KlausST
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Today, 11:03Hi, I didn't go through the complete circuit. A couple of issues. You say this circuit is for "cooling". But then there are a lot of diodes in...1 replies | 41 view(s) -
Today, 01:05KlausST replied to a thread Error while trying to compile a header file in Xilinx SDK in MicrocontrollersHi, What compiler? What target device? Klaus2 replies | 104 view(s)
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Today, 01:02Hi, If you wire VCC, then the target will be supplied. But for sure it has limited power drive capability. For a single IC this would be OK,...6 replies | 295 view(s)
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Yesterday, 21:50Hi, This is not a serious question, is it? Electronics without power does not work. In doubt consult the datasheet. Klaus6 replies | 295 view(s)
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Yesterday, 16:46KlausST replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects ProblemsHi, I donīt agree. Slo diodes may increase switching noise. Many (all?) Diodes usually are fast at turn ON. From high impedance to low...26 replies | 1145 view(s)
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Yesterday, 13:47Hi, I canīt see nothing special. Itīs like the schematic shows. And I think itīs correct thay it is done. Nothing to worry about. But I canīt...7 replies | 246 view(s)
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Yesterday, 12:36Hi, "Short" in the schematic or in the real circuit? * in the schematic: Only where a dot is, there is a connection. Where no dot is, there is...7 replies | 246 view(s)
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Yesterday, 12:13Hi, secret circuits secret values secret informations ... We want to help, but how do you think we can help this way? Klaus13 replies | 277 view(s)
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Yesterday, 08:39Hi, Before you design .... you should do some considerations and calculations. What are your expected R and C values? What's the input...13 replies | 277 view(s)
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6th December 2019, 15:03Hi, to adjust to DAC digital input range --> and thus itīs analog output range to full scale... Klaus4 replies | 176 view(s)
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6th December 2019, 14:19Hi, "100uF" does sound like an electrolytic capacitor. These are not suitable for fast spikes. They are for low frequencies only. --> use a...4 replies | 190 view(s)
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6th December 2019, 13:54Hi, I donīt think that 0x61 is the correct device address. How did you decide it? The wiring is unclear. Draw a sketch. Klaus Added:4 replies | 176 view(s)
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6th December 2019, 10:00KlausST replied to a thread Connect MQ135 Gas Sensor to Raspberry Pi 3B+ in Hobby Circuits and Small Projects ProblemsHi, are you sure 5V is within the specified ADC input range? What output value do you expect with this configuration. What range of ouput...4 replies | 202 view(s)
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6th December 2019, 09:50KlausST replied to a thread Seeking for zerocrossing switching without using microcontroller in Power ElectronicsHi, You talked about a reactive load... and power and resistor and capacitor. Thus I assumed you talk about load resistor and load capacitor. But...9 replies | 386 view(s)
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6th December 2019, 08:39KlausST replied to a thread Seeking for zerocrossing switching without using microcontroller in Power ElectronicsHi, I'm not sure whether you ask about this: P(in Watt) = V x A x cos(phi) V and I need to be RMS values. Klaus9 replies | 386 view(s)
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6th December 2019, 07:40KlausST replied to a thread Charging Voltage for a 1.2V NiMH Battery in Hobby Circuits and Small Projects ProblemsHi, To me it seems you did not read how to charge a NiMH battery or you did not understand it. Some basics (details are already given as link...11 replies | 388 view(s)
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6th December 2019, 01:12Hi, It's not fair that you should build a prototype without knowing full specifications. Try to get full requirements first. Klaus6 replies | 276 view(s)
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5th December 2019, 17:40Hi, I agree: If you have experience with AVR, then use them. There are so called "pico power" AVRs for low power consumption. For sure only during...6 replies | 276 view(s)
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5th December 2019, 11:55KlausST replied to a thread Arduino based irrigation controller misbheaving at a particular site. in Hobby Circuits and Small Projects ProblemsHi, * Not driven at all (input, floating) * weak pull down with external current to HIGH. * switched as ouput, driven LOW, but too high...7 replies | 296 view(s)
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5th December 2019, 10:07KlausST replied to a thread How to create a voltage selector circuit in Hobby Circuits and Small Projects ProblemsHi, Your circuit: We see a lot of "voltages". Some are used as supply, some are used as input signal AND supply. Not knowing the meaning of the...6 replies | 257 view(s)
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5th December 2019, 07:39KlausST replied to a thread Charging Voltage for a 1.2V NiMH Battery in Hobby Circuits and Small Projects ProblemsHi, Pleae clarify: You said you "found about charging voltage" but then later you said you "did not find about charging voltage". It's...11 replies | 388 view(s)
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5th December 2019, 00:32KlausST replied to a thread How to create a voltage selector circuit in Hobby Circuits and Small Projects ProblemsHi, Unclear, uncomplete informations. A black box with some lines... I don't know what this means. If I'd select the current flow .... I'd...6 replies | 257 view(s)
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4th December 2019, 14:02KlausST replied to a thread In accuracy in AC Voltage measurement in Elementary Electronic QuestionsHi, Again: Precision or accuracy? Again: there is no general answer, because we donīt know your exact waveform, whether there is (variable)...13 replies | 438 view(s)
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4th December 2019, 11:20KlausST replied to a thread Charging Voltage for a 1.2V NiMH Battery in Hobby Circuits and Small Projects ProblemsHi, There are many informations in the internet. Just do a search on your own. Wikipedia, every NiMH battery manufacturer, every charger...11 replies | 388 view(s)
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4th December 2019, 08:43KlausST replied to a thread In accuracy in AC Voltage measurement in Elementary Electronic QuestionsHi, I assume what you want to ask about is precision, not accuracy. My answer is: No. Not because the ferrite bead, the 1k, or the BAT54....13 replies | 438 view(s)
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4th December 2019, 07:34Hi, EPM7128 is no FPGA, it is a CPLD A simple internet search shows that Mouser has some on stock. Klaus5 replies | 239 view(s)
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4th December 2019, 07:21KlausST replied to a thread In accuracy in AC Voltage measurement in Elementary Electronic QuestionsHi, * I gave the leakage current at 50°C * You worry that you use it not only at room temperature. This is somehow useless information. What...13 replies | 438 view(s)
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3rd December 2019, 18:35KlausST replied to a thread LM5642 buck converter not work in Hobby Circuits and Small Projects ProblemsHi, so you used the eval-board? and you modified it? Why not step by step modify it back until it works again? Klaus7 replies | 371 view(s)
About KlausST
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