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Hello mtwieg, many thanks for your comments. It is the reason i started the thread. maybe dick_freebird has more. As i told i do NOT have the experience.
Dear all, many thanks for your sharing and reminding. As dick_freebird mentioned it would be RF CMOS SOI for the power converter. It seems pre-research tech. It maybe be the trend in the future and maybe not. Anyway your answer enlarged my views. thanks a lot.
Hi Guys, happy new year! I am applying for the job position in https://www.coolstartechnology.com and have discussed the issue with Dr. Shuming Xu, CTO in the company. He claimed the latest answer is 4meg HZ and 94% efficiency. Frankly it is beyond my experience. In my opinion 500K HZ is the...
@crutschow I agreed your setting: the input common mode voltage is 2.5V and the output is offset to 2.5V. It is important to the whole simulation result because the voltage at any key points would be far away from zero and power rail.
the key point is the common mode voltage of these two input. Anyway you can get enough reference circuit from LT6375 data sheet. It would support +-270V common mode voltage.
http://cds.linear.com/docs/en/datasheet/6375fa.pdf
Good luck.
Frankly I think you should add one buffer before the gain OPA. As KlausST suggested the PT1000 is a variable resistor and you will get the voltage signal if you supply the PT1000 with the constant current source. Anyway the voltage signal will be varied if the input resistance of the next gain...
Guys many thanks for your attention. I just found one reference design from
https://www.linear.com/solutions/3489
It is used forward Topology with Active Reset circuit. do you have any other solution with less components?
I agreed with Audioguru. The drill requires a high current and the simplest way is to replace the battery. Frankly it is easy to buy one battery pack for the laptop computer. maybe the second-hand one is enough.
1) you can connect a small load for example, 48ohm and then try to start the SMPS.
2) Check the start process if the output voltage would reach your setting.
3) run some time if the output voltage would be stable at your setting and check if there is any component hot.
4) increase your load...
Derun93, why not power these temperature sensors from the + terminal of the top cell and - thermal of the bottom cell? and the output voltage of these temperature sensors would have the identical GND and can read by ADC easily.
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