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稳定。
,自动气象站供电电源应具有的最重要特点就是高稳定性和在无干扰条件下运行。,自动气象站气压传感器安装后要稳定4小时,方能观测使用。
连载:DIY适用于高可靠应用的遥控器和接收器
虎哥
7年4个月前
回复于
电子技术
无线电
内容:稳定性则需同时看大电路板的方案。
一种基于大功率FET的数控直流电流源设计
mass_lynnxy
16年2个月前
发表于
电子技术
内容:,使得电流输出范围达到20~2000mA;用户可根据需要手动设置或步进(加减)控制电流输出:通过对直流稳压电源的输出滤波控制,使得电流纹波≤2mA;系统具有超量程自动报警功能;通过闭环控制,使输出电流稳定,此种方案会使恒流输出十分稳定,但是输出电流较小,后级电流放大难以实现。,如此,实现了输出电流的
稳定。
,若采用12位的A/D和D/A,经过计算仿真发现,输出非常稳定,步进可远小于1mA,纹波几乎为0。
用于测向训练和比赛的多功能信标发射机KC1050
科创供销
4年11个月前
发表于
会员海报
无线电
内容:5、技术参数频率范围 VHF:144-148MHz/UHF:430-440MHz频率步进 25/12.5kHz频率稳定度 25ppm占用带宽 16k0
用户实施KC761x能量订正的方法
kcma
25天19时前
专栏文章
科创仪表
内容:方法 (1)在温度稳定的环境中开启KC761x,进入能谱优先模式。
记录自制YBCO超导体的一些问题
Leonard
4年11个月前
发表于
化学
物理
内容:搞来搞去,最后我还是买了相对成熟的产品,才175块钱的温控表,实测效果还可以,稳定后温度控制的波动范围大概在2~3摄氏度。
基于stm32的pid台灯
全桥整流
2年3个月前
发表于
电子技术
动手实践: 实验报导
内容:闲来无事测得书房打开台灯桌面的亮度不过300lux,可以说是昏暗了,看起书来费眼睛,遂萌发出自己搞个台灯,提升下桌面的亮度,使其稳定在一个令人舒适的值。,Ki越大,波动越剧烈,最后趋于1000lux(稳定)的时间也越久。,如图,ki越大,系统震荡越剧烈,稳定所需的时间越长,蓝线(Kp=0.1,Ki=0.1,Kd=0),橙色线(Kp=0.1,Ki=0.01,Kd=0)。
[TAAT]古人先进科技国庆巨献——LTZ1000ACH固态电压超级基准系统
RodTech
11年3个月前
回复于
仪器仪表
内容:,这不太正常,它不是那种铷钟的锁定指示意义的灯,而是基准有没有报废的指示灯,一旦掉电或者怎么搞的灭了就不会再自己亮起来了,除非人为捅复位which会破坏复位孔校准封条,作为个人这没什么,一般掉电再加电稳定后依然能够保持原有精度
简单的无线音箱
deep
13年6个月前
发表于
电子技术
内容:这个东西如果批量生产的话成本应该可以降到1元以下(不算电池) PS.这个电路较不稳定,因为是高频信号,我们又把它放在面包板上,每一个细小的改变都会引起输出频率的变化,甚至是布线变化都要重新调收音机频率,
我做的ZVS.一只场管高烧
rb-sama
13年10个月前
回复于
高电压技术
内容:或者是其它器件 由于随机误差的存在不可能做到全部相同 这是很正常的 ZVS的这个电路 包括很多自激振荡的拓扑结构都是这样起振但是作为推挽拓扑结构 电源管的对称是一定要做到的我上面已经说过了偏磁带来的不稳定性
微波等离子体原理优势以及应用
流落到四川
5年3个月前
发表于
晶体养成所
内容:7.微波发生器是稳定的,易控的。
探讨:铅酸电池的充电问题
hamdad
14年6个月前
回复于
电子技术
内容:经过若干小时(经验数据:12~72小时不等),端电下降到2.10V/单体,然后又要经历一个漫长的端电压上升的过程(经验数据:24~200+小时不等),对于1/100C的处理电流,当单体端电压稳定在2.40V
辉瑞疫苗到底搞了些什么动作?
