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约找到 5783 条结果,耗时 0.402 秒
0.005%THD 160mW 300kHz平坦 5元成本DIY甲类耳放。
novakon
10年9个月前
回复于
电子技术
内容:运放不稳定的原因,涉及到的相关电路理论,展开讲会比较冗长,在这里就不详细介绍了,为了解决这个震荡的问题,我花了十几个小时的时间,最终是看TI的一份资料解决的。,如果没有补偿,运算放大器不可能稳定:当运放的输出通过反馈网络回到输入端时一定会有延迟,这会使得反馈信号相对于输入信号相位发生改变。,正是这个滞后,使得运放电路十分不
稳定。
2个月的有控火箭计划,多图,欢迎拍砖
1235642
8年10个月前
回复于
喷气推进
内容:我按照他们的设计做了一台几乎一样的真空仓,事实证明我即使在原有的基础上把1l的泵改成2l,内部加装磁力搅拌器和保证结构稳定的架子,所有的成本也要比1300低,不可谓不暴利
回 楼主(普通用户) 的帖子
拔刀斋
12年8个月前
回复于
喷气推进
内容:(厚的边界层受到激波压缩造成不稳定的影响要大得多,设计上必须防止)对于固体火箭发动机的喷管,由于边界层沿很长的内孔积累,边界层厚度可能较大并减小有效截面积。
测试报告
阿丕
14年6个月前
回复于
喷气推进
内容::将药柱灌装于成型纸壳内,最好直接灌装到发动机内腔,然后通过钻孔等手段获得药柱形状,可以避免多药柱,分装结构产生的不确定压力值和可能的爆炸情况必须安装头锥,特别是大直径火箭,以避免成功的发射之后出现不稳定的飞行状态
瞎画个TL494的半桥驱动高压包电路,还请大家指正!
yangzhaofei1
12年0个月前
回复于
高电压技术
内容:从图腾输出的信号一开始还挺好的挺稳定的,可是现在就变成了下面的样子(下面的信号是从图腾电路输出的信号,用于驱动后级的MOS管) 左边的信号有的当输入信号0时输出有3V左右,到了后面就成5V了 这些信号都是时好时坏的,,不稳定,如果低电压5V,就已经导通了,就没有意义了,想最低的电压是0V,不知道原理图中是不是图腾的电路有问题呢,是不是应该加入些什么,是不是饱和或者~~~ 还有就是把信号放大后方波的一开始有很大的抖动
2KW 实验性CCPS 开始设计!
金坷居士
12年3个月前
发表于
高电压技术
内容:的信号变为频率为原先一半且50%占空比的方波3.第二个分频器再一次分频,并由非门(4011与非门拼的)运算成所需的两路信号4.两个TC4421负责推动GDT *如果有UCC的话可以省略CD4011了 本电路理论上稳定
电爆炸驱动飞片的仿真
explo-py
2年6个月前
发表于
高电压技术
物理
内容:,如下所示:从数值模拟结果的压力云图可以看到,在铜等离子体高压作用下聚酰亚胺被迅速剪切形成飞片,我们进一步导出飞片的速度,如下所示:从飞片速度曲线中也可以看到飞片的速度在初始阶段迅速升高,然后逐渐趋于稳定
刚完成的智能机器人寻线避障小车
血狼
13年1个月前
回复于
机械与工具
内容:因为最后实地测试的时候传感器的距离在很大程度上决定了你的车对黑线的敏感度和稳定性。
进口相干Coherent激光功率计,全新岛津分子泵,Q开关,整条完整的YAG激光20瓦
改装pcp
8年3个月前
发表于
跳蚤市场
内容:用欧米茄 mV电压转换器测试了下,用手电照射,灵敏度很高,不到2秒数值就稳定了。
【出售】尼康Nikon D40 单反相机 ¥750 包邮
S.D.P
11年11个月前
回复于
跳蚤市场
内容:只要有个好的赤道仪和稳定的脚架,用ISO100的情况下。。。。
《导弹总体结构设计网络课程》
虎哥
16年5个月前
回复于
喷气推进
内容:(3)离轨速度、导弹下沉量及其安全性 导弹的离轨速度一般应大于20m/s,以提高导弹的稳定性、抗初始干扰的能力和导弹下沉的安全性。 ,(6)其它 如稳定性、质量和尺寸、环境条件、燃气流的防护、可靠性、维修性、安全性、隐蔽性和成本等方面的要求。 ,(5)载体的颠簸、摇摆对初始瞄准的影响:对初始瞄准要求较高时,导弹初制导可应用红外位标器(宽视场)、电视摄像机将导弹引入雷达波束、发射装置采用稳定平台或采用速率陀螺反馈的天线稳定系统以保持射向
稳定。
《导弹总体结构设计网络课程》
虎哥
16年5个月前
回复于
喷气推进
内容:(5)具有较大的斜吹力矩,横向稳定性不好。,[size=2][b][b][/size][/b][/b]鸭式气动布局图 二、正常式的特点 (1)由于弹翼位于舵面之前,不存在因舵面偏转对弹翼引起的下洗,纵向和横向稳定性较好。 ,这样既保证了需要的静稳定性,又可增大舵面至导弹质心之间的距离和便于弹翼与弹身承力构件的布置。 ,(4)具有较高的舵面效率和需要的纵向静稳定性 这种布局舵面前无弹翼干扰,故舵面效率较高。,由于在攻角增加时,弹身升力呈非线性增加,故当攻角增加时,静稳定性相应减小,使机动过载大幅度增大。
帮忙看看这个示波器怎么样?
