Easy peasy
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Yesterday, 23:44Easy peasy replied to a thread Pulse transformer gate drive for offline half bridge SMPS in Power Electronicsthe GD Tx sees the pri side rail volts at switching frequency - so some pretty decent insulation needed for 10 year service life - - - Updated...2 replies | 106 view(s) -
14th December 2019, 00:39An LC ckt should do it, say we charge a cap to 60V and run it through an L to give a 400A peak, the Zo = 0.15 ohms thus the L required = ...3 replies | 189 view(s)
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14th December 2019, 00:26Easy peasy replied to a thread Half Bridge SMPS in Current Mode but with slope compensation is OK? in Power Electronicsif you add a lot of slope comp, technically the ckt is no longer just current mode - but tends to be closer to voltage mode - in its control...4 replies | 185 view(s)
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13th December 2019, 12:51Q5 was for turning On/Off 12V supply. I will better use ON/OFF pin of LM2596 to achieve it. I will post a new circuit soon. This is the new...24 replies | 898 view(s) -
13th December 2019, 12:46baileychic replied to a thread [PIC] I wrote simple code buttons to rotary for PIC12F509, but it works only on simulation! in MicrocontrollersShow your actual hardware encode and provide its datasheet.5 replies | 372 view(s)
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12th December 2019, 19:04baileychic replied to a thread [PIC] I wrote simple code buttons to rotary for PIC12F509, but it works only on simulation! in MicrocontrollersHere is a code that you can use with a little modification according to your PIC. // Value changes up or down as encoder is turned. // encoder...5 replies | 372 view(s)
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12th December 2019, 12:01Is this okay now?24 replies | 898 view(s)
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12th December 2019, 09:57Okay, I will add an N-Channel Low-Side MOSFET between Peltier's -Ve pin and GND connection. That solves my issue.24 replies | 898 view(s)
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12th December 2019, 08:22I found that Peltier can run from 14.5V also so the voltage drop is not an issue now. The only issue now is how can I use a MOSFET high-side to...24 replies | 898 view(s)
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11th December 2019, 09:32well - you need to sit down and do some sketches and some design ... and try to largely work it out yourself12 replies | 479 view(s)
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11th December 2019, 08:17look up CD4046 - it will give you a few ideas on phase comparators - and how it can be done ....12 replies | 479 view(s)
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11th December 2019, 06:56Now there is an additional requirement and that is I have to control the load power by using a MOSFET switch. The load power is supplied by the +15V...24 replies | 898 view(s)
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9th December 2019, 20:44Easy peasy replied to a thread Grid tied inverters will result in high mains voltages above 300VAC..do you agree? in Elementary Electronic QuestionsAll the grid tied inverters I have designed would be off above 245Vac - there's really no point them being on - after all there is plenty of...5 replies | 333 view(s)
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9th December 2019, 06:38Easy peasy replied to a thread PFC controller datasheets do not tell you that they need to damp LC filter ringing? in Power Electronicshow do you know the ringing isn't due to your input filters suddenly being unloaded when the buck ckt goes off - then on ...? sure M3 provides...2 replies | 386 view(s)
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9th December 2019, 06:31Easy peasy replied to a thread Grid tied inverters will result in high mains voltages above 300VAC..do you agree? in Elementary Electronic Questionsa peak voltage sense of 365Vpk or so would be fast enough to shut off an inverter in a few uS. However, even 20mS of 300Vac will not damage the...5 replies | 333 view(s)
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9th December 2019, 04:01How to limit the charging current to the battery? I don't want it to be more than 2A.24 replies | 898 view(s)
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9th December 2019, 00:20@BradTheRad Thank you for the circuit. Can I drive the Complementary transistors in your circuit with PWM from MCU (PIC) instead of using the...24 replies | 898 view(s)
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8th December 2019, 13:10I fixed the MOSFET circuit with High Side Driver but still, it doesn't work as needed. Find the new circuit which is attached. In simulation...24 replies | 898 view(s)
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8th December 2019, 12:14Corrected in previous post There is no time to design a DC-DC Converter and a Battery Charger at this time and hence I am going to use this...24 replies | 898 view(s)
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8th December 2019, 10:12Car Cooling System PSU Design Related I am doing a Car Cooling system using Peltier (4x) and PIC18F46K22. 2x LM35 are used to sense room...24 replies | 898 view(s)
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8th December 2019, 01:03Only the gate to source gives you a usable capacitance ( unless you have a J-fet ) if you use D-S the cap will be dominated by the channel...18 replies | 773 view(s)
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7th December 2019, 06:35your 100uF should be very low ESR/ESL - but, putting that to one side - it is just as likely your scope is picking up common mode impulses - ...4 replies | 306 view(s)
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6th December 2019, 01:36Easy peasy replied to a thread Seeking: 3400uF 50VAC or greater low loss, tan-delta < 0.01 say in Power Electronicshow I did it: - by searching the internet company is reliable? I got a detailed data sheet and have samples in transit.5 replies | 429 view(s)
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5th December 2019, 00:47if you are asking this sort of question - you are going to have real trouble getting this ckt going ...23 replies | 1242 view(s)
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4th December 2019, 09:05you show a centre tapped output in the schematic above, are you saying 21 x 0.55 dia = 5mm^2, OK, but if you have a simple sec over pri wdg...7 replies | 533 view(s)
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4th December 2019, 03:49Are the cores moving in the Tx? what is the gap you have used? how slow is the soft start?23 replies | 1242 view(s)
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4th December 2019, 03:47you haven't - in the schematic, connected the the CT of the Tx to the zero volt of the output caps...! this will cause problems ... you...7 replies | 533 view(s)
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3rd December 2019, 03:12Easy peasy replied to a thread Iron Core Transformator No Load Current (Core material) in Power Electronicstype B may be thinner lams or toroidal...? = lower losses or more turns on pri wdg ...3 replies | 286 view(s)
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2nd December 2019, 09:42soft start cap needs to be bigger for a longer soft start - say 1uF and 470ohm current limit R in series how do you know that the phasing is...23 replies | 1242 view(s)
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1st December 2019, 20:04given the total capacitive loading on the sec's - you need a much longer soft start ... - - - Updated - - - however - transformer...23 replies | 1242 view(s)
About Easy peasy
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- Power Electronics
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- founder MagnetPowerNZ Ltd
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- Melbourne
- Occupation:
- engineer
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