KlausST
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Today, 17:08KlausST replied to a thread Problem with UART clock value in a VHDL sample code in PLD, SPLD, GAL, CPLD, FPGA DesignHi, True ... I didn't re calculate it. Klaus6 replies | 82 view(s) -
Today, 17:03Hi, Integrating the voltages, as well as integrating the absolute_value_of_voltage can never lead to RMS. --> For RMS you need to integrate...19 replies | 293 view(s)
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Today, 12:52Hi, True RMS means there is a "true" RMS measurement and calculation...with squaring the signal, averaging and taking the square root. In...19 replies | 293 view(s)
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Today, 12:36KlausST replied to a thread Problem with UART clock value in a VHDL sample code in PLD, SPLD, GAL, CPLD, FPGA DesignHi, 40040ns is about 40us. There is just 0.1% difference. Thus it's well within UART frequency tolerance. On the other side...with a 50MHz...6 replies | 82 view(s)
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Today, 12:32Hi, Sorry, I was confused. I misinterpreted "soft start PWM" with "soft-PWM". Reviewing your code it seems you already use hardware PWM. ...12 replies | 175 view(s)
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Today, 11:25Hi, May I ask why don't you use hardware PWM? It does not need processing power ... just the setup. Klaus12 replies | 175 view(s)
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Today, 08:09KlausST replied to a thread Best position for trimpots in adjustable regulator or reference feedback paths in Elementary Electronic QuestionsHi, There is no "best" solution.... because it depends. If the pot is in the upper path you get a linear resistance_to_outputvoltage behaviour...5 replies | 97 view(s)
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Yesterday, 22:33Hi, CAT5 / CAT6 calls for RS485/RS422. And I assume you have free pairs for power supply... So you can make an active differential interface. ...4 replies | 92 view(s)
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Yesterday, 12:13KlausST replied to a thread [SOLVED] division of two values with op amps in Elementary Electronic QuestionsHi, I mean: analog math is outdated for most applications. Klaus12 replies | 344 view(s)
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Yesterday, 08:08KlausST replied to a thread Differential pressure sensor in Hobby Circuits and Small Projects ProblemsHi, I don't think this is compareable to the static air flow problem. If this acts like a high pass filter ... then it should block low...5 replies | 221 view(s)
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Yesterday, 07:14KlausST replied to a thread why does output of 74LCX573 go high during powerup in Elementary Electronic QuestionsHi, Your schematic shows unconnected input pins. General recommendation: Don't leave (unused) input pins floating. Neither digital one nor analog...5 replies | 156 view(s)
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Yesterday, 06:49KlausST replied to a thread Differential pressure sensor in Hobby Circuits and Small Projects ProblemsHi, I don't agree. A pressure drop will be generated only if there is a (continous) air flow through the filter. No air flow, no pressure drop....5 replies | 221 view(s)
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Yesterday, 06:41KlausST replied to a thread [SOLVED] division of two values with op amps in Elementary Electronic QuestionsHi, I know some regulation circuits from the 1970ies with analog math... Nowadays I'd use a digital soluton. What's your idea behind using...12 replies | 344 view(s)
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24th May 2019, 15:59Hi, please read forum rules. A forum is not meant that other write code for you or do an internet search for you. A forum is meant that...2 replies | 132 view(s)
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24th May 2019, 15:55Hi, 0.7 --> more exactly 0.707... = 1/sqrt(2) or 0.5 x sqrt(2) (only for pure sinewave). It does not depend on frequency. It just depends...19 replies | 293 view(s)
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24th May 2019, 12:08KlausST replied to a thread why does output of 74LCX573 go high during powerup in Elementary Electronic QuestionsHi, Show your schematic. *** The "latched state" at power up is not defined in the datsheet. And most probably you left the signals floating...5 replies | 156 view(s)
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24th May 2019, 09:00KlausST replied to a thread Probing with oscilloscope causes current drop in Analog Integrated Circuit (IC) Design, Layout and FabricationHi, We donīt see in the picture where you connect the scope. Also we donīt see what frequencies and what node impedances we have to expect. ...2 replies | 126 view(s)
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24th May 2019, 08:55KlausST replied to a thread What will happen if battery cell draws more current than rated in Analog Circuit DesignHi, Iīd say "20min" can be seen as "continous", thus itīs beyond specifications. Detailed answer should give the datasheet .. if you donīt...4 replies | 232 view(s)
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24th May 2019, 08:41KlausST replied to a thread Sainsmart 3.2 inch TFT Touchscreen interface with Arduino in MicrocontrollersHi, If Iīd need to know that ... Iīd read the datasheets. Pin compatibilty is easy to verify. Interface and protocol is more complex, but...27 replies | 1946 view(s)
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24th May 2019, 06:23Hi, I'd work with interrupts. RTOS takes more processing power overhead. (But your tasks don't seem to take much processing power, thus you are...2 replies | 130 view(s)
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24th May 2019, 05:55KlausST replied to a thread [SOLVED] Solder dots on PCB traces in Hobby Circuits and Small Projects ProblemsHi, I'm with Easy peasy: Test points. And I assume this is no multilayer..I rather assume this is a cheap single side PCB. Klaus7 replies | 301 view(s)
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23rd May 2019, 10:21Hi, I wonder who designed the "Recommended Circuit Diagram" of the application note. In my eyes a "constant current circuit" should provide...12 replies | 782 view(s)
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23rd May 2019, 09:03Hi, you missed to add the 40k resistor between R5 and R6.. Klaus14 replies | 782 view(s)
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23rd May 2019, 07:04Hi, Why do you use software UART instead of hardware UART? Klaus16 replies | 326 view(s)
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23rd May 2019, 07:01KlausST replied to a thread H brigde for control speed and direction 180VDC brushed motor in Elementary Electronic QuestionsHi, C6, C9, C11, C12. Ceramics: use standard value 100nF (up to 1uF) Electrolytics: there are many tutirials how to calculate them, even online...14 replies | 1695 view(s)
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22nd May 2019, 23:19Hi, Tx of PIC is an output. But it is connected to RxOut, which is an output, too. And Rx is an input ... and is connected to another input. ...16 replies | 326 view(s)
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22nd May 2019, 22:55KlausST replied to a thread H brigde for control speed and direction 180VDC brushed motor in Elementary Electronic QuestionsHi, To your schematic: * use GND symbols, they improve readability. And they are for free. ;-) * you need a bulk capacitor and a ceramics...14 replies | 1695 view(s)
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22nd May 2019, 08:04Hi, If global VCC is the ADC VRef, then the overall performance is limited. Thus the whole design may be relaxed regarding precision. Klaus7 replies | 158 view(s)
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22nd May 2019, 08:02KlausST replied to a thread Electrolytic capacitor rms and peak current in Elementary Electronic QuestionsHi, If there is an additional current limit, then I'd expect it to be specified in the datasheet. Klaus8 replies | 567 view(s)
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22nd May 2019, 07:13KlausST replied to a thread Electrolytic capacitor rms and peak current in Elementary Electronic QuestionsHi, We talk about "current", thus your statement is wrong. For sure every capacitor can work with AC current. For voltage: Electrolytics...8 replies | 567 view(s)
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