Easy peasy
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Today, 02:07Easy peasy replied to a thread Buck/Boost Battery Charger works on dummy load, but does not charge batteries in Power Electronicsbeware static damage too ...65 replies | 1720 view(s) -
Today, 00:35220Vac rms is 311 Vpk, a 320V bus is a little light for this, the DC bus current will be the average current flowing to the load: for 2.5A...2 replies | 43 view(s)
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Yesterday, 21:35Easy peasy replied to a thread Buck/Boost Battery Charger works on dummy load, but does not charge batteries in Power ElectronicsWell spotted Danie. We all look forward to hearing what clears up the issues ...65 replies | 1720 view(s)
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Yesterday, 21:33Easy peasy replied to a thread Loop Compensation Characteristics with Degraded parts in Boost PFC. in Power Electronicsif the diode degrades => Bang..! Ditto for the mosfet ...4 replies | 78 view(s)
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Yesterday, 21:30only one choke is needed at the top - you can put a choke in the neg for balance and more CM filtering if you wish - but not needed there is...32 replies | 1361 view(s)
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Yesterday, 08:34Easy peasy replied to a thread Half-Bridge 0-30V, 0-20A Feedback loop problem in Analog Circuit Designyou have a loop issue at 2kHz, you need more phase lead at 1kHz ...23 replies | 685 view(s)
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Yesterday, 06:05Easy peasy replied to a thread Loop Compensation Characteristics with Degraded parts in Boost PFC. in Power Electronicsover time the E cap will lose capacitance and the ESR will go up - depending on how hard it is used ( rms current ) losing capacitance means the...4 replies | 78 view(s)
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Yesterday, 03:22Easy peasy replied to a thread Buck/Boost Battery Charger works on dummy load, but does not charge batteries in Power Electronicsaccording to the graph in the data sheet you can have up to 0.5V and 100% I, ( 10A ) this is 5W in the P-fet, even 2W in the P-fet may cook it...65 replies | 1720 view(s)
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Yesterday, 02:38Easy peasy replied to a thread Current Transducer Test Rig - Doubts in Hobby Circuits and Small Projects ProblemsEasy enough to have made a 230V single phase Tx with an open sec that you can put a single turn thru to get 3kA, then control from the Variac ...1 replies | 89 view(s)
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Yesterday, 02:34Easy peasy replied to a thread Buck/Boost Battery Charger works on dummy load, but does not charge batteries in Power ElectronicsKeep checking between old and new boards - read the data sheet and the app notes carefully ...! - - - Updated - - - Two things from the data...65 replies | 1720 view(s)
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Yesterday, 00:05Easy peasy replied to a thread Half-Bridge 0-30V, 0-20A Feedback loop problem in Analog Circuit Designyou've got more damping at the higher loads - looking at the pictures23 replies | 685 view(s)
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18th June 2019, 23:30baileychic replied to a thread SMPS selection for Big 6-Digit 7-SEGMENTS display as driver in MicrocontrollersIt is multiplexed and so only one digit will be ON at a time and so the current draw at any instance is max 440mA. You should not run LEDs at max...8 replies | 195 view(s) -
18th June 2019, 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...65 replies | 1720 view(s)
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17th June 2019, 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...65 replies | 1720 view(s)
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17th June 2019, 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 ...32 replies | 1361 view(s)
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17th June 2019, 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 | 129 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 ...(!)23 replies | 685 view(s)
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16th June 2019, 21:23see post #1013 replies | 350 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 | 382 view(s)
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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 - ...23 replies | 685 view(s)
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16th June 2019, 04:34best to decide this under test ...3 replies | 175 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 | 382 view(s)
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15th June 2019, 22:043856: pin 6 does not go to gnd, link 6 & 7 for a voltage follower32 replies | 1361 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 ...18 replies | 537 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 ...23 replies | 685 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 | 382 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 | 382 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 | 175 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...18 replies | 537 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 ones65 replies | 1720 view(s)
About Easy peasy
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- Power Electronics
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- founder MagnetPowerNZ Ltd & Pwrtrnx.com
- Occupation:
- engineer
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