KlausST
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Today, 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...14 replies | 1811 view(s) -
Today, 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 | 69 view(s)
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Today, 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 | 82 view(s)
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Today, 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...5 replies | 134 view(s)
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Today, 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...2 replies | 104 view(s)
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Yesterday, 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 | 175 view(s)
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Yesterday, 11:29Hi, simple calculation: 50kHz PWM frequency x 4096 (12 bits resolution) = 204,800kHz = about 205MHz input clock. Answer: not possible. ...6 replies | 175 view(s)
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Yesterday, 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...98 replies | 3372 view(s)
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Yesterday, 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 | 449 view(s)
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Yesterday, 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...98 replies | 3372 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 | 180 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 | 149 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 | 180 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 | 206 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 | 146 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 | 146 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 | 391 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...98 replies | 3372 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...98 replies | 3372 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 | 587 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 | 249 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 | 487 view(s)
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4th April 2020, 19:10Hi, a FET has three connections * Gate * Source * Drain in your case the left FET`s source is conneted to VDD and gate and drain are joined...3 replies | 309 view(s)
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4th April 2020, 19:02KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, Please tell which of Brianīs posts are you talking about. Canīt remember he talked about oscillation. But maybe... Klaus98 replies | 3372 view(s)
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4th April 2020, 12:40KlausST replied to a thread Please help me avoid a disaster with my first pcb in Hobby Circuits and Small Projects ProblemsHi, Oh yes, thanks. Indeed itīs the (red) "VCCIO" net connected to pin1 (square pad) of DHT22 (I was confused by the double side assembled...9 replies | 487 view(s)
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4th April 2020, 07:57Hi, * IRef pulls down the voltage of node N * Left side Mosfet tries to pull this node up ... with it's R_DS. Now let's assume R_DS is...3 replies | 309 view(s)
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4th April 2020, 07:46KlausST replied to a thread Please help me avoid a disaster with my first pcb in Hobby Circuits and Small Projects ProblemsHi, I agree with the others. For a first PCB layout it's not that bad. I'd add power supply decoupling capacitors. SMD. Regarding THM...9 replies | 487 view(s)
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4th April 2020, 02:38KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, When the switch is open, then node may be seen as "floating". Floating means "undefined" .... anything can happen. That's why I wrote "2)...98 replies | 3372 view(s)
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