KlausST
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Today, 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...3 replies | 70 view(s) -
Today, 03:35Hi, This is your mistake. On a dual supply Opamp none of the supply rails is GND.... (with standard node naming) Klaus56 replies | 1219 view(s)
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Today, 03:27Hi, I'm no HF specialist, but afaik Fspacing depends on the input (data) frequency. Klaus6 replies | 113 view(s)
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Today, 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...3 replies | 70 view(s)
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Today, 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 | 521 view(s)
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Today, 03:07Hi, No. A dual power supply has three connections (at least). +voltage, GND (or 0V), - supply. GND is the reference to each of the dual...56 replies | 1219 view(s)
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Today, 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 | 521 view(s)
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Yesterday, 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 | 253 view(s)
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Yesterday, 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 | 176 view(s)
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Yesterday, 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...2 replies | 187 view(s)
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Yesterday, 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. Klaus6 replies | 253 view(s)
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Yesterday, 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 | 521 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 | 264 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... Klaus56 replies | 1219 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 | 264 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...56 replies | 1219 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 | 521 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 | 521 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 | 521 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...56 replies | 1219 view(s)
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16th February 2020, 02:11KlausST replied to a thread [SOLVED] Ultra low-power timer to make a power saving circuit in Analog Circuit DesignHi, 20uA for a CMOS devuce is pretty high. But it's not the typical current, but the maximum current. Nexperia 74LVC163 datasheet says 0.1uA...23 replies | 521 view(s)
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15th February 2020, 22:04KlausST replied to a thread Glow LED on specified counter values 0-500 in 89c52 uC in MicrocontrollersHi, Is the same as if ( (Counter % 15) == 10) LED1 = 1; Klaus30 replies | 887 view(s)
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15th February 2020, 21:58Hi, A question.... * Do you want to write code on your own? --> then start with an idea, a piece of paper, a pencil, a flow chart.... * Or do...2 replies | 183 view(s)
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15th February 2020, 21:38KlausST replied to a thread [SOLVED] Ultra low-power timer to make a power saving circuit in Analog Circuit DesignHi, Definitions of "Precision" and "duty cycle" can be found in the internet. A "signal" should be defined somehow... (I assume it's a digital...23 replies | 521 view(s)
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15th February 2020, 21:02KlausST replied to a thread Glow LED on specified counter values 0-500 in 89c52 uC in MicrocontrollersHi, (Counter - 10) % 10) is the same as (Counter % 10) (Counter - 15) % 15) is the same as (Counter % 15) Klaus30 replies | 887 view(s)
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15th February 2020, 18:24KlausST replied to a thread [SOLVED] Ultra low-power timer to make a power saving circuit in Analog Circuit DesignHi, Give specifications, like * expected current consumption ... but please not "as low as possible" * precision, * duty cyle, or how the...23 replies | 521 view(s)
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15th February 2020, 11:14KlausST replied to a thread Basic 12v Battery VOLTAGE METER, more resolution needed in Elementary Electronic QuestionsHi, And this I think exactly is the point "why". If the voltage drop (and power dissipation) is not done externally, then all the (same)...20 replies | 1368 view(s)
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15th February 2020, 11:08Hi, I agree. Then I'm unusual, too ;-) Studying the function, doing maths, deciding specifications, reading, reading again, doing (hand...56 replies | 1219 view(s)
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15th February 2020, 09:07KlausST replied to a thread Glow LED on specified counter values 0-500 in 89c52 uC in MicrocontrollersHi, As "counter" is used both in main and isr, it should be declared "volatile". If "counter" needs multiple access to be processed (i.e. 16...30 replies | 887 view(s)
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15th February 2020, 08:50KlausST replied to a thread Basic 12v Battery VOLTAGE METER, more resolution needed in Elementary Electronic QuestionsHi, And sometimes it's useful to take a photo from the component's side, then mirror it on the PC and print it out. This way you see the...20 replies | 1368 view(s)
About KlausST
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