KlausST
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Yesterday, 22:00Hi, Yes you miss the characteristic impedance. You just need to drive the 75 Ohms of the cable impedance, that's it. This already includes the...3 replies | 89 view(s) -
Yesterday, 16:12Hi, No! Repeated: Klaus8 replies | 258 view(s)
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Yesterday, 16:07Hi you missed the brackets: ((5V7-V_in-v_d1)*R2/(R1+R2))/R2 then you may simplify it: --> ((5V7-V_in-v_d1)*R2/(R1+R2))/R2 -->...4 replies | 152 view(s)
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Yesterday, 15:38Hi, We are talking about HF. Thus this still is far away from being a GND plane. All the traces have the same length as before ... and for HF...8 replies | 258 view(s)
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Yesterday, 15:20Hi, hard to say without values. I guess 300 uA. No - joke aside. do you really want us to go give you a mathematical solution for all cases...4 replies | 152 view(s)
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Yesterday, 12:34Hi, It does not depend on whether your circuit produces HF or not, it depends whether your circuit reacts on HF. And this depends on what exactly...8 replies | 258 view(s)
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Yesterday, 12:23Hi, we have more modern ones like JBC for example, but I can see no benefit against the "old ones". They claim about longer tip liefetime - but...7 replies | 277 view(s)
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Yesterday, 12:06Hi, according ohm´s law. 5V input will give 50uA, this is half of 100uA. So this should be linear. Nobody can tell whether your meter works...6 replies | 143 view(s)
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Yesterday, 10:24Hi, In our company we design multilayer PCB, do prototype soldering, rework, repair, low volume production. In our whole company we only have...7 replies | 277 view(s)
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Yesterday, 09:29KlausST replied to a thread PROCESSOR IS REBOOTING when hotplugging usb console to processor's Board through UART in Professional Hardware and Electronics DesignHi, I didn't talk about "onboard" either... Before you just talked about a laptop and FTDI....but now I have to assume it's not the laptop...4 replies | 150 view(s)
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Yesterday, 08:32KlausST replied to a thread PROCESSOR IS REBOOTING when hotplugging usb console to processor's Board through UART in Professional Hardware and Electronics DesignHi, You talk about RS232 signal lines. But I think the signal lines do not cause the problem. I'm even not sure if it's a hardware problem at...4 replies | 150 view(s)
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Yesterday, 08:19Hi, There are still a lot if issues..already discussed. A new one is Q5. What does it do? It disconnects GND to U1 in a live system. GND is...23 replies | 786 view(s)
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Yesterday, 01:14Hi, Do the timings really make sense? * discharging C_Hold typicaly takes a microsecond or so, discharging it for 250us won't do anything.. *...3 replies | 193 view(s)
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12th December 2019, 18:42Hi, A2 has a defined gain of -1, thus it should work. A1 has an input impedance of 1600 Ohms @ 1kHz (C7). This causes a gain of -32 @ 1kHz. But...7 replies | 261 view(s)
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12th December 2019, 16:22Hi, I think the circuit could work. But why do you use a pulse input ... of that high magnitude.? --> Use a sine shape waveform of 1kHz and...7 replies | 261 view(s)
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12th December 2019, 08:49Hi, Why not simply switching low side = GND of the peltier? Why not using a dedicated Highside_switch? Why not using standard P_channel circuits...23 replies | 786 view(s)
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12th December 2019, 08:44KlausST replied to a thread Supercap charging using load switch and current limit resistor in Analog Circuit DesignHi, Yes. Turn ON starts at about 1.8V, but one can not see this, becayse the signal is chip internal. But after the turn ON delay you see the...1 replies | 87 view(s)
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12th December 2019, 00:11Hi, "keyboard" has many meanings. Please clarify which one you mean. And describe the expected function. Example: computer keyboard. Do you...2 replies | 216 view(s)
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11th December 2019, 23:54KlausST replied to a thread How to access Micron MT25Q nor flash in Embedded Linux and Real-Time Operating Systems (RTOS)Hi, A lot of text, no clear question, not much we can verify... Please give * (a link to) the datasheet * your code * the scope picture *...4 replies | 303 view(s)
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11th December 2019, 11:22Hi, Do you think you find a single person in this forum who does not think reading documents is boring? There´s no way around. Klaus8 replies | 472 view(s)
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11th December 2019, 11:15Hi Then you don´t need to accumulate something, you just need to measure the phase difference. If phase difference is 5us --> show 5us (= "1"...12 replies | 422 view(s)
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11th December 2019, 09:18Hi, What about a sketch and/or timing diagram? "Phase should be accumulated", means:at the beginning, if phase is 5us then the result is "5us"...12 replies | 422 view(s)
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11th December 2019, 09:03Hi, I'm still not sure whether you want a digital system or an analog system. XOR --> low_pass_filter --> analog value You may use an...12 replies | 422 view(s)
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11th December 2019, 08:52KlausST replied to a thread MOC3020/BTA41 circuit problem in Hobby Circuits and Small Projects ProblemsHi, In the link they talk about a three phase system, where the load connection is delta wired. So do you have a three phase system? And is...10 replies | 418 view(s)
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11th December 2019, 07:39Hi, If you want to regulate the power of a peltier you need to control the voltage...somehow You can't keep voltage at constant 15.0V. Again...23 replies | 786 view(s)
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11th December 2019, 07:26Hi, The obvious thing is to use a "phase comparator circuit". But most probably you already tried/simulated this and failed .... otherwise you...12 replies | 422 view(s)
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10th December 2019, 08:40Hi, There's nothing wrong with it. No. This is a more complicated way to check if it operates....but it's no way to check accuracy, because...8 replies | 472 view(s)
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10th December 2019, 07:59Hi, VDD voltage is explained in the datasheet. Where to get it from? Somewhere from you application. But we don't know this. Usually the same...12 replies | 714 view(s)
About KlausST
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14th December 2019
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