KlausST
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Today, 13:38KlausST replied to a thread [SOLVED] Determining Switch Current in RF, Microwave, Antennas and OpticsHi, square wave.... I assumed something like this. now letīs do some example: letīs say 100Hz, 50% duty cycle (5ms OFF, 5ms ON),rise rate:...8 replies | 87 view(s) -
Today, 12:59KlausST replied to a thread [SOLVED] Determining Switch Current in RF, Microwave, Antennas and OpticsHi, Definitely yes, as already mentioned: Waveform, rise rate, voltage levels, timing Itīs totally different whether you want 100Hz *...8 replies | 87 view(s)
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Today, 12:10KlausST replied to a thread [SOLVED] Determining Switch Current in RF, Microwave, Antennas and OpticsHi, I miss the expected voltage waveform... with voltage levels and timing. Without this we can not estimate the current. Klaus8 replies | 87 view(s)
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Today, 12:08Hi, At this situation, what is: * V_IN, best to be mesured with a scope to see it moves How did you mesure it? A DVM is not useful,...3 replies | 55 view(s)
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Today, 11:11KlausST replied to a thread Can a gated input clock be a problem for a design? in PLD, SPLD, GAL, CPLD, FPGA DesignHi, confusing description. Is this true: ASIC as SPI master --> --> ICE40UP as SPI slave How do you detect the "stuck"?1 replies | 56 view(s)
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Today, 10:44Hi, A battery is far away from being a resistive load. Thus, maybe a "resistive" load is not suitable to test this circuit. You may try to...3 replies | 55 view(s)
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Today, 10:20KlausST replied to a thread [SOLVED] Determining Switch Current in RF, Microwave, Antennas and OpticsHi, I recommend to draw your circuit. Then add arrows that show the current you are talking about. Then draw a diagram with the expected...8 replies | 87 view(s)
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Today, 10:04KlausST replied to a thread Increasing oscillator output to almost rail to rail? in RF, Microwave, Antennas and OpticsHi, Do you mean "microcontroller"? --> They usually have built in oscillator circuit. * some have built in RC oscillators --> they donīt need...5 replies | 83 view(s)
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Today, 09:48KlausST replied to a thread Stepper motor doesn't have a brand or model number! in Elementary Electronic QuestionsHi, I canīt see that you are willing to provide useful informations. * post#7 shows a circuit diagram with a unipolar stepper motor --> free...18 replies | 464 view(s)
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Today, 07:47Hi, ... clearly refers to a file. I recommend to upload this file (or at least a useful part of the file)... Otherwise nobody knows what's...2 replies | 52 view(s)
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Today, 07:42KlausST replied to a thread Stepper motor doesn't have a brand or model number! in Elementary Electronic QuestionsHi, There are many diagrams. Not shure what you mean... --> freewheeling diodes usually don't work on stepper motor windings. If you think...18 replies | 464 view(s)
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Yesterday, 14:06KlausST replied to a thread How to measure current with a digital oscilloscope? in Power ElectronicsHi, Before you asked about current measurement .. now you talk about performance. Why now "performance" is important? And in which way? If...8 replies | 216 view(s)
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Yesterday, 13:47KlausST replied to a thread 8051 microcontroller ,lcd and 4 decimal digit increment in MicrocontrollersHi, Iīve merged your threads. Instead of starting a new thread you should try to give the requested informations. Donīt expect that others do...5 replies | 110 view(s)
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Yesterday, 10:30Hi, Whether the circuit is good or not depends on * the conection of the other motor pins * the internal motor wiring (center taped) * the...3 replies | 116 view(s)
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Yesterday, 09:19KlausST replied to a thread 8051 microcontroller ,lcd and 4 decimal digit increment in MicrocontrollersHi, We donīt know nothing.... * What have you done so far? * What are your ideas? * What is your knowledge level? * Draw and show the...5 replies | 110 view(s)
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Yesterday, 09:10Hi, Shouldn the max delay be only for a half cycle: 50Hz --> 10ms 60Hz --> 8.33ms Klaus22 replies | 1458 view(s)
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Yesterday, 07:43Hi, Why you have two 5V supplies? * "+5V" for the PIC * "+5V_l" for the LEDs How are they generated, how are the related to each other? -->...3 replies | 103 view(s)
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19th February 2019, 19:26KlausST replied to a thread Embedded project needs devices which can work continuously at +125 degree C in MicrocontrollersHi, No problem. Itīs just useless. Klaus72 replies | 1977 view(s)
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19th February 2019, 19:24KlausST replied to a thread How to measure current with a digital oscilloscope? in Power ElectronicsHi, How Iīd do it: Resistor I canīt see why you canīt use it. Tell us more about it. alternatively: use a current probe. Klaus8 replies | 216 view(s)
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19th February 2019, 18:26Hi, Please keep in mind: The generated heat will always be the same. LM317 with / wihtou pass transistor, or any resistor solution or any other...4 replies | 133 view(s)
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19th February 2019, 17:36Hi, I didnīt go through the complete thread. But it seems you are doing some frequency measurement. For this you use a "gate" time of 100us....18 replies | 370 view(s)
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19th February 2019, 17:24KlausST replied to a thread Embedded project needs devices which can work continuously at +125 degree C in MicrocontrollersHi, No, because the HC138 outputs are push/pull and never high-Z. Klaus72 replies | 1977 view(s)
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19th February 2019, 17:16Hi, Mind: itīs not (like expectable) "Max forward voltage vs forward current" it says: "max. forward current vs forward voltage". It is the...5 replies | 127 view(s)
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19th February 2019, 13:48KlausST replied to a thread Stepper motor doesn't have a brand or model number! in Elementary Electronic QuestionsHi, I canīt see how you want to connect it nor how it can work. Can you draw a schematic? Klaus18 replies | 464 view(s)
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19th February 2019, 13:45Hi, I assume you did not read the diodeīs datasheet. According your measurement you get 3V across 30 Ohms --> 0.1A. Now use Figure 7 of the...5 replies | 127 view(s)
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18th February 2019, 20:32David_ replied to a thread Simplest way of converting 240Vrms mains into 450VDC? in Power ElectronicsThis is for a single-phase motor(fan). I have been thinking about voltage doubler directly at the mains but I don't know math good enough to be...12 replies | 445 view(s)
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18th February 2019, 18:37Hi, Instead of "somewhere" I recommend to look for such informations at the OPAMP manufacturers. They write the specifications and they can tell...3 replies | 126 view(s)
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