KlausST
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Yesterday, 23:44Hi, I assume you did not use all 4 opamps ... and you left some (unused) inputs floating. A no-go. Besides this I don't think a breadboard is...11 replies | 220 view(s) -
Yesterday, 18:52Hi, * Do you have a solid GND plane for reliable GND? * are there ceramics capacitors at each ICīs supply pin with low impedance connection to...11 replies | 220 view(s)
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Yesterday, 14:32Hi, what about a truth table? What switches, what LEDs, what supply, voltages and currents.... Klaus4 replies | 129 view(s)
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Yesterday, 08:58Hi, The highlighted green pieces of signals show that you donīt use EAGLE correctly. --> use the EAGLE tutorial how to connect, route and name...8 replies | 123 view(s)
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Yesterday, 08:52KlausST replied to a thread Reducing quantization noise in ADC with oversampling in Analog Circuit DesignHi, this only works when the converted samples have different values. If the signal is stable and free of noise and you get always the same...2 replies | 131 view(s)
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14th January 2019, 18:04KlausST replied to a thread Why do semiconductor companies not provide their datasheets publicly? in Elementary Electronic QuestionsHi, I never had a problem with a company and the NDA even for very low volume (1...50 pcs) industrial development. Klaus14 replies | 368 view(s)
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14th January 2019, 18:01KlausST replied to a thread [SOLVED] connecting Single output to multiple output in MicrocontrollersHi, additionally you need to consider wiring capacitance. Wire length plays a role when considering reflections. It makes a difference if the...4 replies | 164 view(s)
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13th January 2019, 18:11KlausST replied to a thread How create negative voltage -700mV - -1000mV 30mA? in Analog Circuit DesignHi, So output voltage depends on a lot of parameters... The whole thing is a voltage inverter with series resistance. Klaus13 replies | 450 view(s)
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13th January 2019, 16:31KlausST replied to a thread LED light power supply fix recommendations in Service Manuals, Requests, Repair TipsHi, Sounds good. Then every 350mA CC LED supply should work. Klaus6 replies | 236 view(s)
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13th January 2019, 13:52KlausST replied to a thread Common mode noise and earth connections in offline SMPS in Power ElectronicsHi, Is it? A common mode choke should work. Or a ferrite ring around the supply wires... You talk about common mode noise current. ...4 replies | 175 view(s)
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13th January 2019, 13:21KlausST replied to a thread LED light power supply fix recommendations in Service Manuals, Requests, Repair TipsHi, Just find out V and I of your LED. A measurement at full brightness (if adjustable) will do also. Klaus6 replies | 236 view(s)
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13th January 2019, 12:13KlausST replied to a thread LED light power supply fix recommendations in Service Manuals, Requests, Repair TipsHi, The power supply seems to have two operating modes: * current limiting to 350mA, for LEDs with Vf <= 10V * or voltage limiting to 12V for...6 replies | 236 view(s)
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13th January 2019, 10:56KlausST replied to a thread Voltage dimensioning MOSFET in Synchronous Buck ? in Analog Circuit DesignHi, The better the layout, the less is stray inductance --> the less overshot. Thus you need less headroom. The slower the voltage rise and fall...6 replies | 160 view(s)
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13th January 2019, 10:47Hi, I agree. A bit more detailed description is needed. I see you are no friend of GND (symbols). Please use them. It helps to avoid...17 replies | 409 view(s)
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13th January 2019, 02:03KlausST replied to a thread computing rated current for inductors in Elementary Electronic QuestionsHi, What is going on here. I could not open the pdf of post #1 (I always recommend to use the PDFs directly from the manufacturer, they are most...8 replies | 229 view(s)
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13th January 2019, 01:41Hi, I'm not familiar with PIC, But "CCP1" sounds like a capture input. When using capture feature you need to setup the capture periferal. I...10 replies | 297 view(s)
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13th January 2019, 01:34KlausST replied to a thread How create negative voltage -700mV - -1000mV 30mA? in Analog Circuit DesignHi, This sounds as if one could control the output voltage by modifying the capacitor value. Where in the ICL7660 did you read this statement?...13 replies | 450 view(s)
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11th January 2019, 23:10Hi, Out of curiosity I had a look into the datasheet. 25mA is not an "operational" current. It is the absolute maximum, the edge to get killed....18 replies | 698 view(s)
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11th January 2019, 17:11KlausST replied to a thread Short circuit protection in PCB design in Hobby Circuits and Small Projects ProblemsHi, How can we know? Did you give your requirements/specifications? We donīt know nothing about your application. Klaus11 replies | 777 view(s)
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11th January 2019, 15:57KlausST replied to a thread Current sampling of dc motor for closed loop control. in Power ElectronicsHi, I_peak is already explained I_avg tells you about the motor torque I_RMS is good if you want to calculate winding loss. (heating) Klaus4 replies | 176 view(s)
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11th January 2019, 11:05KlausST replied to a thread Working of AD8367 evaluation Board in RF, Microwave, Antennas and OpticsHi, you urgently need to read the datasheet. VGA_Mode: MODE pin (controlled by SW-2) = VP = 5V DETO pin (controlled by SW-1) = V_Gain = 50mV...2 replies | 233 view(s)
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11th January 2019, 09:05KlausST replied to a thread How create negative voltage -700mV - -1000mV 30mA? in Analog Circuit DesignHi, Neither do I. Thus one of us or you should use the selection tools provided by the manufacturers. I recommend you do this on your...13 replies | 450 view(s)
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11th January 2019, 08:49Hi, You could simply use Excel to simulate this. Let's imagine a sine waveform input. Now if you use V_out = A Ũ log(V_in) You will see that...5 replies | 238 view(s)
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11th January 2019, 08:09Hi, For audio one uses linear voltage dividers (resistive voltage divider). If you use something non-linear like logarithmic you get lots of...5 replies | 238 view(s)
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11th January 2019, 01:32KlausST replied to a thread How create negative voltage -700mV - -1000mV 30mA? in Analog Circuit DesignHi, What about a SC voltage inverter plus a negative voltage regulator? Maybe there are even combined ICs. Did you use selection tools...13 replies | 450 view(s)
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11th January 2019, 01:26Hi, INA168 has specified typical offset voltage of +/- 0.2mV, even if +/-2mV is specifed for extreme temperatures I expect the real values close...6 replies | 185 view(s)
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10th January 2019, 21:21Hi, To be true, I don't know the answer. If I want to find the answer I need the circuit and the voltages and currents. And I need to read the...18 replies | 698 view(s)
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10th January 2019, 19:51David_ started a thread Using PLL(CD4046) to generate a 90° shifted signal, how to manage 10Hz - 1MHz? in Analog Circuit DesignHello. A couple of years ago or something I was getting advice here on EdaBoard about how to design a dual-channel Lock-In Amplifier(LIA) with the...3 replies | 175 view(s)
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10th January 2019, 12:07Hi, I assume almost every application note, tutorial, description about matrix AC/AC converters will answer your questions. Thus I recommend...1 replies | 102 view(s)
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10th January 2019, 11:57Hi, AC voltage control by PWM? Are you sure? Show your circuit. Klaus10 replies | 297 view(s)
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