KlausST
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Today, 08:39Hi, Before you design .... you should do some considerations and calculations. What are your expected R and C values? What's the input...5 replies | 11 view(s) -
Yesterday, 15:03Hi, to adjust to DAC digital input range --> and thus itīs analog output range to full scale... Klaus4 replies | 135 view(s)
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Yesterday, 14:19Hi, "100uF" does sound like an electrolytic capacitor. These are not suitable for fast spikes. They are for low frequencies only. --> use a...2 replies | 105 view(s)
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Yesterday, 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 | 135 view(s)
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Yesterday, 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 | 172 view(s)
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Yesterday, 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 | 349 view(s)
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Yesterday, 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 | 349 view(s)
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Yesterday, 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 | 315 view(s)
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Yesterday, 01:12Hi, It's not fair that you should build a prototype without knowing full specifications. Try to get full requirements first. Klaus5 replies | 203 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...5 replies | 203 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 | 283 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 | 242 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 | 315 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 | 242 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 | 425 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 | 315 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 | 425 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 | 228 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 | 425 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 | 361 view(s)
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3rd December 2019, 16:02Hi, There are many discussions, tutorials and solutions in the internet. Even videos. Please go through some of them first. If there still...1 replies | 156 view(s)
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3rd December 2019, 15:51KlausST replied to a thread When ad7321 collects voltage, a spike voltage appears in Analog Integrated Circuit (IC) Design, Layout and FabricationHi, please use the link to the manufacturer internet site. There you get the latest and most reliable informations. Spike: This is caused by...2 replies | 130 view(s)
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3rd December 2019, 15:45KlausST replied to a thread In accuracy in AC Voltage measurement in Elementary Electronic QuestionsHi, ST BAT54S datasheet says: * typ: 0.05uA @ 5V and 25°C. * typ: 0.45uA @ 5V and 50°C. I assume this error may be a factor of 1000 better...13 replies | 425 view(s)
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3rd December 2019, 14:02KlausST replied to a thread [SOLVED] PWM applied to load while current limiting on load simultaneously in Analog Circuit DesignHi, I donīt see how "car battery failure" comes into play now... If possible, try to fix one problem first, then the next. Klaus20 replies | 634 view(s)
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3rd December 2019, 13:58Hi, I think there is a big difference whether you do 8x8 bit integer multiplication or 32bit x 32bit floating point multiplication. One is the...13 replies | 533 view(s)
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3rd December 2019, 13:39KlausST replied to a thread In accuracy in AC Voltage measurement in Elementary Electronic QuestionsHi, there are many discussions, documents and even videos about overvoltage protection with clamping diodes. I assume millions. Just do a search....13 replies | 425 view(s)
About KlausST
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