Easy peasy
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Today, 02:20Easy peasy replied to a thread Buck/Boost Battery Charger works on dummy load, but does not charge batteries in Power Electronicsyou can put a zener on the P Fet and a current limiting resistor in series to the gate - ( 28-15 )/10mA = 1k3, say 1k5 - it doesn't need...56 replies | 1537 view(s) -
Yesterday, 22:10Easy peasy replied to a thread Buck/Boost Battery Charger works on dummy load, but does not charge batteries in Power Electronicsbad parts? could put a 2k2 from g-source on the P-fets - just to help out ... slowing the soft start should help to find the p fet problem...56 replies | 1537 view(s)
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Yesterday, 08:30also you don't need the lower o/p choke TVS should go directly across each bridge rect o/p - but if triggered they will likely go bang ...30 replies | 1330 view(s)
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Yesterday, 08:26Easy peasy replied to a thread can secondary inductance be determined from provided data in Elementary Electronic QuestionsReally you should describe the turns ratio as 1:85 i.e. pri to sec ... the sec L is the turns ratio squared times the pri L3 replies | 113 view(s)
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16th June 2019, 21:25Easy peasy replied to a thread Half-Bridge 0-30V, 0-20A Feedback loop problem in Analog Circuit Designyes - they look good - at light load ...(!)19 replies | 544 view(s)
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16th June 2019, 21:23see post #1013 replies | 312 view(s)
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16th June 2019, 10:04Just an update for the thread. Adding a simulation screenshot showing the signals on the graph. I tried again but when I save .png file as...13 replies | 341 view(s) -
16th June 2019, 04:35Easy peasy replied to a thread Half-Bridge 0-30V, 0-20A Feedback loop problem in Analog Circuit Designyou cannot probe the error amp output without introducing noise - or using a 10k resistor on the probe tip - there is a filtering effect - ...19 replies | 544 view(s)
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16th June 2019, 04:34best to decide this under test ...3 replies | 159 view(s)
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16th June 2019, 00:32Okay, thank you. Will do it. Just an update for the thread. Adding a simulation screenshot showing the signals on the graph. Edit: Also...13 replies | 341 view(s)
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15th June 2019, 22:043856: pin 6 does not go to gnd, link 6 & 7 for a voltage follower30 replies | 1330 view(s)
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15th June 2019, 22:03Easy peasy replied to a thread Tip41c/42c arrangement problem in Hobby Circuits and Small Projects Problemsyou need to find xtors with much higher gain ...15 replies | 445 view(s)
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15th June 2019, 22:01Easy peasy replied to a thread Half-Bridge 0-30V, 0-20A Feedback loop problem in Analog Circuit Designlooks like your power supply source is running out of steam and supplying ripple to the input ...19 replies | 544 view(s)
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15th June 2019, 21:39Just an update for the thread. Adding a simulation screenshot showing the signals on the graph. Edit: I need to post an image and forum is not...13 replies | 341 view(s)
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15th June 2019, 11:31It was a lot of work to get the SBP, DBP and MAP readings on LCD and also the MAP signal on DAC. Finally the project is finished. The subject was...13 replies | 341 view(s)
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15th June 2019, 07:01you can easily work out the min slope comp you need above 50% duty cycle ( of maximum ) it has to be greater than half the inductor down slope (...3 replies | 159 view(s)
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15th June 2019, 06:14Easy peasy replied to a thread Tip41c/42c arrangement problem in Hobby Circuits and Small Projects ProblemsTIP41A 42A has fairly low current gain - so you are asking a lot to drive it direct from a 555 ( esp a CMOS one ) - this is one of those...15 replies | 445 view(s)
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15th June 2019, 01:37Easy peasy replied to a thread Buck/Boost Battery Charger works on dummy load, but does not charge batteries in Power ElectronicsSlow the soft start down so it takes ~2 sec to start, use the values in the app note for the control loop - i.e. the slower ones56 replies | 1537 view(s)
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14th June 2019, 22:19Easy peasy replied to a thread Half-Bridge 0-30V, 0-20A Feedback loop problem in Analog Circuit DesignfLC - which is the only freq of interest in the power ckt ( apart from output ESL/ESR with C i.e. self res )19 replies | 544 view(s)
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14th June 2019, 22:14reading data sheets and app notes for oneself can be very instructive ...13 replies | 312 view(s)
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14th June 2019, 10:36easy - some 5W zeners on the DC lines ...13 replies | 312 view(s)
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14th June 2019, 00:04Easy peasy replied to a thread Buck/Boost Battery Charger works on dummy load, but does not charge batteries in Power Electronicsplease post the schematic of the control loop bits - as it is built right now - I suspect a poorly soldered R or C - or cooked/cracked C or...56 replies | 1537 view(s)
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13th June 2019, 22:07Easy peasy replied to a thread Half-Bridge 0-30V, 0-20A Feedback loop problem in Analog Circuit Designstart with 3x slower than the o/p filter ...19 replies | 544 view(s)
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13th June 2019, 22:02Easy peasy replied to a thread Buck/Boost Battery Charger works on dummy load, but does not charge batteries in Power Electronicscheck your schematic / new board for basic errors - e.g. wires crossed over - you may have cooked or cracked a chip R or C in the new build ...56 replies | 1537 view(s)
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13th June 2019, 10:37Easy peasy replied to a thread Half-Bridge 0-30V, 0-20A Feedback loop problem in Analog Circuit Designshunt resistor should be before the o/p filter caps - else you have an extra delay in the current loop you don't need ... - - - Updated - - - ...19 replies | 544 view(s)
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13th June 2019, 09:55Got correct SBP, DBP, and MAP. I messed up the variables inside ADC ISR but got it working. MAP signal in simulation is also okay. I used 1 Hz half...13 replies | 341 view(s)
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13th June 2019, 08:48Easy peasy replied to a thread Half-Bridge 0-30V, 0-20A Feedback loop problem in Analog Circuit DesignPin 10 can be used for cycle by cycle current limiting on the 3525 & 3525A ....19 replies | 544 view(s)
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13th June 2019, 08:38perhaps you need to read the data sheet more closely - it clearly states 1100VDC P-N for 2 sec, and other ratings for P->E 2000Vac and ...13 replies | 312 view(s)
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13th June 2019, 08:10impossible to tell - the golden rule of EMC compliance is: start with everything you can fit ....13 replies | 312 view(s)
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13th June 2019, 07:42No. 2 includes No.1 so both is implied in your post.13 replies | 312 view(s)
About Easy peasy
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- founder MagnetPowerNZ Ltd & Pwrtrnx.com
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- engineer
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