型无变压器焊接机电路，以下文章介绍了更多内容。这一想法是由TUN先生的要求。
在我早期的帖子中，我们遇到了一个完整的成熟100 AMP SMPS焊接逆变电路for working with reasonably bigger joints and metals.
设计理念
Being an SMPS based design and involving high power specs, the above circuit is complex and may be out of the reach of the new hobbyists.
根据TUN先生的要求，自制小型焊接机电路是大多数新的爱好者和机械工程师都可以寻求解决偶尔的工作台金属焊接工作。
A mini welding machine without using complex circuitry could probably be built using a capacitive power supply as shown in the following diagram:
The idea shown above is an ordinary电容电源电路在它们的值方面包含极端电容器。
Circuit Operation
在输入侧，我们可以看到强大的500UF / 400V电容器，而在输出侧的同时也可以看到类似的额定电容，用于加强电流。
焊接系统中最基本的最基本参数是高电流，从而在所讨论的金属接头上，可以在短路结处形成极高的温度。
通过使用高瓦特变压器或其在第一段中讨论的SMPS版本可以实现这种高电流产生。
变压器可能太笨重和沉重，而SMPS电路对于新人来说太复杂，唯一通过相对更简单的设计实现高电流焊接的方法可能是使用high current capacitive power supply如上所示。
可以预期500UF / 400V电容器可以产生电流突发，高达36放大器@ 220V，并用补充输出滤波电容加强此电流可以进行一些严重的焊接动作。
您可以使用以下两个计算器软件验证上述规范：
所示的按钮使用户能够通过短裤突发实现焊接作业，而不是通过连续电弧，这可能是危险的，并且不建议在焊接操作中使用任何道路。
The input 500uF/400V capacitor looks massive and it might not be readily available in the market, therefore this can be built by using 500 numbers of 1uF/400V PPC capacitors wired in parallel, this could occupy some space, but still the method is easily achievable.
使用非极性电容器
该电容器需要优选地是非极性电容器，然而，由于二极管以串联定位，因此电解质电容器也可以在没有问题的情况下起到目的。
输出侧的第二电容器可以肯定是电解型。
For more current, the values of the caps could be increased to higher limits, that's the only parameter that needs to be focused on.
CAUTION: The mini welding machine circuit explained above is not isolated from mains and has the potentials to kill a person within seconds, therefore extreme caution is advised while handling this equipment in the powered condition.
你好呀亲爱的，
thanks for your best site,
Inpute voltage is 220 v? How can i use it ?like a welding machine to connect output?
可以融化铁吗？
Thank you
Thanks Ali!
该电路不会熔化铁，但借助焊条加入铁。
just connect the iron which needs to be joined with one of the output terminals, and the other output terminals with a welding rod, now touch the welding rod end at the point on the iron which needs to be fused…
Thanks Swagatam,
input is 230 V AC?
5.6.0.uf 450v can i use?
模型50amp二极管是什么？
50安培推动是一个保险丝？
谢谢
是的。
整流需要50AMP二极管。
the 50amp push is a push button which is required to be pushed and released while operating the power supply
嘿那里，我有一个470uf 250V帽子，我可以用它吗？
还有50A二极管的组件NO。？我有5a二极管，我可以平行放10°吗？
只要输入电压不超过250V标记，可以尝试470UF / 250并将工作。
请在线搜索“50amp二极管”，您将能够找到合适的。
5a平行二极管不会有帮助，不建议使用
嗨先生，我需要向我展示如何将230VAC / 2A降至150VAC / 2A
您应该将230V线线放在步骤顶部，并且根据每个将具有特定电压降的抽头数（230V / No.FTPing）。最后一个是最低的水平，应该连接到地面。您将其从所需的步骤和地面采取的输出。
Hi tun, I do not have asn SMPS version at the moment, however you can build an iron core based auto-transformer for the achieving the results
嗨先生请展示如何制作0-40V 0-3A SMPS
你可以尝试以下概念
https://www.homemade-circulay.com/2017/06/12v-2-amp-smps-circuit.html.
the Rfbb can be changed for getting different voltages at the output
Pls sir,is there any chances of electrocution as this circuit is not isolated with transformer.
yes definitely there is…even in transformer based welding machines you will have this danger
HI SWAG how to make this as adjustable current
嗨Dennis，您可以将100UF的不同范围从100UF放入500UF，并添加一个选择开关以从中选择......
