调用API函数hi_adc_read()读,用(float)vlt * 1.8 * 4 / 4096.0转换成电压,请问可能有什么原因导致电压数值不准
2022-06-16 10:53
S2387-66R型光电池,下面是我在应用中遇到的问题:1)按照我的原理图焊接之后,把光电池的阳极接在ADL5304的Pin4-INUM引脚,阴极接Pin17-2VLT,采用手册中给的2.00V偏置的方式,光电池
2018-09-27 11:47
我找不到怎么处理这件事。谢谢你的帮助。邮递员422字节 以上来自于百度翻译 以下为原文I can't find how to deal with this. Thank you for any help. POR_Warning.txt.zip 422 bytes
2019-05-20 06:00
改变载波频率(由4500变为5000HZ),没有什么变化。检查皮带、齿轮箱等均未见异常。换了一台同型号的变频器,好了。 对照检查此变频器,也未发现异常,于是又将原变频器还原,一切又正常了。 到此是什么问题? 后来追问现场人员,他们说试验时只是动了变频电机侧的接线柱,下线时未发现接线松。 可能什么问题?
2023-11-22 07:14
亲爱的先生们,我正在试图解决一个电容键盘上的问题,这很奇怪。有时电容键盘被卡住,不再工作,只是重新编程的CY8C21434 MCU解决了电容键盘的块。我们得到的块只是在主电源上做一些电压骤降。在230V中断之后的不同板上,微控制器的闪存完全归零(每一个字节为0x00),并且在一些罕见的情况下,Flash MEM刚刚损坏(校验和不同于HEX)。在固件中没有对Flash进行写入。在第一个固件中,没有看门狗,也没有LVD启用,而且CPUH时钟设置为工作@ SysCLK/1,但是电源电压为3.3V,这是不允许的(数据表页19/50),因为振荡器工作在有效的操作区域之外(是的,CPU在大多数情况下工作)。也在VOR之外。使用WDG的新FW,启用LVD和SysCLK/4(现在在VoR中工作)似乎都正常工作,没有块。现在,如果我可以接受一个闪光灯的腐败(在董事会附近有一个电抗器),我不能解释HO能把所有的闪光灯都擦掉。有人能告诉我MCU是如何被完全擦除的吗?最好的问候和许多感谢将帮助任何人 以上来自于百度翻译 以下为原文Dear Sirs, I'm trying to solve a problem on a capacitive keyboard that is quite odd. Sometimes the capacitive keyboard is stuck and doesn't works no more; just a re-programmation of the mcu CY8C21434 solves the block of the capacitive keyboard. We obtain the block just doing some voltage dips on the main supply. On different boardsafter 230V interruptionthe flash of the microcontroller is completely zeroed (every single byte is 0x00) and in some rare cases the flash mem is just corrupted (checksum different from hex). No writing to flash are done in the firmware. In the first firmware there was no watchdog and no LVD enabled moreover there was the CPU_Clock setted to work @ SYSCLK/1 but the supply voltage was 3.3V and this is not allowed (datasheet page 19/50) because the oscillator operates outside the valid operation region (yes the cpu in most cases works also outside VOR). With a new FW with WDG, LVD enabled and SYSCLK/4 (so now working inside the VOR) all seems to work correctly and there are no blocks. Now If i can accept a flash corruption (there is acompressor near the board)I can't explain ho can all the flash to be erased. Can someone tell me how the mcu can be completely erased Best regards and many thanx to anyone will help
2019-07-18 08:49
没有金刚钻别揽瓷器活,最好用的就是一把大功率烙铁加空压机,烙铁融化后用气枪一吹就干净了,拆一个IGBT模块不用十分钟。如果没有空压机,用大功率电烙铁和吸锡器也不难,下边简单说说,每个牌子变频器拆起来会有点小差异。
2019-08-08 06:10