阿凡达
14年8个月前
回复于
电子技术
内容:概述 本机性能稳定,功能齐全,设计思路即从面向学生实验及技术人员维修(如手机维修,主板维修等)使用出发,超高性价比,适用性强。
做一个迷你功率升压电路 哈哈
老大119119119
10年6个月前
回复于
电子技术
内容:要冲15秒才能冲到400多 还有就是电容的大小影响着输出的电压 同样的变压器用224电容 输出的电压 是用104电容的2倍 这个电路不好整 看你能不能帮我在这个电路的基础上让它 更稳定
【奖励800kcb】请帮助设计一防倒灌电路
潜伏者
15年7个月前
回复于
电子技术
内容:稳定输出2000W,瞬间峰值3200W,绝对的50HZ正弦波!
80M 波(3.5xxMHz)简单发射电路
nmjnsjj
13年3个月前
回复于
电子技术
内容:该机性能稳定,便于携带和维护,是全国青少年无线电测向锦标赛核准用机。
你还在用老旧残次的IRF3205吗
北落师门
9年5个月前
回复于
电子技术
内容:要求不高索性买拆机的,稳定性还好些。
超级高压电输出 10A 超级简单 容量超大
agckl1456789
13年0个月前
回复于
高电压技术
内容:之后的镇流器就只相当于电阻了,所以输出可能瞬间有10KV,但不是持续的瞬间是肯定的,但是镇流器跟电阻作用不太一样,交流电的电流是变化的,每当变化一下,电感都会有反向电势,可以阻碍电流变化,输出的波形比较稳定
失败了的SSTC。。。
ry7740kptv
14年5个月前
回复于
高电压技术
内容:(后发现ATX电源工作也不正常了,有噪音,输出不稳定,估计也快寿终了。。。)
回 15楼(jrcsh) 的帖子
逆天
12年7个月前
回复于
极客DIY
内容:(话说这个小黄浆比4寸的动力浆风还大,不过4寸离光盘更近影响大)另外,转子进入稳定的状态后只有小幅度的高频振动了,不会解体的。
正面人格和负面人格
法式油炸薯条
9年4个月前
回复于
科学技术学
内容:但是论坛上的话,人员相对稳定,很多老会员都在论坛呆了很多年了,也将继续呆下去,为自己一点小面子跟人闹僵,以至于长期性,持续性撕逼,完全没必要。
猜想:肼和甲醛的缩合
liberite
13年7个月前
回复于
化学
内容:唉,你们讨论半天全没说到要点上1成六元环驱动力更大,因为更稳定,大环的形成是缺乏动力学途径的,基本上不会生成,即使生成也是复杂的混合物,没有制备意义,除非可以外加模板2缩合很难得到H2N-NR2这样的物质
能材的一些骚想法
退坑的chokkankun
3年9个月前
回复于
化学
内容:这种乙二醛二亚胺结构怎么看怎么不
稳定。
。。
低压,高效,高保真推挽电路!【原创】
立棍
10年7个月前
回复于
电子技术
内容:基本的偏流设计缺乏稳定性,只能工作在甲类状态。,相对比较
稳定。
DIY高精度电容电感表(LC METER)
novakon
10年0个月前
回复于
仪器仪表
内容:经过研究,原因并不复杂:由于LM311是高速比较器,输出的上升沿和下降沿都特别快(输出上拉电阻我还是换回了1K),而面包板上的电源线太长了,瞬时电流在电源线上产生很大的压降,导致比较器电源不稳定,输出状态来回切换
93 讲讲你玩单片机的经验
warmonkey
16年0个月前
回复于
电子技术
内容:厂家的资料才是最重要的,他们指定的电容量可以保证工作
稳定。
DIY【民科牌】X波段射频信号源
GiroPetrenko
4年2个月前
发表于
无线电
内容:但是确实可以确定不是电源之类的干扰,因为可以看出开机后谐振腔电压缓慢下降(过载),反射级电压稳定在-275V左右,突然示波器显示该波形。
近几年高氮含量杂环化合物的进展。
天泽
6年3个月前
回复于
化学
内容:这是这几年合成到现在性能和稳定性最理想的炸药, TKX-50,爆速9600,但是比TNT 还顿感。,而且可能特别高温
稳定。
为什么直流电能接高压包
奇侠
14年1个月前
回复于
高电压技术
内容:在高中物理书里面有提到过,闭合线路中的部分导体在所处的磁场中,磁通量变化的话就会使那部分导体产生感应电流,驱动高压包的稳定直流电,经过一些电子元件(如三极管)后变成高频的直流电,波形图为一阵一阵的脉冲直流电
RF-DRPSSTC 桌面级射频磁暴线圈 V1.0
joyeep
14年1个月前
回复于
高电压技术
内容:GMS90,这个最高在40MHZ 没有问题高频当然会引起其他电子设备不稳定,尤其带无线的设备,最上面第一张图,我的CCD 已经被严重的影响了,出现了栅格条纹。
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