KlausST
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Today, 00:55KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, As already mentioned: You don't measure the gate current. --> If you want to know the gate current, then measure the gate current. ...59 replies | 1975 view(s) -
Yesterday, 18:36KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, well done :-) 1) typical with SCR and triacs. The gate needs some current to trigger, the diac needs some voltage to trigger, the...59 replies | 1975 view(s)
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Yesterday, 16:00KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, Yes, for sure. It does what it should do. It measures the voltage at the given node with respect to GND. If you want to measure the...59 replies | 1975 view(s)
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Yesterday, 13:55KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, Didn't we recommend several times to put the load at tha anode side? May I ask where you see the benefit when you repeatedly connect it...59 replies | 1975 view(s)
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28th March 2020, 17:24Hi, You know: No signal goes one way, it always needs a return path. And if the return path is long and high impedance the whole signal will be...20 replies | 504 view(s)
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28th March 2020, 14:03Hi, PCB layout: See the picture. I showed the current flow loop for the gate current. A good layout: should have as low as possible enclosed...20 replies | 504 view(s)
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28th March 2020, 08:47KlausST replied to a thread Tool for transforming python code to FPGA for Machine Learning in PLD, SPLD, GAL, CPLD, FPGA DesignHi, Maybe there is...but it's against the idea software vs hardware, It's an often made mistake to look/write HDL like software. Software is...6 replies | 570 view(s)
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28th March 2020, 07:35KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, GROUND is just a name. A name for the node which the designer (you) decided to be the voltage reference. Theoretically any node in any...59 replies | 1975 view(s)
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27th March 2020, 23:21Hi, You know you gave just half of the requested informations... You will have your reasons.... Thus I can't verify the some items. Anyway....20 replies | 504 view(s)
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27th March 2020, 22:18Hi, Please show: * the PCB layout * the brand and exact type of R59 (datasheet) * where at the PCB exactly you connected scope_GND and...20 replies | 504 view(s)
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27th March 2020, 13:23KlausST replied to a thread Help needed; Check of PCB and some other questions in Hobby Circuits and Small Projects ProblemsHi, your traces on your PCB will introduce some resistance (mainly depend on width, length and thickness) and impedance (almost independent of...12 replies | 720 view(s)
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27th March 2020, 12:03KlausST replied to a thread Help needed; Check of PCB and some other questions in Hobby Circuits and Small Projects ProblemsHi, I agree FvM. A GND plane shold give some benefit. Maybe add some capacitors for supply voltage stabilisation. And maybe add GROUNDed tracks...12 replies | 720 view(s)
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27th March 2020, 11:42KlausST replied to a thread Looking for an non-invasive sensor for a fitness machine in Hobby Circuits and Small Projects ProblemsHi, There is a motor? There are wires? You can measure the current? All these informations I miss in post#1. Klaus4 replies | 327 view(s)
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27th March 2020, 08:03Hi, I'd consult the datasheet. And if it does not give the expected information I'd start a simulation. You may also build the circuit and use...2 replies | 215 view(s)
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26th March 2020, 09:14Hi, Many users expect this. And from my experience especially those who give vague informations. Glad to see that this isn't the case here. ...18 replies | 540 view(s)
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26th March 2020, 08:00KlausST replied to a thread Force sensitive resistor controlling output voltage in Analog Circuit DesignHi, I'd go with the Opamp solution. It is simple. Just a couple of parts. And it works perfectly. It's not the problem of the Opamp that it...5 replies | 256 view(s)
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26th March 2020, 07:38Hi, Quite straight forward: Since sinusoidal signals are analog signals: Go to any electronics distributor's internet site of your choice and do...3 replies | 275 view(s)
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26th March 2020, 07:30Hi, What do you expect from us. You don't show your code, so we don't have the chance to verify it. Or do you expect someone writing the whole...18 replies | 540 view(s)
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26th March 2020, 02:14Hi, In my eyes there is no clock divider .... indeed I expect a clock multiplier. (PLL) Clock cycles =(time delay) *(clock frequency/4). If...7 replies | 361 view(s)
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26th March 2020, 02:06KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, Eventually you dud whatvwe told you from the beginning (keep it most simple, remove R5)... and now it works. It works like expected. Well...59 replies | 1975 view(s)
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25th March 2020, 15:27Hi, general rule: Donīt leave any input floating!. Klaus3 replies | 264 view(s)
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25th March 2020, 14:21KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, and set your Scope input to "DC". Klaus59 replies | 1975 view(s)
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25th March 2020, 13:47KlausST replied to a thread Where to get schematics about SCRs full-wave triggering circuits ? in Power ElectronicsHi, Why do you use R5? (It makes things more complicated than necessary) What does tell you the SCR is not fully ON? Klaus59 replies | 1975 view(s)
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25th March 2020, 10:07KlausST replied to a thread the inductive impedance connected to drain can cause negative resistance at gate? in Analog Circuit DesignHi, you just post a snippet of the text. We donīt know the context. So we need to guess. I guess it should be "impedance" instead of...2 replies | 249 view(s)
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25th March 2020, 01:07Hi, Even EXCEL can do. Klaus9 replies | 467 view(s)
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24th March 2020, 08:48KlausST replied to a thread SMA-Microstrip transition removal for large-signal measurement of PA in RF, Microwave, Antennas and OpticsHi, And I wonder where the problem is to post the requested back side. I'm no HF guru, but what I've learned so far is, that - especially with...26 replies | 1220 view(s)
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24th March 2020, 07:35Hi, You don't give much information. The obvious first thing to do is reading the manual. There is a manuat section "Adjusting the Pad's...3 replies | 302 view(s)
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