KlausST
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Today, 07:09KlausST replied to a thread Desperate for help (computer fan control) or this could cost huge $$$ in Hobby Circuits and Small Projects ProblemsHi, Did you read the WIKIPEDA article. It says it delivers 2 pulses per revolution. That's all you need. Measure/calculate the count of...7 replies | 197 view(s) -
Today, 07:02Hi, Simple answer: There is no simple answer for your question. The only thing that is very likely: the less voltage you give to the MCU, the...2 replies | 92 view(s)
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Today, 06:30KlausST replied to a thread Desperate for help (computer fan control) or this could cost huge $$$ in Hobby Circuits and Small Projects ProblemsHi, Did you do an internet search? https://en.m.wikipedia.org/wiki/Computer_fan_control Klaus7 replies | 197 view(s)
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Today, 06:27Hi, We can't see it, because we don't have your datasheet. But maybe it is not printed at all. Why do you need it? Klaus5 replies | 133 view(s)
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Yesterday, 16:53Hi, In ideal case: Yes. But in real world: * The AC adapter will have some power loss = heating. * or in other words: the AC adapter will...5 replies | 133 view(s)
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Yesterday, 11:14Hi, Please don't ask that global questions. The forum can't replace scool or tutorials. Please tell us what you understand so far. Then ask a...1 replies | 101 view(s)
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12th October 2019, 20:48KlausST replied to a thread Protecting the inputs of HV7802 current monitor from damage due to inrush current in Analog Circuit DesignHi, For sure you are right. Not to cause any confusion with my formula, I corrected it. Thanks Klaus4 replies | 202 view(s)
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12th October 2019, 15:10KlausST replied to a thread Protecting the inputs of HV7802 current monitor from damage due to inrush current in Analog Circuit DesignHi, Datasheet says: (corrected according post#3: uA --> uV) 100uV @ 100,000 Ohms is a current of 1nA. Nominally the bias current is...4 replies | 202 view(s)
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12th October 2019, 14:41KlausST replied to a thread How two nodes are communicating in CAN bus protocol? in MicrocontrollersHi, There are a lot of tutorials, as text and as videos. Many of them explain CAN bus communication very good. ...3 replies | 251 view(s)
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12th October 2019, 07:36Hi, You need to externally solder a pull up resistor. (Enabling pull up with CubeMX is "internal" .... which I think does not work) Klaus25 replies | 1086 view(s)
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12th October 2019, 02:07Hi, Important: if you choose the ADC supply voltage to 3.3V, then you need to change your mathematics, too: --> volt = (float)(Sample * (3.3 /...25 replies | 1086 view(s)
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11th October 2019, 18:05HI, your circuit: I donīt like the idea to drive a LED without current limiting resistor. I assume this makes the LED current unpredictable. In...11 replies | 455 view(s)
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11th October 2019, 17:55Hi, From post to post you change multiple things but donīt show us. This makes it really hard to find out what you try to do. * Now the SCK...25 replies | 1086 view(s)
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11th October 2019, 14:35Hi, I currently see no need for this. The higher the impedance the more problematic. This means? The output? --> makes no sense Both...8 replies | 237 view(s)
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11th October 2019, 13:21Hi, did you do an error calculation? or at least an error expectation? If you do this, you will recognize, that the buffer doesnīt give a...8 replies | 237 view(s)
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11th October 2019, 06:32Hi, Imagine Line and Neutral are shorted ... at both sides of L_CM. Then L_CM formes a series impedance And C_Y1 and C_Y2 are shorted, too,...2 replies | 118 view(s)
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10th October 2019, 21:01KlausST replied to a thread Voltage to frequency conversion using VFC32 in Elementary Electronic QuestionsHi, Datasheet says it has good linearity. Usually darasheets are correct. We don't know your expectations regarding linearity. We don't know...6 replies | 282 view(s)
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10th October 2019, 08:17Hi, There are really many possible reasons. I relatively often use PLDs, external SRAMs and microcontroller in combination. Not the brands...2 replies | 179 view(s)
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10th October 2019, 06:46Hi, Please show your complete input and output circuit of the photocoupler. We need to determine where exactly your scope probes are connected...11 replies | 455 view(s)
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9th October 2019, 23:23Hi, I see it differently: SCK is active all the time. But I assume there is a misunderstanding. When I said: " /CS needs to toggle".. I did...25 replies | 1086 view(s)
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9th October 2019, 22:48Hi, Now it's a completely different situation: * only two resistors * no complex impedance You now have a simple resistive voltage divider....5 replies | 358 view(s)
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9th October 2019, 07:48KlausST replied to a thread Simple question on Transresistance Amplifier circuit in Analog Circuit DesignHi, You may simply see the photodiode as current source .... without generating voltage. Now you may say: no current without voltage. Then you...5 replies | 239 view(s)
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9th October 2019, 07:29Hi, Using Brad's formula works for pure ohmic values. But for true impedances (and this is how I understand your question) you need graphic...5 replies | 358 view(s)
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9th October 2019, 06:57Hi, SPI settings have nothing to do with sampling frequency. It depends on how often you toggle /CS .... and read the conversion data. But...25 replies | 1086 view(s)
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8th October 2019, 23:47Hi, It's not clear to me what you want. In either case according the diagram in post#5 your sampling period is much higher than 45us. So if...25 replies | 1086 view(s)
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8th October 2019, 22:10Hi, The TINA plot shows the operation of the "sample and hold" circuit inside the ADC. You don't have access to the purple waveform, nor can you...25 replies | 1086 view(s)
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8th October 2019, 20:46KlausST replied to a thread Detect the absence of sampled AC signal (from digital filter) in verilog in PLD, SPLD, GAL, CPLD, FPGA DesignHi, I can find a question ... and no problem. How can we help? Klaus3 replies | 215 view(s)
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8th October 2019, 20:17Hi, Looks good. Correct voltage levels, clean timing. The SCK frequency seems to be below 1MHz. You could go faster if you like. Why do you...25 replies | 1086 view(s)
About KlausST
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