KlausST
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Today, 02:41Hi, The most important is: you need a USB DCP which can supply 1.5V. There is the USB specification, various application notes and forum...1 replies | 72 view(s) -
Yesterday, 08:36Hi, True, the diode solution will be an improvement for noisy supply voltages. The drawback is the known temperature drift of about -4.2mV/°C. ...13 replies | 356 view(s)
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Yesterday, 08:07Hi, 1) you are right ... and not. * Your second circuit shows one capacitor. Just for the function and as low pass filter. * My circuit shows a...13 replies | 356 view(s)
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16th January 2020, 22:15Hi, The circuit is exactly what I suggested. Did you recognize it? Klaus13 replies | 356 view(s)
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16th January 2020, 11:53Hi, If there is audible noise, then most probably the regulator is not continously (clean) switching. * either it is in hickup mode (high load...14 replies | 810 view(s)
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16th January 2020, 11:40Hi, Did you read the datasheet? They don't mention "spring". Klaus4 replies | 245 view(s)
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16th January 2020, 11:36Hi, A battery voltage varies....and the same magnitude in % your sensor signal will vary, too. --> high error. You want it simple... Sadly...13 replies | 356 view(s)
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16th January 2020, 08:51KlausST replied to a thread Need sources for Product Enclosures in Professional Hardware and Electronics DesignHi, There are thousands of shops, maybe thousands of manufacturers. Each of them providing more informations on their shops and catalogues than we...2 replies | 163 view(s)
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16th January 2020, 08:44Hi, I don't think the contacts are made for wire and wrap. Look for one that solders the wires to it. Or you have to try: * connectors for...4 replies | 245 view(s)
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16th January 2020, 08:35Hi So what's the question now? * the code? How to transfer multiple bytes to the Uart peripheral? * or the hardware? How the Uart transfers the...10 replies | 405 view(s)
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16th January 2020, 08:19Hi, I agree with audioguru. The voltage will be almost zero. But yes, even if small it will be proportional to input current. Klaus38 replies | 1184 view(s)
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15th January 2020, 23:54Hi NE5534 is not unity gain stable. Expect oscillation. Klaus4 replies | 234 view(s)
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15th January 2020, 23:40Hi. The FIR should not create DC. But for sure the values are multiplied wit 2^17, thus the output signal will be multiplied with the same factor...5 replies | 199 view(s)
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15th January 2020, 23:34KlausST replied to a thread Need to reduce drain voltage spike in LM5019 Buck converter in Power ElectronicsHi I don't think the peaks are real. Rather a measurement artefact. Show a photo of the circuit including scope connections. Klaus4 replies | 201 view(s)
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15th January 2020, 09:02Hi, "Brand new" does not necessarily mean that they are suitable. Voltage rating and capacitance rating is not enough information to buy such a...12 replies | 473 view(s)
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15th January 2020, 01:57KlausST replied to a thread [SOLVED] Need very basic R-C "delay off" circuit in Hobby Circuits and Small Projects ProblemsHi, Just press the "Mark as solved" button. Klaus7 replies | 361 view(s)
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14th January 2020, 21:44Hi, You need to add a GND connection. Do you have a proper twisted pair cable with about 120 Ohms characteristic impedance? Klaus ...4 replies | 236 view(s)
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14th January 2020, 07:59KlausST replied to a thread Earth leakage Detection "positive" as well as "Negative" >30mA. in Professional Hardware and Electronics DesignHi, Please give complete informations. The only useful informations is "30mA" With "earth leakage" I think about AC ... which is alternating....5 replies | 295 view(s)
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13th January 2020, 03:27KlausST replied to a thread Bootstrapping board for programming the ESP32 in Hobby Circuits and Small Projects ProblemsHi, Why not use the 5V input and use the internal regulator? This is the safe solution. Many linear regulators are able to withstand voltage...6 replies | 384 view(s)
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13th January 2020, 03:23KlausST replied to a thread [SOLVED] Trouble with frying 74LS11N AND Gate in Hobby Circuits and Small Projects ProblemsHi, "Connected drain" to an input... also need pullup / pulldown resistors. General rule: Don't leave any input (used or not) of any IC...7 replies | 369 view(s)
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13th January 2020, 03:00KlausST replied to a thread Microcontrollers and a lot of advice - PIC , AVR, ARM - Software - Books - Boards in MicrocontrollersHi, You may use many devices on one SPI bus. Why three busses? In many years of programming I always avoided bit banging .... because of...6 replies | 465 view(s)
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12th January 2020, 20:59KlausST replied to a thread Does It Make Sense to Connect SMD Fuses In Parallel Instead of Using Bigger One in Power ElectronicsHi, Did you try it? Did you do some calculations? Please show the results. I think these are just assumptions, but other users may take it...3 replies | 274 view(s)
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12th January 2020, 20:38KlausST replied to a thread ZMR330: 3V3 Linear regulator needs diode connected cathode to input voltage? in Elementary Electronic QuestionsHi, True. It was not always needed. Only when the output goes higher than the input. Is this the case with your application? Klaus6 replies | 401 view(s)
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12th January 2020, 20:34KlausST replied to a thread Adding CCFL light or LED backlight to a 6 digit/7 segment LCD display in Professional Hardware and Electronics DesignHi, There are some displays that are especially made for both operating modes. But it's a compromise. If you have one made with reflective back...3 replies | 272 view(s)
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12th January 2020, 15:27KlausST replied to a thread Resistor at input to high side current monitor IC in Elementary Electronic QuestionsHi, What V_sense do you expect, worst case? Klaus3 replies | 301 view(s)
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12th January 2020, 15:20KlausST replied to a thread ZMR330: 3V3 Linear regulator needs diode connected cathode to input voltage? in Elementary Electronic QuestionsHi, A bit more infirmation, please. Why do you ask? .... when the datasheet does not mention it. Klaus6 replies | 401 view(s)
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11th January 2020, 13:46Hi, Mains frequency is 50 Hz, thus you have 20ms period time. If you use 1MSample/s this means 20.000 samples per period ...in my eyes this is...4 replies | 453 view(s)
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11th January 2020, 13:22KlausST replied to a thread Require a Desgin of A MOSFET based Switch , for study purpose . in Power ElectronicsHi, At first please clarify the expected function: In your first post you wrote "MOSFET based Switch for ON and OFF". Thus my first idea was a...19 replies | 752 view(s)
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11th January 2020, 12:50Hi, And the fact, that you did not yet show us your PCB layout .... lets me assume: There is a good chance that the problem is caused by the...14 replies | 810 view(s)
About KlausST
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