Easy peasy
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Yesterday, 17:28baileychic replied to a thread RTC with 7-Segments to display seconds in 2 seven segments in MicrocontrollersDo you see all pins of PIC have gray boxes or do some have red or blue boxes next to pins? If all have gray boxes then PIC is excluded from...4 replies | 75 view(s) -
Yesterday, 16:02I asked you to zip and post complete mikroC PRO PIC project files. You just attached .mcppi (project file). Where are the other files of the project...13 replies | 202 view(s)
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Yesterday, 14:48Zip all project related file you have so that it can be quickly tested and fixed if needed or explained to you want needs to be fixed.13 replies | 202 view(s)
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Yesterday, 05:59Provide a link from where you got soft_uart code or is it that you cannot get the mikroC's Soft_Uart() library code working? Zip and post your...13 replies | 202 view(s)
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22nd May 2019, 23:32You don't need MAX232 in Proteus. If you are connecting external UART device to Proteus then just use COMPIM and connect COMPIM's RXD to PIC RX and...13 replies | 202 view(s)
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22nd May 2019, 22:30Easy peasy replied to a thread dc to ac coverter circuit not working in Hobby Circuits and Small Projects ProblemsIf there was full bridge drive, and the L and the C were resonant at 50Hz ( or 60Hz ) and the Lmag of the Tx was low, then the turn off...7 replies | 752 view(s) -
22nd May 2019, 08:14Easy peasy replied to a thread dc to ac coverter circuit not working in Hobby Circuits and Small Projects Problemsthe 555 cannot really provide sufficient base current to drive the xtors ....7 replies | 752 view(s)
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22nd May 2019, 06:20Easy peasy replied to a thread 400-800Hz 115VAC PFC (100w, 28vout) with dual interleaved flyback (isolated) in Power Electronicsyou need the aux to hold up thru the zero crossings so that you can force the power ckt to switch at higher duty cycle thru the zero xings to force...5 replies | 193 view(s)
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22nd May 2019, 05:55baileychic replied to a thread Can't get digits other than 'zero' in 4-DIGIT 7-SEGMENT DISPLAY in MicrocontrollersThe display enable pins that is the 4 common cathode pins need a pull-up of say 10k to 5V in Proteus but not needed in hardware.6 replies | 375 view(s)
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22nd May 2019, 03:16Easy peasy replied to a thread [moved] Calculate the Input/Output Capacitor Value on DCDC converter in Power ElectronicsFrom the data sheet: "Output capacitance: An output capacitor of at least 100uF with an ESR of ~50mOhms is recommended to damp Note that all...6 replies | 176 view(s)
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22nd May 2019, 03:10Easy peasy replied to a thread 400-800Hz 115VAC PFC (100w, 28vout) with dual interleaved flyback (isolated) in Power ElectronicsAt 100W we have done single flyback high PFC design with UC3854 ( an old chip but a good one ) adding a few bits to do the zero xing nicely and...5 replies | 193 view(s)
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21st May 2019, 20:54thank you mtwieg. - - - Updated - - - shifting the step of the upper set of graphs left by 1/2 a cycle will be instructive. It will not...27 replies | 554 view(s)
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21st May 2019, 20:51Easy peasy replied to a thread 400-800Hz 115VAC PFC (100w, 28vout) with dual interleaved flyback (isolated) in Power Electronicsyou can easily pull power off the boost chokes for a pri side aux, and then a xtor reg to make it flat. - - - Updated - - - as long as there...5 replies | 193 view(s)
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21st May 2019, 06:54apologies, but the timing of the step in the graphs is of import - even so the poorly behaved one has higher power o/p within one cyc - - -...27 replies | 554 view(s)
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20th May 2019, 22:07Um, not quite, if you are in true DCM - not boundary mode - then there is no delayed action type RHP zero - regardless as to whether you...27 replies | 554 view(s)
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20th May 2019, 21:19asdf44 - sorry wrong, in DCM there is always dead time - if you use more of the dead time in raising the current you get more output on the...27 replies | 554 view(s)
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20th May 2019, 09:24No - I am not considering a closed loop converter - than would be irrelevant anyhow - I'm putting it as simply as can be - In DCM if you...27 replies | 554 view(s)
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20th May 2019, 08:23hi - just read it - you refer to equ 18 & 19 in that paper - the so called RHP zero is in fact formed from the output load and the ESR...27 replies | 554 view(s)
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20th May 2019, 05:04But no - not in DCM, in DCM when the D is increased a little the total power to the load goes up in that cycle, because time where the current...27 replies | 554 view(s)
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20th May 2019, 02:19Respectfully - I cannot agree with you.27 replies | 554 view(s)
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19th May 2019, 22:33looking at those equations, they only come into play when Rload is very large and the duty cycle D is very large & L is large - under these...27 replies | 554 view(s)
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17th May 2019, 07:46Easy peasy replied to a thread Phase and frequency locking multiple (9 units) LLC drivers that are each 10cm apart in Power ElectronicsWhy I insist on LLC: 1- Severe oscillations on the secondary rectifiers.(especially at light load). Need heavy snubbers to damp. Yes but its...15 replies | 427 view(s)
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16th May 2019, 21:56you seem not quite to understand the full import of the word - unavoidable. Your sim and the real world will be different, choose mosfets with...13 replies | 1397 view(s)
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16th May 2019, 21:45Easy peasy replied to a thread Phase and frequency locking multiple (9 units) LLC drivers that are each 10cm apart in Power ElectronicsThe assumption is, with rectifying, that you have very large o/p caps to give a stable Vout - without this the paralleling you are seeking...15 replies | 427 view(s)
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16th May 2019, 08:47you haven't zoomed in on the overshoot at turn off - what you have captured is a blip ... please try again ...12 replies | 1345 view(s)
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15th May 2019, 23:27Your gate drive is possibly too soft, the overshoot is well reduced with the 100nF 630V cap across the supply right by the IGBT's the...12 replies | 1345 view(s)
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15th May 2019, 08:38not Cds, reverse recovery of internal diode - if you dissect the fet model you may see it there ... - in real world it will likely be less...13 replies | 1397 view(s)
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15th May 2019, 04:02Easy peasy replied to a thread Phase and frequency locking multiple (9 units) LLC drivers that are each 10cm apart in Power Electronicsimpossible to answer without seeing the control ckt so far ...15 replies | 427 view(s)
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15th May 2019, 03:59you might consider putting in a resistive load on the sim ... - - - Updated - - - the sim might be giving the reverse recovery in the other fet...13 replies | 1397 view(s)
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15th May 2019, 03:54Easy peasy replied to a thread Help for my Collpits oscillator circuit in RF, Microwave, Antennas and Opticsthe layout is just too open - which is not helping - your gnd plane is not a gnd plane, use blank pcb ( full copper sheet ) and solder every...11 replies | 1076 view(s)
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- founder MagnetPowerNZ Ltd & Pwrtrnx.com
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