KlausST
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Today, 08:03KlausST replied to a thread USB to RS232 exactly similar to COM1 in Service Manuals, Requests, Repair TipsHi, No. It just says it works with your computer, but it does not say anything about compliance. ***** True: RS232 idle state = high = 1 =...7 replies | 151 view(s) -
Today, 07:47Hi, First you need to determine: * How much current can your supply deliver * How much current do you expect your circuit to draw * Measure how...4 replies | 120 view(s)
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Today, 06:40Hi, There is no GND plane? Is it? (Maybe you used copper pour --> this is not compareable to a GND plane) If not: good luck. Especially with...3 replies | 119 view(s)
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Today, 06:32Hi, * bad DVM * bad -5V power supply * too high current Klaus4 replies | 120 view(s)
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Today, 06:29Hi, 1k seems to be OK. But in detail it depends in: * expected speed * drive strength of the output pin * signal trace length, connected...27 replies | 1202 view(s)
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Yesterday, 22:01KlausST replied to a thread average value of as square wave in Analog Integrated Circuit (IC) Design, Layout and FabricationHi, What "design procedure" ? ...for two parts: R, C. R C low pass filters are explained million times in the internet, since it's probably the...6 replies | 151 view(s)
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Yesterday, 20:27KlausST replied to a thread average value of as square wave in Analog Integrated Circuit (IC) Design, Layout and FabricationHi, A low pass filter? Klaus6 replies | 151 view(s)
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Yesterday, 17:28Hi, To be honest: I donīt know the answer. * maybe the copper loss is tested with DC. Then there are additional losses caused by AC: Proximity...4 replies | 142 view(s)
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Yesterday, 17:20KlausST replied to a thread USB to RS232 exactly similar to COM1 in Service Manuals, Requests, Repair TipsHi, Read RS232 specifications. There is no need for 11V. If Im not mistaken, then even 3V / -3V levels comply with RS232. If your connected...7 replies | 151 view(s)
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Yesterday, 17:13Hi, I donīt think this is possible. Most probably the power has a a capacitor at the ouput. It needs a lot of power to charge this capacitor...6 replies | 130 view(s)
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Yesterday, 17:05Hi, We donīt know about your circuit. We donīt know what kind of ADC you try to build. We donīt know what cutoff frequency you like to have. ...2 replies | 77 view(s)
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Yesterday, 07:09KlausST replied to a thread Desperate for help (computer fan control) or this could cost huge $$$ in Hobby Circuits and Small Projects ProblemsHi, Did you read the WIKIPEDA article. It says it delivers 2 pulses per revolution. That's all you need. Measure/calculate the count of...7 replies | 321 view(s)
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Yesterday, 07:02Hi, Simple answer: There is no simple answer for your question. The only thing that is very likely: the less voltage you give to the MCU, the...3 replies | 214 view(s)
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Yesterday, 06:30KlausST replied to a thread Desperate for help (computer fan control) or this could cost huge $$$ in Hobby Circuits and Small Projects ProblemsHi, Did you do an internet search? https://en.m.wikipedia.org/wiki/Computer_fan_control Klaus7 replies | 321 view(s)
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Yesterday, 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? Klaus7 replies | 222 view(s)
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13th October 2019, 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...7 replies | 222 view(s)
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13th October 2019, 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 | 129 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 | 238 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 | 238 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. ...6 replies | 311 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) Klaus27 replies | 1202 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 /...27 replies | 1202 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 | 504 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...27 replies | 1202 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 | 340 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 | 340 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,...3 replies | 150 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...7 replies | 362 view(s)
About KlausST
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