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请确保你清楚此实验的危害与掌握相关高压、辐射处理技巧,在正确的防护下完成此实验,即便如此,此实验依然十分危险,请佩戴个人剂量检测装置与准备暴露紧急处理计划。一旦失误,这将是你的吐血大作!一只参数不详的小型X日本产射线管(from mammography or dental unit),【参考二手价格:200RMB】,ZVS 【30RMB FROM UR LOCAL SELLER】 交流输出高压包 ...
尝试DIY平衡充_
低成本
的_恶劣的_欢迎讨论
jrcsh
11年10个月前
发表于
极客DIY
电池定义为2~3个先画出一个,比较低级的笨方法,日后慢慢完善原理是,电压达到的就用,三极管/场管 旁路充电电压,输入段着对应的降低输出电路,直到充满, 一个STC 15F204E (MCU)因当可以满足 数值来经计算~~~只是原理示意 估计是个~~长期项目
讨论一下,
低成本
的火箭(飞行器)控制系统
qq123456701
6年10个月前
发表于
喷气推进
初步设想是有GPS,和和数据短信,语音功能,走运营商网络! 8KM的串口模块,LoRe WIFI模块(兼做主控), 直接手机控制,做接口! 还有就是 加速度传感器!和气压温度传感器。 第一阶段能够, 采集和记录数据和受控开伞就好了! PCB 3*8CM ! 硬件成本控制在100以内!
大型飞艇可用于未来
低成本
高可靠发射火箭
yang6661262
13年0个月前
发表于
喷气推进
点击此处查看视频火箭从气球上发射能很轻松的突破高度记录,又不会特贵,给各位坛友提供个新的思路。 以下视频包括 JParepspace company这是家致力于用气球发射各类航空器的私人公司,还有出现iowa state university的项目,这所大学的航空航天系在美国也是很好的。 还有段美国早期的实验,最后一段是英国的一对父子设计的他们打算2012年进行实验。 期待中国的私人航天火箭能有...
一个关于X射线的成像噪点问题
低成本
解决办法。
柳画眉
4年6个月前
发表于
核技术与核仪器
对于X线摄影大多数都采用增感屏加相机,然而,X射线轰击在CCD上会产生很多噪点,如果用长焦,隔远点拍,又拍得不是很清楚。所以增加铅玻璃作为阻挡也是一种解决办法。但是铅玻璃很贵,又不给零切。所以就想了一种办法,利用三棱镜的折射,改变X射线轰击CCD的量和方向。来减少噪点,于是经过今天的实验确实大幅度减少了噪点。
关于爱好者
低成本
固体火箭发动机解决方案
Elon·Stark
3年8个月前
发表于
喷气推进
为了满足各位创友对航空航天方面的动力问题凤翎工业将采用集成化&可行性的成本压缩技术为各位梦想制作火箭的创友们提供预计售价为100RMB左右的制式部分复用发动机套件(壳体复用)(该型发动机沿用了凤翎上一代RAIN系列发动机的设计)命名为RAIN-4发动机套件将包含:采用6061-T6打造发动机壳体、华鑫718-6(耐高温光敏树脂)喷管堵头、密封圈。主要燃料类型:knsb(rnx选配)。将在接下来的2...
作为一个标准的无线电精神病,发个关于降
低成本
的液体火箭发动机的疯子贴。
好酷
13年2个月前
发表于
喷气推进
内容:作为一个标准的无线电精神病,发个关于降
低成本
的液体火箭发动机的疯子贴。
磁阻式电磁炮的脉波加速方案以及一种
低成本
工程实现
三水合番
7年9个月前
发表于
电磁炮
严肃内容: 专著/论述
内容:接下来将首先明确定义脉波方案,并进行粗略介绍;之后将详细介绍它的优势,最后将提出脉波方案的一种
低成本
的工程实现——矩阵开关,一个可以用20个开关控制100级的方案。
一种高占空比MOS/IGBT驱动信号隔离传输的
低成本
实现方案
金坷居士
10年6个月前
发表于
电气电工
本帖最后由 金坷居士 于 2014-6-19 20:46 编辑 图图总素最直观的www L1模拟变压器漏感,变压器两个绕组的同名端都在上 U1A对输入信号进行隔离,以允许较高的输入阻抗 当输入从低跳到高的时候,由于C1通过R1充电需要时间,C1那是低电平,U1B输出低电平,此时变压器初级电压上正下负 C1很快就充满了电,U1B变为高电平,此时变压器初级没有电压差,次级不感应出电压 当输入从...
请大家帮忙看看我的科技节计划:一种新的
低成本
无机质谱仪:)
Mr.ienore
10年4个月前
发表于
仪器仪表
本帖最后由 XXXXXnore 于 2014-8-29 00:16 编辑 传统的无机质谱仪需要特殊的电离源来产生带有一定量电荷的离子,这些复杂的电离源加大了质谱仪的成本;那么我们是否可以不通过测质荷比来得到粒子质量,而直接通过动量守恒(也考虑了非弹性碰撞)和动能守恒还得到待测粒子的质量呢? 我们可以让一个已知质量、速度的粒子去碰撞待测粒子,然后测量待测粒子的速度,通过粒子速度的不同来区分不同质量...
