KlausST
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Yesterday, 16:05KlausST replied to a thread Metastabilty and data loss in ASIC Design Methodologies and Tools (Digital)Hi, Metastability is caused by violating setup and hold timing. On may avoid it by using a synchronized signal. This may be impossible. Then...11 replies | 318 view(s) -
Yesterday, 15:46KlausST replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects ProblemsHi, All we can do is guess. If you want a reliable answer then buy a resistor from a reliable source with detailed informations like...33 replies | 1213 view(s)
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Yesterday, 15:22KlausST replied to a thread Distance between MCU-Phy-Magnetics-RJ45 in PCB Routing Schematic Layout software and SimulationHi, so the paper already gives the answer to the question: Itīs to reduce EMI. Now I donīt have the HF knowledge to verify this statement. So...7 replies | 297 view(s)
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Yesterday, 15:13KlausST replied to a thread Metastabilty and data loss in ASIC Design Methodologies and Tools (Digital)Hi, No, metastability = X = undefined But a synchronizer output should be considered as a defied logic level. Afaik a sysnchronizer can...11 replies | 318 view(s)
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Yesterday, 15:04Hi, I'd go for * either 12V system * or 24V system. don`t go the mixed way. I tend to a 24V system because of the lower currents = lower...10 replies | 201 view(s)
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Yesterday, 15:00KlausST replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects ProblemsHi, The bigger noise compared to metal film resistors here is of no interest. Any other noise around this resistor is magnitudes higher. But...33 replies | 1213 view(s)
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Yesterday, 14:03Hi, Theretically infinite. * each one needs a unique /CS signal * you need to consider bus capacitance and dtive strength of each device....or...3 replies | 139 view(s)
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Yesterday, 13:59Hi, Most probably the high side driver does not work as expected .... because it can only work with duty cycle less than 100%, because of it's...10 replies | 201 view(s)
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Yesterday, 11:17KlausST replied to a thread Metastabilty and data loss in ASIC Design Methodologies and Tools (Digital)Hi, X means the state is undefined = unknown. So if you send a "1" .... and you can't be sure the output is "1", then the output hast to be...11 replies | 318 view(s)
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Yesterday, 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...10 replies | 201 view(s)
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Yesterday, 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 | 127 view(s)
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Yesterday, 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 | 312 view(s)
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7th December 2019, 21:50Hi, This is not a serious question, is it? Electronics without power does not work. In doubt consult the datasheet. Klaus6 replies | 312 view(s)
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7th December 2019, 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...33 replies | 1213 view(s)
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7th December 2019, 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 | 286 view(s)
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7th December 2019, 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 | 286 view(s)
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7th December 2019, 12:13Hi, secret circuits secret values secret informations ... We want to help, but how do you think we can help this way? Klaus18 replies | 404 view(s)
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7th December 2019, 08:39Hi, Before you design .... you should do some considerations and calculations. What are your expected R and C values? What's the input...18 replies | 404 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 | 185 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 | 213 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 | 185 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 | 208 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 | 394 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 | 394 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 | 403 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 | 292 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 | 292 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 | 302 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 | 262 view(s)
About KlausST
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