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约找到 1273 条结果,耗时 0.291 秒
RC4580并联功放
dafeng133
3年7个月前
回复于
极客DIY
内容:第一级34倍放大,第
二级
49个运放并联,也就是98个运放同时推一颗喇叭,规格书说每路有50mA,估算了一下,大概输出阻抗是3欧。
日常飘水火箭&摔火箭的奇怪方式+1
暮羽要摸鱼
7个月23天前
发表于
喷气推进
内容: 最近闲来无事想着在
二级
火箭发射前搓根水火箭玩一下,随便测试一下
二级
火箭的航电。
二级线圈炮
ビリビリ女
14年5个月前
回复于
电磁炮
内容:如果你想“好好做”的,务必做一个自动的触发,因为手动切换开关只会使第
二级
为第一级减速。
紧密型连续加速线圈与单级加单级线圈的本质区别
潜伏者
15年8个月前
回复于
电磁炮
内容:而是通过弹丸的位置,感应副线圈,由副线圈关断主线圈,然后主线圈内产生高压,并且与下一级的电容组串联后,给第二个主线圈供电,由于瞬间高压,在第
二级
加速的触发电阻中产生足够的触发电流,所以主线圈二开始工作。
千萬不要學我...
master863
12年0个月前
回复于
电磁炮
内容:我放的视频里面,第
二级
没有这样做,威力小,并且看着电路板上的布线也马上要出现烧断的现象了。
通过环形磁铁是否能增加效率?
flyjack
9年9个月前
回复于
电磁炮
内容:不是 而是 前一个对于通过中间的弹丸来说,会提供一个翻转的力,后一个会提供轴向力 是用电池提供250A电流,不是靠电容,因此和线圈存储能力关系不大,电流曲线类似下图 后面的是第
二级
、第三级的波形
关于线圈炮光电开关延时问题
007技术宅
10年1个月前
回复于
电磁炮
内容:引用 595051294:还有个可控硅导通时间,,误差30%~40% 感觉不出来的,lz可以试试第一级和第
二级
远一点光电触发,后面的单片机延时触发,后面的线圈就可以紧密点了。
620v IGBT半桥式 MCU开环控制 紧密加速线圈炮测试更新:七级已破百
莱特
7年0个月前
回复于
电磁炮
内容:引用 iSee:再上一些数据和分析:第一级平均离开速度:36.84m/s,9.36J,ΔE=9.36J,平均加速度22622.35第
二级
平均离开速度:52.71m/s,19.17J,ΔE=9.81J,平均加速度
回 1楼(warmonkey) 的帖子
ddomax
11年6个月前
回复于
仪器仪表
内容:
二级
运放的输入电阻换成了300R,不然貌似不稳定(反馈电阻同比例放大)FPGA内建FIFO,不过顶多270Kbit样机得有十足把握了我才会去做,一块4层和1块双面,打样就得500RMB,再加上芯片,样机估计超过
一种紧密加速
MicroSound
12年7个月前
回复于
电磁炮
内容:20%,磁耦合40%,那么前一级中没有耦合到加速体的剩余能量有(1-20%)(1-40%)=48%之多,这些能量不好好利用,才会导致效率奇低,为了增加耦合性,可以考虑在第一级线圈上饶少数几匝,然后串联到第
二级
能不能做个电磁弹射器?
普通用户
9年7个月前
回复于
电磁炮
内容:我昨天想了下,能不能搞个基本的模块化和多级线圈一样,但是每个线圈一样、电流、磁场参数也一样只是时间不同,这样,牵引力就基本上是均匀的然后通过统一的控制器来按顺序通电第一级的通电时间最长,第
二级
稍短,第三级通电时间更短
KCSA 萬戶-Ⅰ型火箭 實時信息集合帖
焓熵`
13年3个月前
回复于
喷气推进
内容:3.箭体及其他部分(会会及焓熵负责) 目前箭体规格趋于稳定,头锥完成近半,一
二级
箭体已经切割完成,但并未进行固定板的安装钻孔。 ,
二级
尾翼预定由子林提供 固定板到位80%,一级缺少一块外径规格153的圆板;
二级
缺少两块用于航电舱隔离的圆板,一块推伞板。 ,一
二级
分离用转接口已经处理,一
二级
分离用防火板已经到位。 ,
二级
开伞用爆破插销未制作,一级开伞用爆破插销已经落实到位,等待安装。 ,一级发动机及
二级
发动机固定方式均以设计完成,等待安装到位。
新手想做一个关于电磁加速器各种参数的计算器,来请教一下物体间的关系
riabox
13年6个月前
发表于
电磁炮
内容:4.一级电磁圈与
二级
电磁圈之间的距离(D)?
