KlausST
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Today, 02:48KlausST replied to a thread li-ion voltage reducer to 3volt - help needed in Hobby Circuits and Small Projects ProblemsHi, There are linear LDOs. And there are switch mode step down converters, also called buck converters. All have their benefits and drawbacks....3 replies | 97 view(s) -
Today, 02:20Hi, There are electronic devices called capacitors. Do you know them? Klaus Added: Your schematic violates general rules how to use gate...6 replies | 141 view(s)
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Yesterday, 07:55Hi, Basically every overvoltage protection includes: * a serially connected device to limit the current (even wiring) * a parallel connected...3 replies | 129 view(s)
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Yesterday, 07:34KlausST replied to a thread Is it possible to make an IGBT to work at duty cycles up to 100%? in Power ElectronicsHi, I wonder why you still ask the same vague question. It is already answered that there is no problem in continously operating an IGBT. There...16 replies | 571 view(s)
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13th September 2019, 20:36Hi, I can not remember to have seen this circuits before...and I've seen a couple BLDC circuits. Then show us. If it's in "all" ... then I...1 replies | 102 view(s)
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13th September 2019, 19:50KlausST replied to a thread PCB layout design consideration for BLDC controller in PCB Routing Schematic Layout software and SimulationHi, Every Mosfet manufacturer and every gate driver IC manufacturer provides application notes and design notes. They are free. Use them. Klaus1 replies | 116 view(s)
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13th September 2019, 06:36KlausST replied to a thread I2C not working properly in ASIC Design Methodologies and Tools (Digital)Hi, Maybe a dumb question: When your I2C slave has no internal clock, then how can it generate 300ns (or more) delays? I2C_START condition:...20 replies | 774 view(s)
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12th September 2019, 22:18KlausST replied to a thread I2C not working properly in ASIC Design Methodologies and Tools (Digital)Hi, Whan I see your diagrams ... one thing is worrying me: the edges of the data sometimes are very close to the edges if the clock. They should...20 replies | 774 view(s)
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12th September 2019, 22:06KlausST replied to a thread Is it possible to make an IGBT to work at duty cycles up to 100%? in Power ElectronicsHi, I'm not surprised. 100% duty cycle is nothing special, no stressing situation. It's rather the most "non stressing" situation for an...16 replies | 571 view(s)
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12th September 2019, 08:02KlausST replied to a thread Is it possible to make an IGBT to work at duty cycles up to 100%? in Power ElectronicsHi, I wonder why you use that expensive driver circuit. It is designed for * high side switching * high speed switching * power supply *...16 replies | 571 view(s)
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11th September 2019, 22:44KlausST replied to a thread Is it possible to make an IGBT to work at duty cycles up to 100%? in Power ElectronicsHi, Every IGBT can work with 100% duty cycle. It's not a problem of the IGBT, it's a problem of the gate driver circuit. And only high side and...16 replies | 571 view(s)
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11th September 2019, 07:44KlausST replied to a thread Flyback SMPS power MOSFET getting hot? uc3843 pwm converter in Power ElectronicsHi, It's not clear where your arrows point to.. The "air gap" is between the two halves of the ferrite core. (With air gap, the two ferrite...17 replies | 491 view(s)
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11th September 2019, 07:41Hi, I see a lot of misunderstandings. In the order of your post#37: The aim of the constant current is not to provide a precision constant...45 replies | 1253 view(s)
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10th September 2019, 22:10KlausST replied to a thread layout design of an adapter using Altium in PCB Routing Schematic Layout software and SimulationHi, My tablet can't open your attached file. Klaus3 replies | 169 view(s)
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10th September 2019, 22:04KlausST replied to a thread Testing LI Batteries with the help of a device in Hobby Circuits and Small Projects ProblemsHi, You say you want test for "reliability". How do you test and evaluate reliability of LiPo cells? Why not buy a couple of these devices? ...2 replies | 126 view(s)
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10th September 2019, 21:42Hi, I don't understand what is shown on the scope and what signals these are on the schematic.. But one thing I can say: Your analog circuit...3 replies | 143 view(s)
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10th September 2019, 21:08KlausST replied to a thread Implementation of a MUX for selecting from 2 different sets of inputs in PLD, SPLD, GAL, CPLD, FPGA DesignHi, I agree with ads-ee. I really don't have a clue what you are talking about. Draw a sketch of what you want to build and give precise...5 replies | 204 view(s)
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10th September 2019, 20:43Hi, Maybe you mix accuracy with precision? You can't get 0.025% accuracy with all what you wrote before. Even 0.025% precision is hardly...21 replies | 2053 view(s)
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10th September 2019, 07:18Hi, Please try to give useful informations. * I can't find information about voltage drop in post#1. * Now we know that you are concerned about...4 replies | 194 view(s)
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10th September 2019, 06:59Hi, What exactly (of the explanation) you need to be clarified? A voltage reference will not start at random voltages (why sould it in your...21 replies | 2053 view(s)
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10th September 2019, 06:48Hi, Why not looking for the answer on your own? Like this: https://lmgtfy.com/?q=square+wave+through+high+pass+picture Go throught the...6 replies | 260 view(s)
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10th September 2019, 06:44KlausST replied to a thread Flyback SMPS power MOSFET getting hot? uc3843 pwm converter in Power ElectronicsHi, Then just tell what you expect. As already said: a DVM (in DC mode) measures "average". Obviously the output voltage is less than VCC and...17 replies | 491 view(s)
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10th September 2019, 01:57Hi, From the explanation it seems you connected the load on the terminals of the voltmeter....and not directly to the shunt. This is not the same...7 replies | 271 view(s)
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10th September 2019, 01:48Hi, First: Please keep on standard signal flow on schematics = left to right. Yours is reversed. Thus for us your schematic rather looks like a...2 replies | 223 view(s)
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9th September 2019, 21:00Hi, And thermocouple is relative temperature measurement to cold junction, while RTD is absolute temperature measurement. It makes no sense to...7 replies | 367 view(s)
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9th September 2019, 19:56KlausST replied to a thread Micro controller affected by ripple from bldc motor in Power ElectronicsHi, I assume it's not a schematic problem, I rather think it's a PCB layout problem. Most (maybe all) H-bridge systems I've designed work...9 replies | 397 view(s)
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9th September 2019, 19:43Hi, What is the problem? Klaus4 replies | 194 view(s)
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9th September 2019, 19:39KlausST replied to a thread Flyback SMPS power MOSFET getting hot? uc3843 pwm converter in Power ElectronicsHi, This makes me assume you used a DVM to measure this voltages. But a DVM value is average value, which is not useful. Measure it using...17 replies | 491 view(s)
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9th September 2019, 07:05Hi, The relay contacts cause high dV/dt....and due to contact bouncing it will be multiple times with variable timing. You may filter at the...4 replies | 233 view(s)
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9th September 2019, 06:48Hi, You already know that you don't need absolute accuracy. I agree with this. Thus you don't need a 0.1% absolute accuracy resistor (or...21 replies | 2053 view(s)
About KlausST
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