KlausST
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Today, 17:04Hi, Try this: https://lmgtfy.com/?q=online+heatsink+calculator Klaus6 replies | 100 view(s) -
Today, 15:41KlausST replied to a thread [SOLVED] Current source for high current LED driver- 24Vdc/max:16A in Analog Circuit DesignHi, I didnīt say you need resistors with true kelvin connections.... but if you want to spend the money ... it may be a further improvement. ...10 replies | 113 view(s)
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Today, 11:15KlausST replied to a thread [SOLVED] Current source for high current LED driver- 24Vdc/max:16A in Analog Circuit DesignHi, To the function: I see no problem with low side regulation, as long as wiring is correct. On the other side you donīt need to feel...10 replies | 113 view(s)
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Today, 10:53Hi, The schematic of post#29 has some issues. * 200 Ohms may be too low for a standard signal input * the pot misses the GND connection * the...32 replies | 553 view(s)
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Today, 07:49KlausST replied to a thread Car battery STARTER voltage help (not charger) using variety of methods (possibly AC) in Hobby Circuits and Small Projects ProblemsHi, It seems you don't have an idea about the current drawn at starting an engine. This you should do first. Ask at your car garage. Or do an...10 replies | 144 view(s)
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Today, 07:43KlausST replied to a thread measuring slow oscillations with magnetic methods in Miscellaneous EngineeringHi, Define your range of frequency. "Low frequency" does not mean anything. There are natural "low frequencies" with 0.0000224 Hz ... and...3 replies | 63 view(s)
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Today, 07:31Hi, Vague descriptions: "Perfect" --> there is no perfect. You need to live with non perfect waveform. How much tolerance in which regard can you...15 replies | 192 view(s)
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Yesterday, 20:48KlausST replied to a thread Every few Hours clock running fast rtc1307 in Hobby Circuits and Small Projects ProblemsHi, What do you expect from us? * If you want us to validate the hardware --> you need to show us * If you want us to validate the software -->...3 replies | 67 view(s)
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Yesterday, 16:59KlausST replied to a thread add new component EAGLE in PCB Routing Schematic Layout software and SimulationHi, either use the menu at the SCHEMATIC or BOARD window: Library -> use ... then select your library or use the CONTROL PANEL window: LIBRARIES...1 replies | 60 view(s)
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Yesterday, 15:12Hi, did you use - or at least calculate whether you need a heatsink? Klaus6 replies | 100 view(s)
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Yesterday, 15:07Hi, "GND" is just a name ... and it shoud be the signal where (most of) your voltages refer to. You may name every signal "GND" .. itīs up to...6 replies | 94 view(s)
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Yesterday, 14:40KlausST replied to a thread Capacitor Burning issue due to unusual reasons in PC Programming and InterfacingHi, another confusion: The LEDs are connected to "VCC" --> Where is the VCC supply? Btw: Even the 2 Layer PCB includes no true GND plane....36 replies | 441 view(s)
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Yesterday, 14:23Hi, Voltage regulator: Tries to keep the output voltage constant ... regardless of load resistance, regardless of current Current regulator:...3 replies | 100 view(s)
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23rd June 2019, 19:28KlausST replied to a thread OV7670 camera interface with Digilent SPARTAN 3E in PLD, SPLD, GAL, CPLD, FPGA DesignHi, I assume you are experienced enough not be afraid to use a new connector.... this is no rocket science. Additionally there are several...7 replies | 245 view(s)
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23rd June 2019, 18:09KlausST replied to a thread OV7670 camera interface with Digilent SPARTAN 3E in PLD, SPLD, GAL, CPLD, FPGA DesignHi, The OV7670 needs more than 60 I/O to connect to the spartan? Are you sure? Klaus7 replies | 245 view(s)
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23rd June 2019, 16:42KlausST replied to a thread Problems on Sending RS232 Signals through 3 Meter Core Cable in PC Programming and InterfacingHi, No urgent need to measure...but measurement gives exact values with your exact conditions... If 5A (or 0.5A) goes the one way, it has...12 replies | 245 view(s)
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23rd June 2019, 13:37Hi, Note: In post#5 and post#13 you talk about class A, but the TDA2030 is class AB. The "class" (mainly) defines the output stage of the...32 replies | 553 view(s)
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23rd June 2019, 13:24KlausST replied to a thread Capacitor Burning issue due to unusual reasons in PC Programming and InterfacingHi, This is no GND plane, thus you have increased serial impedance at every GND connection. This is not reliable and thus not suitable for...36 replies | 441 view(s)
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23rd June 2019, 13:03KlausST replied to a thread Problems on Sending RS232 Signals through 3 Meter Core Cable in PC Programming and InterfacingHi, It's all very confusing ... at least to me... You gave just a little snippet of information/schematic of what I asked for in post #3. This...12 replies | 245 view(s)
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22nd June 2019, 20:57KlausST replied to a thread Saturation current of coupled inductor used in flyback smps in Power ElectronicsHi, Why don't you read the table on your own? * row: 220uH * column: Isat Klaus3 replies | 115 view(s)
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22nd June 2019, 20:45Hi, There are free simulation software tools. Use them. Klaus13 replies | 249 view(s)
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22nd June 2019, 17:29KlausST replied to a thread Problems on Sending RS232 Signals through 3 Meter Core Cable in PC Programming and InterfacingHi, Show the exact circuit...from master side...which IC, which pin drives which line of which cable...and the complete slave receiver circuit....12 replies | 245 view(s)
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22nd June 2019, 13:53Hi, If there was a clever, cheaper, simpler ... solution ..... it surely is used by the big H-bridge manufacturers and you may find the circuit...13 replies | 249 view(s)
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22nd June 2019, 04:53Hi, No. There are several issues. And one is, that when you connect all ... then you generate the ground loop. Klaus11 replies | 277 view(s)
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21st June 2019, 19:07Hi, here a snippet, there a snippet...this even confuses yourself. Do it for yourself: draw a sketch with all your GND connections and you will see...11 replies | 277 view(s)
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21st June 2019, 17:44Hi, I can't see where you joined both Grounds. If you you did not yet connect them, then connect them. Else: I assume you created a ground...11 replies | 277 view(s)
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21st June 2019, 14:10Hi, Li Ion batteries need very tightly tolerated cut off voltage. Read the battery datasheet and follow the charging recommendations. Overcharging...8 replies | 199 view(s)
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20th June 2019, 22:43KlausST replied to a thread Estimating ripple current of 8 x paralel MLCC 500V 2.2nF for a resonant converter in Power ElectronicsHi, There will always be tolerances when you have 8 capacitors, even if you use them all from the same production batch. Thus the answer...13 replies | 251 view(s)
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20th June 2019, 10:33Hi, Or ESD problem during soldering or assembling... Klaus2 replies | 142 view(s)
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19th June 2019, 23:07Hi, Take a piece of paper and draw the exoected currents. You will soon find out that your information is no sufficient. * I assume the 220V,...2 replies | 131 view(s)
About KlausST
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