有时我听到电子学生表示他们的电容爆炸，但我从未遇到过这样的情况，但我真的想知道事业以及如何防止这种情况发生。我指的是用于无变压器的电容器，通常与AC线中的电阻并联连接。
Capacitor will blow when the the supply voltage across its terminals exceeds the printed breakdown voltage value. In transformerless power this may happen due to sudden current surge when the capacitor is unable to stop the rise in voltage and bursts, a resistor and zener network will normally prevent this situation.
多谢
电容器与电源串联的用途是什么？如果它唯一的函数是提供小常数电流，那么我们为什么不使用熔丝？
阿巴, fuses are not designed to suppress current they are designed to blow off as soon as the rated current is exceeded through them. A Capacitor cannot be compared to a fuse
非常感谢回复
Sir, Can you please give me a simple transformerless welding inverter circuit with 230v AC input for arc welding of small jobs, brcause in the above circuit description, it is mentioned for short burst of current and not for continuous arc welding.
问候，
Satish Naik
+91-9590018250
SATISH，ANSMPS焊接电路can be quite complex, I do not have an easier version at this moment with me.
Sir, then can I use the above circuit (Mini Welding Machine Circuit for Small Welding Jobs) for small welding jobs?
问候，
Satish Naik
是的，您可以尝试，如果电源不足以您可以并行添加更多电容器
Thanks, I will try it.
问候，
Satish Naik
I made an arc welder off 2 microwave transformers. I love the output (but can’t tell the exact amps).
我想做什么我看到制作一个安培调节器，可以让我舒适地焊接薄型汽车钣金。请帮助我用电路布局添加到我的焊接并实现结果。
Thanks.
限制高电流交流系统中电流的唯一方法是通过串联添加电阻负载。您可以按串联或根据焊接机的规格添加2000瓦加热器线圈
电容器名称请
迷你焊接机
2电容器500UF 400V
1capacitors 500uf 400v ppc
1电容器500UF 400V无抛光电容器
1电容器500UF 400V电解质电容器
请告诉我两个电容器的名字
如何制作50amp二极管
电容器没有名称，只有您的评论中已经提到的规格。输入侧是非极性，输出侧是偏振的。
Hi! What’s the current and voltage output at the welding point?
220.V, 25 amps for a second
再一次问好！我是简单的焊接电路呼吸。你说我可以使用极性电容来代替非极性，因为有二极管。我可以将帽子的负极连接到阳极！
是的，您必须使用二极管的阳极连接电容器的负极
Can you manufacture some pcb’s …qty 10+. Can you do that from a schematic? Without me having to upload a member file?
对不起，目前我不会制造PCB。您不需要PCB为此简单的设计，您可以通过剥离板进行
我很喜欢你直接到地球文章，感谢分享。我确定你可以帮我解决问题。我需要建立一个高压直流电源，将用作电弧发电机。（不适合焊接，更像是Tesla发电机）。我的输入是117Vac rms，我有一个哈蒙特733a变压器，给我2.5kvac ct。我的问题是我应该用的二极管来制作我的桥式整流器？电源输出将连接到5个高压计算机控制开关到中央钨杆周围的钨棒。任何给定的开关在任何给定时间都会有10ms或更少的活动。
The diode specs will depend on the load current. For example if the current drawn by the load is 50 amps, then the diode will also need to be rated at 50 amps (in this case because the duration is only 1 ms)
good time to you sir, please the input and output voltage please
hello alkali, input can be 120V AC or 220V AC, output will be = input AC x 1.41.
亲爱的先生
如何为电池点焊机添加电容器放电电路，放出电容器焊接机？你可以在释放的时候发布图表吗？
Dear Ajith, what is the maximum voltage specifications that you require for the applications?
Input 220 Vac
Out put 3-6 Vdc
电流10000AMPS到30000AMPS变量。
谢谢你的答复。
ajith.
6V，3000安培是巨大的，此时我没有SMPS电路。