KlausST
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Today, 12:13Hi, I mean: analog math is outdated for most applications. Klaus8 replies | 186 view(s) -
Today, 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 | 147 view(s)
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Today, 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 | 135 view(s)
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Today, 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 | 147 view(s)
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Today, 06:41Hi, I know some regulation circuits from the 1970ies with analog math... Nowadays I'd use a digital soluton. What's your idea behind using...8 replies | 186 view(s)
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Yesterday, 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 | 81 view(s)
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Yesterday, 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...5 replies | 162 view(s)
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Yesterday, 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 | 135 view(s)
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Yesterday, 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 | 111 view(s)
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Yesterday, 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...3 replies | 192 view(s)
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Yesterday, 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 | 1936 view(s)
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Yesterday, 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 | 102 view(s)
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Yesterday, 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 | 267 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 | 682 view(s)
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23rd May 2019, 09:03Hi, you missed to add the 40k resistor between R5 and R6.. Klaus13 replies | 732 view(s)
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23rd May 2019, 07:04Hi, Why do you use software UART instead of hardware UART? Klaus16 replies | 303 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 | 1690 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 | 303 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 | 1690 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. Klaus7 replies | 548 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...7 replies | 548 view(s)
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22nd May 2019, 06:59KlausST replied to a thread Electrolytic capacitor rms and peak current in Elementary Electronic QuestionsHi, It's the nature of AC, that the peak value is higher than the RMS value. Thus, the answer is: Yes. Klaus7 replies | 548 view(s)
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21st May 2019, 17:07Hi, There is a tutorial.. and you ask how to start. ...Maybe start telling us what you did so far and what results you get. Informations like...13 replies | 732 view(s)
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21st May 2019, 13:11Hi, If you want DC at the output, then you need the already recommended buffer and (I recommend a second order) low pass filter. Because you...16 replies | 2012 view(s)
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21st May 2019, 12:57Hi, Without requirements/ specification regarding precision, frequency response, noise, impedance....and others: Yes. Klaus12 replies | 682 view(s)
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21st May 2019, 12:00Hi, you asked about "1VAC to 1VDC converter" ... But the output of your circuit surely is not DC, It is the rectified input wave. DC is ia...16 replies | 2012 view(s)
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21st May 2019, 09:37KlausST replied to a thread [moved] Calculate the Input/Output Capacitor Value on DCDC converter in Power ElectronicsHi, and of course: frequency.. Klaus6 replies | 183 view(s)
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21st May 2019, 09:36KlausST replied to a thread Driving a buzzer using a transistor in Hobby Circuits and Small Projects ProblemsHi, the suggested buzzer of post#25 draws less than 30mA. With a IC/IB ratio of 10 you need 3mA of base current. Shouldnīt be a problem to...28 replies | 3660 view(s)
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21st May 2019, 08:26Hi, High side current source: Transitor at VCC (high side), load at GND Low side current source (current sink): Transistor at GND (low side),...13 replies | 732 view(s)
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