“宽轨道”误区以及
低成本
高重复性的业余轨道炮炮管结构提出
Ma3.02的守望
9年10个月前
发表于
电磁炮
严肃内容: 专著/论述
不知是因为加工方便还是什么原因,论坛里大多数轨道炮,尤其是一些刚入门不太懂的坛友的作品,采用了“宽轨道”的形式。 比如当年天真懵懂的我~ 宽轨和窄轨有何区别呢? 先看看大致的磁感线分布: 宽轨: 窄轨: 首先是轨道炮电枢的受力公式:F=BIL B为磁感应强度,I为电流,L为电枢宽度 工作时我们只供给轨道炮电流,这里的B是电流产生的,但这个B的大小如何得出呢? 这里有个定理:安培环路定...
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主研
低成本
民用炸药 有机化学 无机化学
火箭推进实验
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致力于研发安全,
低成本
的火箭相关产品
AP-HTPB燃料小规格药柱制造
Winter
6年2个月前
发表于
航空航天
科创基金
内容:真空浇筑仓依据焓熵前辈给出的:“pvc水管壳体作为真空仓”这种方法进行
低成本
制造。
近代地震仪DS-3K拆解鉴赏
虎哥
4个月13天前
回复于
地理与地质
拆机鉴赏
内容:面元是正儿八经做地震局生意的,他的所谓
低成本
也不是爱好者买得起的。
基于Arduino的开源可拓展四轴无人机
smith
2年4个月前
回复于
航空技术
科创基金
内容:现在最贵的就是光流传感器了, 这玩意其实就是个摄像头, 感觉可以用ESP32-CAM之类的
低成本
方案实现
电池供电的立体声耳机放大器 舞台有线耳返放大器
bg8npk
5年0个月前
发表于
会员海报
极客DIY
内容:便携式电池供电立体声耳机放大器特别为舞台演出设计,适用于鼓手等坐着不动的乐手的
低成本
IEM解决方案
多种气体检漏仪ECOTEC Ⅱ拆解
Arutoria
3年3个月前
回复于
核技术与核仪器
拆机鉴赏
内容:拆解ECOTEC Ⅱ确实是一种以较
低成本
获取RGA的方法,而且INFICON给QMS200/422配套的软件还相对易找,有了仪器端又有了软件端,这样可以轻松的组建一台残余气体分析仪
近代地震仪DS-3K拆解鉴赏
铅球脑袋
4个月25天前
回复于
地理与地质
拆机鉴赏
内容:电磁设计一体化成本低,省略了电磁系统之外再附加电容,光电等技术,也降
低成本
。
马格努斯飞行器(滑翔机)
xxd215
6个月18天前
回复于空间文章
马格努斯飞行器(滑翔机)
内容:
低成本
方面是存疑的,我敢说效率不高装机翼上提供功力……不是,你无动力光滑翔?
关于炮姐转职生产硝酸钾这档事(完)
肖特基的救赎
3年9个月前
回复于
化工矿冶
内容:以后我也会继续探索氨氧化法的
低成本
实现方案
温控器电路方案2选1
jrcsh
15年7个月前
发表于
电子技术
内容:半自动散热风扇 对控制电路 现在有2个方案 不知选用哪个好~~~方案 1 用 339比较热敏电阻 和温度设定电阻的电压 从而起动风扇 (好处温度可调,精度和准确性都比较好)方案 2
低成本
, 一个 热敏电阻 接在功率三极管的 控制供给风扇的电流~~ (好处
低成本
, 温度越高风扇转得越快)~~~~ 天阿~``选哪个好阿
出 台钻一个 详情看视频
qdhuojianren
10年6个月前
回复于
会员海报
内容:哈哈哈,确实得降
低成本
。。
虚拟现实将取代现实,成为主要的生活方式。
acmilan
8年10个月前
回复于
软件综合
内容:虚拟现实的意义在于可以将知识高效而
低成本
地转化为见识,并让见识高效而
低成本
地传播和分享,对每个人的自由发展都有重要的意义。
未来无人机的技术发展趋向
yang6661262
13年0个月前
发表于
航空技术
内容:非常
低成本
无人机 非常
低成本
无人机的研究重点是解决在无人机设计中成本与性能之间的折衷问题。 ,非常
低成本
无人机将是小型、自主和廉价的。,当作为单一部署的系统与其他飞机协同作战时,单独的非常
低成本
无人机不会携带高价值的有效载荷。,非常
低成本
无人机的关键技术是无人机的气动布局,其气动布局将取决于有效载荷、结构设计准则、长期存储后的可靠性以及
低成本
制造等问题。 , ● 非常低雷诺数空气动力学 ● 长期存储用的轴承 ● 推进系统的
低成本
附件(如:燃油泵、发动机控制器、发电机) ● 一次性使用系统的结构设计准则 ● 扩大结构材料的种类(包括
低成本
材料和常用材料
是否开一个分支走多联发的路线,
jrcsh
13年1个月前
发表于
喷气推进
内容:
低成本
下,薄铝管/VPC 使用多联发动机来避免,高压力
搞了个MINI whip有源天线
tangler
6年7个月前
回复于
无线电
内容:不过只有gali-74的1/10价格,NF也比gali-74低.
低成本
还是不错的~
射频仪器三大件的产品趋势探讨
BG7TBL
3年0个月前
回复于
仪器仪表
内容:个人观点,个性化,
低成本
化,不刻意追求指标,满足使用需求即可。
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