KlausST
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Yesterday, 17:42KlausST replied to a thread LTspice Wolfspeed mosfet model doesn't seem to be working in Software Problems, Hints and ReviewsHi, try to connect V1 Minus directely to GND instead of KS. Klaus3 replies | 103 view(s) -
Yesterday, 17:32Hi, For 0.001 you may multiply with 1000, then do the rounding to integer, then divide by 1000 For 0.002 ... multiply with 500 For 0.005 ......31 replies | 1383 view(s)
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16th August 2019, 06:47Hi, Maybe it's time to start to give useful and complete informations. It's neither clear what you need , nor what voltages and currents you are...8 replies | 286 view(s)
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15th August 2019, 21:07Hi, Thank you for the feedback. I made a mistake. I should be: A 9V battery and a 1.5V battery. Connect the PLUS of the 1.5V battery to the...8 replies | 286 view(s)
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15th August 2019, 20:32Hi, At high frequencies you most probably see the capacitive coupling from base to emitter. I assume this also works without supply. It's...1 replies | 84 view(s)
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15th August 2019, 09:15KlausST replied to a thread Why Z and Y matrices must be pure imaginary for reciprocal lossless N-port junction ? in Elementary Electronic QuestionsHi, Maybe I don't understand the question. My answer is: for "lossless" you need "imaginary", because "real" means "loss". Imaginary: pure...2 replies | 167 view(s)
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15th August 2019, 09:10Hi, You really ask if there are screw terminals? For sure there are. They are used for decades of years now and million times every day. ...4 replies | 127 view(s)
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15th August 2019, 07:51KlausST replied to a thread How to add the outputs of a different voltage double ciruits in Analog Circuit DesignHi, Omit the upper GND (symbol). Connect the lower end of R1 with the upper end of R1. Klaus2 replies | 147 view(s)
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15th August 2019, 07:42Hi, What's the problem? Mathematics? Just subtract the values: Example: 9V - 1.5V = 7.5V Hardware? Reverse connect the second one: example: A...8 replies | 286 view(s)
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15th August 2019, 07:35Hi, What exactly is the problem? Either each cable hase a 3 pin connector. D+, D-, GND. And all D+ are joined...as weel as D- and GND Or you...4 replies | 127 view(s)
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15th August 2019, 07:26Hi, Please tell us what is wrong. Tell us the result and tell us carry. Show us your hardware, schematic, code, or whatever you have. ...3 replies | 235 view(s)
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14th August 2019, 21:37KlausST replied to a thread LTC4020 not regulating, blowing sense resistors during debug in Power ElectronicsHi, Did you try to use the I_limit feature? Try it. Start with very low current ... then increase. Show us your PCB layout and a detailed...6 replies | 220 view(s)
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14th August 2019, 19:40KlausST replied to a thread Calculating switching losses of a mosfet when switching energy is not given in Elementary Electronic QuestionsHi, As with many electronics topics: MOSFET manufacturers provide application notes how to calculate this. Those application notes from big...6 replies | 261 view(s)
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14th August 2019, 01:53KlausST replied to a thread Calculating switching losses of a mosfet when switching energy is not given in Elementary Electronic QuestionsHi, Let's say you have a Mosfet with 50% duty cycle, average drain current of 10A and average drain-source voltage of 10V. Then the power...6 replies | 261 view(s)
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13th August 2019, 21:38KlausST replied to a thread Calculating switching losses of a mosfet when switching energy is not given in Elementary Electronic QuestionsHi, It depends what values you use P(t) = V(t) × I(t) But P(avg) is not V(avg) × I(avg) And P(RMS) is not V(RMS) × I(RMS) Klaus6 replies | 261 view(s)
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13th August 2019, 21:23Hi, Your circuit really needs improvement. It really makes no esns to use a 0.1 Ohms resistor as shunt, which guves a very tiny output voltage...6 replies | 201 view(s)
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13th August 2019, 20:45Hi, Yes, I know, that's the problem. But there are many blue LEDs, and every manufacturer provides datasheets. Just go through a couple of...9 replies | 235 view(s)
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13th August 2019, 06:25Hi, Why not * look into a datasheet * measure it by yourself? Klaus9 replies | 235 view(s)
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12th August 2019, 21:06KlausST replied to a thread Sine PWM calculated with pic, instead of using table in MicrocontrollersHi, PWM = pulse width modulation HPWM .... never heared about it.....you mentioned it for the first time now. PWM can be made with software,...15 replies | 537 view(s)
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12th August 2019, 20:51Hi, Are you aware that you didn't show the 470 resistor in your schematic? Generally you are free to use as many resistors you like. The only...26 replies | 1262 view(s)
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12th August 2019, 07:26Hi, Use optical sensor for detecting the bottle/box/ strip. Use a LED/display to show it's state. Use a timer and display the time for each...5 replies | 274 view(s)
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12th August 2019, 07:20Hi, Driver ICs are optimaized for their application ... hard to achive the same performance with discrete parts. Part count, cost, development...6 replies | 221 view(s)
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12th August 2019, 07:11Hi, No, there surely is no 28 bit flash ADC. As already said: it will be a sigma/delta type. I can't think of an application where 28 bit...8 replies | 263 view(s)
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12th August 2019, 06:35KlausST replied to a thread Sine PWM calculated with pic, instead of using table in MicrocontrollersHi, I recommend to use PWM ... and PWM hardware. It generates the perfect timing without processing power. I'm not experienced with PIC, but...15 replies | 537 view(s)
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11th August 2019, 17:08Hi, I'd use fixed point, too. For a 10 bit resolution input ... why do you need floating point? What benefit do you expect? I even doubt if...5 replies | 257 view(s)
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11th August 2019, 17:00Hi, More bits doesn't mean better performance. I've seen a lot of 24 bits ADCs that don't have better performance than 16 but ADCs. And...8 replies | 263 view(s)
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11th August 2019, 15:57Hi, I don't expect higher V_CE than 5V with the given values. If you see higher V_CE, then you should provide your test circuit..an additional...10 replies | 265 view(s)
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11th August 2019, 15:48KlausST replied to a thread Cut-off current through an N-channel power MOSFET with negatively charged gate in Analog Circuit DesignHi, Maybe low microamperes, maybe in the nanoamperes region. It depends on a lot of parameters ... and mainly on the part you use. I expect a...6 replies | 166 view(s)
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11th August 2019, 02:07KlausST replied to a thread Whats the best way to ESD damage a PCB in Elementary Electronic QuestionsHi, "... over carpets and ran up and down stairs with it in my hand,..." ..may cause the whole circuit to be voltage shifted w.r.t EARTH GND, but...6 replies | 273 view(s)
About KlausST
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18th August 2019
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