万户计划(第一阶段)·立项
路人114514
1年1个月前
发表于
喷气推进
内容:本计划第一阶段火箭总重小于等于50kg三、本计划第一阶段飞行高度大于30000m四、本计划第一阶段火箭结构预想分为三段式,由两级液体推进与一级固体推进构成第一级:液氧-甲烷预计飞行高度:海平面~20000m第
二级
百度下载的论文,请高手帮忙分析下 在百度下载了一篇论文截取其中一段给大家看看
张静茹
12年3个月前
发表于
电子技术
内容:②模式二 ( T1 - T2)S1 关断, S4 仍导通, S1 两端并联电容 C1 充电至 Ui, S2 两端并联电容放电至零时, S2 的反并
二级
管 D2 导通。
TK-5 IGBT半桥回收电磁炮
托卡马克
3年5个月前
发表于
电磁炮
动手实践: 实验报导
内容:测试时候的数据第一级1250us 第
二级
720us第三级540us 第四级450us第五级410us电压为340v前两级 第一级剩余82v 第
二级
129v 速度30.7动能4j效率9.2%前三级 第一级剩余,82v 第
二级
129v 第三级144v 速度39.2动能6.47j效率10.2%前四级 第一级剩余86v 第
二级
131v 第三级128v 第四级155v 速度45.13动能8.59j效率10.4%五级 ,第一级剩余81v 第
二级
128v 第三级140v 第四级158v 第五级168v 速度51.23动能11j效率10.8%相比于设计还是有点差距,主要原因是实际线圈制作并不能完全达到数据标准,测试时候的没有安装固定
发射一只硝糖火箭
liuxunxing
8年9个月前
回复于
喷气推进
内容:我的设计初衷是按照反坦克导弹的构造去设计的,所以第一级我希望燃烧快速,第
二级
续航啦。
【干货】磁阻炮杂谈
三水合番
7年2个月前
回复于
电磁炮
内容:引用 ChairmanC:类似buck/boost电路,电容先对一级电感放电,当电流达到最大值(电感两端电压最小)时,断开一级开关,利用续流二极管使一级电感对
二级
电感(发射线圈)放电,之间还有稳压和滤波的电路
第二把电磁木仓,6级,8mm钢珠,效率2+%,初速47.5m/s。
liunian198
11年5个月前
回复于
电磁炮
内容:调试一级16.5m/s
二级
25.5m/s 三级32.3m/s 四级37.5m/s 五级43.3m/s 六级47.8m/s 感觉第四级没有调整好,折腾了这么久懒得再改了,在调试的过程中,发现了一个问题,
关断结构的疑问
潜伏
9年9个月前
回复于
电磁炮
内容:我不希望用单片机解决问题(没有编程的东东)……我的思路是用触发器来产生信号,比如第一级的触发器工作后,产生信号,igbt顺着这个信号开启和关断,第
二级
一样,触发器工作后,产生信号,igbt再顺着这个信号开启和关断
我的单片机控制电路。
胖喵可不胖
10年0个月前
发表于
电磁炮
内容: //给mic4417的CTL输入低电压,使MOS导通 delayms1(92); P1_0 = 0xff; //给mic4417的CTL输入高电压,使MOS阻断 //第
二级
开关时间控制
准备做两级加速,先上电路图
小小kiss
14年4个月前
发表于
电磁炮
内容:下次再试,先把这个成功了,再做两级加速,不过我不知道SCR控制级那个限流电阻应该加多少,大哥们能指导一下不,免得又被秒杀了上图是我才设计的两级加速,其实用不着单片机,但是我就是学单片机,不用那玩意有点不爽,
二级
的匝数跟线圈的长度打算跟一级相同
这么多人在研究电磁炮,为啥不联合起来呢?
shenxinaz
11年6个月前
回复于
电磁炮
内容:单级的那点初速度,还不如用橡皮筋的力量,那么,是不是可以把这个东西拆成几块,第一级(某个初速以内)用最低成本的弹性材料加速,第
二级
(某个速度)可以采用电磁炮模式,第三级采用轨道炮模式?
重新认识马克思思想
玄明
16年1个月前
回复于
科学技术学
内容:企业生产产品只是为了销售,并非为了实用,也就是如果
二级
经销商需要100辆汽车,汽车厂商就会生产100辆,而实际上能卖出去的汽车只有50辆而已。
第一把电磁发射器
Dimitri_Ivanovich
4年10个月前
发表于
电磁炮
动手实践: 实验报导
内容:第一级数据:第
二级
数据第三级数据我从某宝上选了号称每分钟正好12800rpm的380电机(12v状态下)然后在联轴器上用了一个3d打印件和钕铁硼固定住定位销。
重新认识马克思思想
小明
16年1个月前
回复于
科学技术学
内容:而这种发展继续前行,就会逐渐暴露自己本身存在的问题,向另一个方向发展,“计划式”经济的发展----"如果
二级
经销商需要100辆汽车,汽车厂商就会生产100辆,而实际上能卖出去的汽车只有50辆而已。
怎么看可控硅的型号KG,KK,KP
ビリビリ女
15年0个月前
回复于
电子技术
内容:我用的电容第一级1600UF 第
二级
也是1600UF 360V 第三第四级1300UF360V 第五级第六级第7第八400V 400UF左右。
完成,我第一個電磁炮-30V三級加速磁阻式Coilgun
yeah
15年2个月前
回复于
电磁炮
内容:第
二级
和第三级这又要进行仿真计算了,它还与弹丸线圈的速度有关了。
回 14楼(qq363606096) 的帖子
胖喵可不胖
11年8个月前
回复于
电磁炮
内容:如果电流达不到触发可控硅的要求,就不会触发
二级
线圈。
信息汇总:长征5号遥二火箭发射出现异常
拔刀斋
7年6个月前
回复于
喷气推进
内容:上次也是
二级
YF75D出问题,最后几秒钟喷管温度迅速升高大面积烧红、速度停止增加,后来dv差了一点,靠远征上面级救回来。
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