科创喵
3年11个月前
发表于
生物学
内容:它就像一种夹板,在我们需要向免疫系统展示的状态下稳定蛋白质。,关于3 ' UTR有很多说法,但这里引用维基百科的说法:「3 ' UTR在基因表达中起着至关重要的作用,它影响mRNA的定位、稳定性、输出和翻译效率。,根据世卫组织的文件,辉瑞疫苗3 ' UTR是从「split (AES) mRNA的氨基末端增强子和编码12S核糖体RNA的线粒体中提取的,以保证RNA的稳定性和高总蛋白表达」。
简易中子探测装置的搭建与性能测试
AtomictekOWO
2年7个月前
发表于
核技术与核仪器
动手实践: 实验报导,严肃内容: 教程/课程
内容:1、中子辐射的性质 中子是构成原子核的基本粒子之一,当中子被核力约束于原子核内时它是稳定的,但当原子核被其他粒子轰击后经历一个核反应过程,如(He3,n)(α,n)(p,n)等反应时,释放出带有一定能量的自由中子即为中子辐射,R的阻值要参考CSA以及高压电源的阻抗进行选取,过大的电阻会影响高计数率下偏压的稳定性也将增加输出信号的热噪声,过小又会导致CSA拾取的信号幅度降低。,这一电阻与隔直电容组成的RC回路也将影响探测器的时间特性,隔直电容也要合理选择以避免机械振动使电容产生较为严重的压电效应而影响输出信号的稳定性。
建立一个学生组织性质的科学爱好者社区
虎哥
1个月18天前
回复于
会员海报
内容:是这样的,在简中圈,论坛基本上处于“穷途末路”的地位,DZ最后一个稳定版是十几年前的东西,帖吧没落也已经七八年,就连知乎都差不多快挂了……只要有利于发展科技爱好,我当然应该支持。
【1】项目倡议:数字解调模块KCDEMO
remark
11年2个月前
回复于
无线电
内容:, SSB, CW 频道记忆数量: 每个文件一千个频道 (文件的创建数量由用户决定) 天线连接器: BNC (50 ohm) 使用温度范围: 0C - +50C; 32F - 122F 频率稳定性
DIY简单高性能耳放(仅放大器与保护部分)
1176764177
7年11个月前
发表于
电子技术
内容:调节整体的输入偏置现在来调整环路这是opa2604的伯德图(手册里扒的)发现这个运放有不止一个极点所以仿真一发(注意2光标位置)根据仿真的伯德图可知当增益为13.4dbV时相位差超过135度的部分增益在0db线之上环路不稳定增加
【任某人接着吐血!!】数字灭弧系统测试+重要更新
任某人
12年2个月前
发表于
高电压技术
内容:数字灭弧系统自上次推出以来又在我手中发展了不到一个月,程序终于成熟了,整个系统趋于
稳定。
减少石油依赖 弱化经济风险 德可再生能源利用提速
大仙
16年5个月前
发表于
电气电工
内容:由于各地风力资源不均匀,发电情况也不
稳定。
目前KC上所有的放电间隙开关汇总+分析+实验报告
Ball_Lightning
2年4个月前
发表于
电磁炮
动手实践: 实验报导,严肃内容: 专著/论述
内容:实现这个目标的途径主要有3个:用电路自身上能产生高电压的部件实现击穿气体外部高压输入,在间隙之间产生通路通过向间隙之间发射电子(离子),加热阴极,或是通过气压等物理量的变化来实现气体击穿极限的变化好的放电间隙开关要求触发稳定,(注意,左边电感和发射线圈是有耦合的)优点:触发稳定有效缺点:1.触发单元引出线由于要承受瞬时(几ns)巨大的电流,所以不能离发射线圈太远,否则可能失效2.不能用一个电容先后触发许多级的火花间隙XXXXigger
血的教训能带来技术换代吗?
west_0830
14年6个月前
回复于
极客DIY
内容:引用第5楼玄明于2010-05-26 17:21发表的 :血的教训甚至生命的教训在天朝很难带来相关设施的换代,对和谐产与稳定产生实质危害的事件才可以。
从一起步学做PCB
任某人
12年11个月前
发表于
电子技术
内容:而且PCB做出的电路性能相当稳定,洞洞相比呢……一个虚焊漏焊就够你找个四脚朝天的。。
基于微孔雾化片的雾化器制作
0x00000000
5年6个月前
发表于
电子技术
内容:电路启动后,MCU除了不断进行PID运算调整占空比稳定Boost电路输出电压,还进行LED的控制,及按键扫描水位检测等任务任务.MUC的程序中设定了一个定时器中断,每768个时钟周期进入中断一次,中断中使用
【原创】浅析中国犯罪率增长的深层含义
mithril
14年11个月前
发表于
科学技术学
内容:从文化方面分析:外来文化的侵蚀和冲击下,80年代之后的年轻人的个人主义的那种自我感觉都比我们的后辈要强,而个人主义往往能够滋生一些不稳定的因素;其次就是由于改革开放的推行和中国互联网的迅猛发展,给国人带来的不仅是经济上的客观物质的利益
一些低温漂电阻的测量结果
研究黑魔法的生菜
1年2个月前
回复于
仪器仪表
内容:其中6KΩ电阻测试中出现了明显的热滞,是我测试时太着急,没等上次加热后温度稳定下来、就开始下一次测试所导致的。,从结果上看,这几只电阻的温漂还算一致,虽然温漂有点大,但用作增益控制电阻时,电阻阻值比例的稳定性才是最重要的,所以并没有什么问题。
【DSA神作】XT-2项目证明文件,参考模仿用,再也不用担心写不出项目报告啦!
chemistry02
7年9个月前
发表于
喷气推进
内容:义务、责任、权利等的解释说明证明文件IX 本项目中的大致开支方面及大致资金预算证明文件X 本项目预案(本项目中所有可能发生的危险及其预防措施、应对措施)证明文件XI 本项目中局长父母、局内各稳定成员
用STM32做数字开关电源
novakon
9年1个月前
发表于
电气电工
内容:而这个偏大的部分,不总是线性或者时间稳定的。
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