KlausST
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10th November 2019, 22:51KlausST replied to a thread Help to build my auto disconnecting circuit. in Hobby Circuits and Small Projects ProblemsHi, Useable informations I see * auto disconnect * 12V Everything else is in best case "vague". I even don't know what you mean with...10 replies | 325 view(s) -
9th November 2019, 22:30Hi, The BLDC does not decide whether open or closed loop. In opposite to an open loop ... a closed loop has feedback. Klaus2 replies | 159 view(s)
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9th November 2019, 15:53KlausST replied to a thread Regulating temperature of mains connected heating element: Skipping mains half cycles in Power ElectronicsHi, Yes, exactly. The idea behind this is that the positive halfwave should be equally loaded as the negative halfwave in either case. This...19 replies | 565 view(s)
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9th November 2019, 08:26KlausST replied to a thread How to generate sine wave using Verilog? in ASIC Design Methodologies and Tools (Digital)Hi, I expect there is some description where you found the code. --> please post the link to the internet page. Klaus5 replies | 328 view(s)
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8th November 2019, 18:02Hi, Many unexperienced people "fill" the spaces between traces and think this now is a GND layer. But it is not! From the electrical view, a...5 replies | 335 view(s)
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8th November 2019, 14:03KlausST replied to a thread "RS-232 port to transfer data to PC for analysis" in Software Problems, Hints and ReviewsHi, RS-232 is mainly a definition of timing and voltage levels. It is an interface description. It is not a true protocol. a UART is an...6 replies | 321 view(s)
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8th November 2019, 13:27KlausST replied to a thread Ohm's Law and Power calculation problem in Elementary Electronic QuestionsHi, You want others to do something....Is this really the ob of forum members to work for you - for free? We can only validate information...21 replies | 825 view(s)
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8th November 2019, 02:00Hi, What is "this board"? Klaus5 replies | 396 view(s)
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8th November 2019, 01:43Hi, What are you talking about? Really cinfusing. * There are many relays working with 230V AC. An AC/DC adapter is some kind of power...5 replies | 396 view(s)
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7th November 2019, 17:54KlausST replied to a thread [SOLVED] Generating Sine Wave Through External DAC (STM32) in MicrocontrollersHi, --> "interrupt" method is the recommended method. **** Waveform/Amplitude modulation. * "Waveform" is one thing (lookup table is a good...10 replies | 336 view(s)
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7th November 2019, 08:29Hi, All the informations can be easily found in the internet. Did you try an internet search on your own? You say "motor" and you say "output...2 replies | 228 view(s)
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6th November 2019, 23:25Hi, Let me guess: * the analog voltage input is not connected and thus floating * or the input is connected and there is either true signal or...9 replies | 427 view(s)
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6th November 2019, 23:16KlausST replied to a thread Is it a transistor or a mosfet? in Service Manuals, Requests, Repair TipsHi, You have a PCB, maybe from a known device with known vendor and article name...with parts assembled, with part numbers printed on it... You...17 replies | 758 view(s)
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6th November 2019, 07:47KlausST replied to a thread Symmetric Source + 10V and -10V - help me !! in Hobby Circuits and Small Projects ProblemsHi, A forum is not meant that others do your job. A forum is meant to "help". And helping means that you do the main job, show your result,...4 replies | 416 view(s)
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5th November 2019, 22:13Hi, I also expect EMC problems. Bad PCB layout, no EMC filters, bad wiring...how can we know? Klaus7 replies | 315 view(s)
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5th November 2019, 21:53KlausST replied to a thread Is it a transistor or a mosfet? in Service Manuals, Requests, Repair TipsHi, From post#2: Is the expected function so secret that you can't explain? Klaus17 replies | 758 view(s)
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5th November 2019, 08:50KlausST replied to a thread [SOLVED] Protect FPGA Pin from negative voltage in Hobby Circuits and Small Projects ProblemsHi, For sure you may use higher ohmic resistor. The drawback is: the higher the resistor value, the lower the cutoff frequency. It is a first...18 replies | 544 view(s)
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5th November 2019, 08:09KlausST replied to a thread Is it a transistor or a mosfet? in Service Manuals, Requests, Repair TipsHi, This is not a true schematic. And additionally the function is not obvious. I recommend to read the documentation to the "schematic" or...17 replies | 758 view(s)
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5th November 2019, 08:03KlausST replied to a thread Interfacing one4x4 keypad with two 8051 microcontrollers at a time in MicrocontrollersHi, I agree with FvM. But the "slave" needs to read both lines and rows. If it is for redundancy (safety) reasons: * both should work...3 replies | 177 view(s)
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5th November 2019, 07:51KlausST replied to a thread How to perform FFT on random data signal correctly in MATLAB? in Digital Signal ProcessingHi, Before you talked about FFT. There the window size should be 2^n samples (n = integer). Now you talk about DFT. Why? DFT window size...3 replies | 397 view(s)
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5th November 2019, 01:27Hi, Show a couple of detailed photos. Klaus7 replies | 243 view(s)
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4th November 2019, 21:48Hi, I don't agree. It's like with every other electronic part: you need to read the datasheet and keep on the datasheet informations. I never...3 replies | 197 view(s)
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4th November 2019, 21:38KlausST replied to a thread high side PWM switching, to control LEDs separately in Elementary Electronic QuestionsHi, In the schematic there is a mistake. "Q? drain" must not be connected to 12V. And giving the parts a unique name could be useful. ;-) ...4 replies | 271 view(s)
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4th November 2019, 21:24Hi, Pictures say more than a lot of words. Please post a link to the datasheet. And what do you expect? Did you use the recommended PCB...7 replies | 243 view(s)
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4th November 2019, 18:57KlausST replied to a thread How to perform FFT on random data signal correctly in MATLAB? in Digital Signal ProcessingHi, Better give all the really used values than vague informations. Can you post a picture of your FFT signal input (time domain) Klaus3 replies | 397 view(s)
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4th November 2019, 18:34KlausST replied to a thread Ohm's Law and Power calculation problem in Elementary Electronic QuestionsHi, You talk about R, an ohmic load. But an ohmic load has a constant relationship of V and I. But in your case it is not constant, it varies...21 replies | 825 view(s)
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4th November 2019, 07:27KlausST replied to a thread NPN having its VBE protected against reverse voltage....but unecessary? in Analog Circuit DesignHi, Or with even less components: use an adjustable voltage regulator. Space saving, low cost... Klaus21 replies | 640 view(s)
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4th November 2019, 01:59KlausST replied to a thread Relay substitution and other help with Solar powered plant watering machine in Hobby Circuits and Small Projects ProblemsHi, I don't see the need for optocouplers at all. * the left one just switches a LED, thus does not need an isolation * the right one has input...2 replies | 257 view(s)
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3rd November 2019, 21:17KlausST replied to a thread Ohm's Law and Power calculation problem in Elementary Electronic QuestionsHi, The waveorm is one problem. But as already written: your liad dies not behave like an "R". Your informations do not match. * your load is...21 replies | 825 view(s)
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3rd November 2019, 19:45Hi, Donīt ever draw more than 500mA. Mind: This is against USB specification. Please avoid this if you plan it for a commercial product. ...5 replies | 226 view(s)
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