KlausST
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Yesterday, 23:39KlausST replied to a thread dual NPN and a Diode driveing a P-Channel MOSFET in Elementary Electronic QuestionsHi, I see. But you need to take the overall cost into consideration. * assembling cost for 8 additional parts * increased board size * stock...5 replies | 92 view(s) -
Yesterday, 21:05KlausST replied to a thread dual NPN and a Diode driveing a P-Channel MOSFET in Elementary Electronic QuestionsHi, Not that bad. But a lot of effort. There are high side power switches ... with additional features. Maybe something like this: NCP45524I ...5 replies | 92 view(s)
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Yesterday, 10:16KlausST replied to a thread Simple CMOS Analog Square-Rooting and Squaring Circuits in Analog Circuit DesignHi, I opened the document, but didnīt go deeper in the formula.. So I canīt give an answer. More than 20 years ago I had to design an analog...1 replies | 117 view(s)
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Yesterday, 10:00Hi, an SCR is made for AC operation (at least the current needs to go down to zero periodically), it canīt be used for DC this way. And an SCR...10 replies | 327 view(s)
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Yesterday, 09:53KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, we are now at over 100 posts in this thread .. and still talking about the very basics of electronics. Voltage, current, resistor,...104 replies | 3569 view(s)
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8th April 2020, 18:09Hi, first please explain why you posted in the "RF, Microwave, Antennas and Optics" section. To your question: Again a very unelaborated...1 replies | 274 view(s)
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8th April 2020, 18:03Hi, but you also wrote: ..what about a hand drawn sketch or a photo... Klaus5 replies | 297 view(s)
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8th April 2020, 18:00KlausST replied to a thread ESD protection for Aruduino Input Pins. in Professional Hardware and Electronics DesignHi, sadly you missed to give values. Values with units we can calculate with. Makes no sense for me. -->schow your schematic. No timing...4 replies | 245 view(s)
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8th April 2020, 12:37Hi, personally I donīt like analog multipliers, Iīd rather use the digital solution. Thus Iīm not an expert in this area. But if I had to do...15 replies | 1970 view(s)
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8th April 2020, 11:56KlausST replied to a thread ACS722 Hall sensor IC...minimum loading for output signal voltage pin? in Elementary Electronic QuestionsHi, minimum load resistance means maximum load current. --> use a load resistance >= 4k7 Klaus2 replies | 172 view(s)
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8th April 2020, 01:27KlausST replied to a thread Does ST MC Workbench implement Space Vector Pulse Width Modulation (SVPWM) ? in Power ElectronicsHi, SVPWM is an algorithm, it is firmware, processed by the microcontroller. So everything is available but the code. The code is your job. Or...1 replies | 128 view(s)
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8th April 2020, 01:20Hi, A forum is not meant to do others jobs. It is meant to help to rectify mistakes. If you want others do your job you should post in the "jobs...10 replies | 327 view(s)
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8th April 2020, 01:14KlausST replied to a thread ESD protection for Aruduino Input Pins. in Professional Hardware and Electronics DesignHi, First define the valid voltage levels: V_IH, and V_IL, not the arduino levels, but the 20/24V levels. And define the valid timings. Then the...4 replies | 245 view(s)
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7th April 2020, 13:14Hi, You may say "not correct"... but I did just a general calculation of the required minimum input frequency .. (for any digital PWM...6 replies | 235 view(s)
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7th April 2020, 11:29Hi, simple calculation: 50kHz PWM frequency x 4096 (12 bits resolution) = 204,800kHz = about 205MHz input clock. Answer: not possible. ...6 replies | 235 view(s)
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7th April 2020, 07:33KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, Issues: * The gate voltage is meaningless (as mentioned in posts before, several times) * you can't calculate the gate current from the...104 replies | 3569 view(s)
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7th April 2020, 02:29KlausST replied to a thread Sampling Bandwidth vs. Bandwidth in Tracking Mode of a Sample/Track and Hold in Analog Circuit DesignHi, Undersampling... Many RF systems use undersampling technique. If interested: do an internet search. Klaus5 replies | 473 view(s)
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7th April 2020, 02:18KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, Quite confusing statement. "I can't control the amount of voltage that goes to the gate" --> no comment "thus I can't control the amount...104 replies | 3569 view(s)
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6th April 2020, 21:47KlausST replied to a thread Is it possible to repair this touch Screen FCP Cable? in Hobby Circuits and Small Projects ProblemsHi, For sure you may design an identical flexprint. Klaus5 replies | 248 view(s)
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6th April 2020, 21:44KlausST replied to a thread Why and how is PWM implemented in Field Oriented Control (FOC) ? in Power ElectronicsHi, To say it with your wirds: PWM can alternate between high and low voltage, not current. But current is different than voltage, since the...2 replies | 211 view(s)
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6th April 2020, 21:35KlausST replied to a thread Is it possible to repair this touch Screen FCP Cable? in Hobby Circuits and Small Projects ProblemsHi, Difficult to repair. What about buying another defective monitor of same type? Klaus5 replies | 248 view(s)
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6th April 2020, 21:27Hi, Yes, I agree with schmitt trigger. Most transistor datasheets show an SOA chart. I expect no big problem... but refer to the datasheet. ...6 replies | 237 view(s)
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6th April 2020, 16:00Hi, I have no idea what voltage (range) you are talking about... and AC or DC... what is your "area"? (isolated, earth grounded?) What is meant...4 replies | 181 view(s)
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6th April 2020, 15:33Hi, please explain in detail what you mean with "safety". 6A will limit the load current...but it wonīt protect you against electric shock. In...4 replies | 181 view(s)
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6th April 2020, 06:12KlausST replied to a thread SRAM RC Extraction Simulation in Analog Integrated Circuit (IC) Design, Layout and FabricationHi, It's like a bus keeper circuit. It holds the last state of the (input) line. Klaus4 replies | 424 view(s)
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5th April 2020, 17:55KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, Form the previous discussion you already should know that 1) not useful ... at least problematic 2) is good for analog phase angle control...104 replies | 3569 view(s)
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5th April 2020, 15:05KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, Eventually we see the voltage at the capacitor rising until the diac triggers. But - according datasheet - I can't see why it should stay at...104 replies | 3569 view(s)
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5th April 2020, 10:22Hi, Posting a schematic from a datasheet is useful to discuss the correctness of this schematic. But I assume this schematic is correct ... and...10 replies | 615 view(s)
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5th April 2020, 10:11KlausST replied to a thread Waht is the name of ATX connector on motherboard? in Hobby Circuits and Small Projects ProblemsHi, I did an internet search "atx power supply connector type". And guess what: The first hit gave manufacturer and exact type of the...2 replies | 277 view(s)
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5th April 2020, 10:04KlausST replied to a thread Please help me avoid a disaster with my first pcb in Hobby Circuits and Small Projects ProblemsHi, As a raw rule: put a decoupling capacitor at each power supply pin of every IC. For sure, if the modules have integrated Cs, you may omit...9 replies | 522 view(s)
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