KlausST
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Yesterday, 21:59Hi, Especially for PID controllers, how to design them, how to tune them...there are countless design notes, application notes, discussions, even...3 replies | 162 view(s) -
Yesterday, 07:29KlausST replied to a thread Please help power supply dead 110V to 24vdc 5vdc in Service Manuals, Requests, Repair TipsHi, Seems to be something basic. Maybe FS1 is a fuse and is blown ... Unpower your circuit and check continuity of FS1. Klaus6 replies | 155 view(s)
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Yesterday, 02:30Hi, No. It has nothing to do with antenna material. At least it should not... Klaus6 replies | 139 view(s)
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Yesterday, 01:48Hi, 50 Ohms is the characteristic impedance, you can not measure with an Ohmmeter. The load impedance does not belong to the antenna. It is for...6 replies | 139 view(s)
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Yesterday, 01:13Hi, I assume there are so much parameters. (PCB material, thickness, copper thickness, layer stacking, layer count, air flow...) ..it's hard to...1 replies | 65 view(s)
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20th February 2020, 07:43KlausST replied to a thread Question of the circuit to transmit external signal to a smartphone app in IoT - Internet of ThingsHi, The linked site tells you everything you need to know. What additional information do you need? Klaus4 replies | 493 view(s)
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20th February 2020, 07:38Hi, Every Opamp manufacturer provides such documents. Start with the datasheet of the selected Opamp. Go to the manufacturer of the Opamp.. to...68 replies | 1627 view(s)
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19th February 2020, 23:42Hi, It depends on a lot of things. Power supply, power requirements, noise expectations, the chosen Opamp.... Often the datasheet and...68 replies | 1627 view(s)
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19th February 2020, 17:24Hi, Yes, with tye suitable combination of Opamp and buffer. But I call it stupid ... to add a buffer instead of using meaningful resistor...68 replies | 1627 view(s)
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18th February 2020, 22:26Hi, In a forum ... you should show what you have done... and how you tested it, what you expected and what you see instead Klaus2 replies | 179 view(s)
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18th February 2020, 03:49KlausST replied to a thread Different current measurmen numbers on a FLUKE 289 in Elementary Electronic QuestionsHi, Last page of the datasheet tells the burden resistances in current measurement mode. It is 102 Ohms vs 1.8 Ohms ... does not explain your...4 replies | 262 view(s)
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18th February 2020, 03:35Hi, This is your mistake. On a dual supply Opamp none of the supply rails is GND.... (with standard node naming) Klaus68 replies | 1627 view(s)
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18th February 2020, 03:27Hi, I'm no HF specialist, but afaik Fspacing depends on the input (data) frequency. Klaus12 replies | 303 view(s)
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18th February 2020, 03:24KlausST replied to a thread Different current measurmen numbers on a FLUKE 289 in Elementary Electronic QuestionsHi, What's the resistor value? Show a photo how you connected it. AC or DC? If AC: is the Voltmeter trueRMS or not? What waveform? 970 ohms...4 replies | 262 view(s)
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18th February 2020, 03:16KlausST replied to a thread [SOLVED] Ultra low-power timer to make a power saving circuit in Analog Circuit DesignHi, As far as I know .. every microcontroller acts this way. Idle state does not mean power off .... Klaus23 replies | 644 view(s)
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18th February 2020, 03:07Hi, No. A dual power supply has three connections (at least). +voltage, GND (or 0V), -voltage. GND is the reference to each of the dual...68 replies | 1627 view(s)
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18th February 2020, 02:58KlausST replied to a thread [SOLVED] Ultra low-power timer to make a power saving circuit in Analog Circuit DesignHi, You don't need a DFF. The MCU will keep it's I/O as you program it ... even in sleep mode. Klaus23 replies | 644 view(s)
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17th February 2020, 18:51KlausST replied to a thread 14 bit adc output to 5 bit data conversion in VHDL in PLD, SPLD, GAL, CPLD, FPGA DesignHi, Maybe I misunderstand.. But if you want to generate 5 (linear. Not logarithmic like u-law, A-law) bits from a 14 bit ADC ... then just use...3 replies | 339 view(s)
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17th February 2020, 06:51KlausST replied to a thread Measure inl of an ADC in cadence in Analog Integrated Circuit (IC) Design, Layout and FabricationHi, This topic is not new, thus do an internet search "INL measurement ADC" to find documents. I see documents from adc manufacturers, but I...4 replies | 246 view(s)
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17th February 2020, 06:43Hi, I see no reason, why the zener can't be external. I don't think EM (HF) is a problem, I rather think it's overvoltage, overcurrent or...3 replies | 255 view(s)
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17th February 2020, 06:37KlausST replied to a thread Phase detector with synchronous logic (FPGA) in RF, Microwave, Antennas and OpticsHi, DFT or correlation comes into my mind. Not that difficult math..but good precision, even for noisy signals. Klaus13 replies | 569 view(s)
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17th February 2020, 00:21KlausST replied to a thread [SOLVED] Ultra low-power timer to make a power saving circuit in Analog Circuit DesignHi, Why do you ask? Page 159 specifies supply voltage range....and it starts at 3V. But if you want lower supply voltage, then just choose...23 replies | 644 view(s)
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16th February 2020, 22:51Hi, A fully agree with FvM. The first results of a simple internet search "simm sdram specification" leads you the big manufacturers... and...4 replies | 322 view(s)
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16th February 2020, 21:23Hi. Why don't you draw the dual supply? ... when you want to discuss about... Klaus68 replies | 1627 view(s)
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16th February 2020, 21:14Hi, If you are the designer, the you should give specifications. Otherwise we could guess a hundred posts.... Klaus4 replies | 322 view(s)
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16th February 2020, 20:01Hi, There is no answer, because there is a lack of information. * what do you define as 0V_node? * where is +IN connected. --> draw a...68 replies | 1627 view(s)
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16th February 2020, 18:30KlausST replied to a thread [SOLVED] Ultra low-power timer to make a power saving circuit in Analog Circuit DesignHi, In post#10 you have chosen Atmega48. --> Thus in post#11 I referred exactly to Atmega48 datasheet. Now you choose another AVR ... and...23 replies | 644 view(s)
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16th February 2020, 12:17KlausST replied to a thread [SOLVED] Ultra low-power timer to make a power saving circuit in Analog Circuit DesignHi, I recommended * 32kHz --> 25uA @ 3V active * most of the time idle --> 15uA @ 3V For sure, if you don't follow my recommendation,...23 replies | 644 view(s)
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16th February 2020, 10:37KlausST replied to a thread [SOLVED] Ultra low-power timer to make a power saving circuit in Analog Circuit DesignHi, Not clear how you come to 12uA... There are low power microcontrollers. Like AVR picopower, maybe other brands draw even less power. When...23 replies | 644 view(s)
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16th February 2020, 03:25Hi, Just to clarify: When you violate absolute maximum ratings, then immediately permanent damage may occur. When you want to look for...68 replies | 1627 view(s)
About KlausST
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21st February 2020
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