Easy peasy
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Yesterday, 05:23a pk current mode controlled sepic will also reduce the order of the power system - i.e. allow a faster control loop - as will average current...22 replies | 907 view(s) -
Yesterday, 05:19the ramp signal is approx 0.7 - 3.6V ... a span of 2.9 volts ...9 replies | 353 view(s)
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Yesterday, 01:21Simple 2 switch fwd converter would work well here too ..13 replies | 358 view(s)
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28th May 2020, 23:04R19 is very useful if the layout is too open and the centre of the totem pole goes below ground - this is not uncommon and generally blows up a...14 replies | 694 view(s)
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28th May 2020, 04:55Sepic converter stage run by any boost chip with internal xtor / fet ...9 replies | 332 view(s)
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28th May 2020, 04:54Easy peasy replied to a thread Today I learned something else... in RF, Microwave, Antennas and OpticsThey operate just off the res freq for the water molecule - for operational food heating reasons ...!1 replies | 198 view(s)
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28th May 2020, 04:52solid plastic tube, acryllic, or hard ABS ... - - - Updated - - - Also, phone with a freq vs amplitude app display, move the u-phone around ...8 replies | 342 view(s)
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28th May 2020, 01:33C25 needs 1uF 50V MLCC across it - right by the pins of the GD IC ...14 replies | 694 view(s)
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28th May 2020, 01:29Prof Cuk is indeed an expert on his own creations - however I once queried him on optimal design for a flyback - and found his ideas...8 replies | 570 view(s)
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27th May 2020, 03:34another newbie oversight - when the fet turns on there is an enormous current pulse as it shorts out the blocking cap via the diode that shouldn't...22 replies | 907 view(s)
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26th May 2020, 21:34your ckt is missing a choke - has diode instead ...?22 replies | 907 view(s)
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26th May 2020, 09:59Easy peasy replied to a thread Transformer coupled Class A amplifier in Elementary Electronic QuestionsNo - it is just the fact that once the xtor has turned on, i.e. output goes low, you have stored an amount of energy in the xfmr core, now if...7 replies | 372 view(s)
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25th May 2020, 07:20Neazoi, post a link to the data sheet to make it easier for people to point out the relevant bits for Rds-on at Vgs = 5V & 200mA ...9 replies | 469 view(s)
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25th May 2020, 07:18Sigh, 1uF MLCC pin 8-6, AND ... R2 = 6R8 ... AND R3 = 10 ohms,14 replies | 694 view(s)
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25th May 2020, 07:14it is a closed mag path - just look harder ....3 replies | 254 view(s)
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24th May 2020, 06:23We have built Sepics to 350kHz, choose Sepic when you want low input ripple ( and can have a quality o/p cap ) Zeta ( or inverse Sepic ) ...22 replies | 907 view(s)
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22nd May 2020, 08:09laptop psu's do make a lot of CM noise ...17 replies | 822 view(s)
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21st May 2020, 04:06Easy peasy replied to a thread Determining Value of Capacitor Between PV Panel and DC-DC Convertor. in Power ElectronicsHello Brad, um, where do you get the 0.5 amps from ... ?7 replies | 562 view(s)
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21st May 2020, 00:30Easy peasy replied to a thread Dont need a super accurate, super high bandwidth In Amp... in Analog Circuit DesignLM324 / 358 ( same IC but pair / quad ) would be fine for this ...6 replies | 394 view(s)
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21st May 2020, 00:29Easy peasy replied to a thread Determining Value of Capacitor Between PV Panel and DC-DC Convertor. in Power ElectronicsIf in doubt, put 1000 - 2200uF at 1.5 x max input volts on the input to the converter - hopefully it runs MPPT so that it's output will...7 replies | 562 view(s)
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21st May 2020, 00:21Easy peasy replied to a thread Problem with current loss with increasing length of wire in Hobby Circuits and Small Projects Problemskeep doubling up or tripling up the wires .....7 replies | 696 view(s)
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21st May 2020, 00:11Easy peasy replied to a thread Dont need a super accurate, super high bandwidth In Amp... in Analog Circuit DesignBrian's idea will work but need needs a split supply for the op-amp - unless you offset each input from the ( accurate ) 5V supply ...6 replies | 394 view(s)
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20th May 2020, 10:47JohnDave started a thread Determining Value of Capacitor Between PV Panel and DC-DC Convertor. in Power ElectronicsHi, I Am working on a Solar based DC-DC Converter its a BUCK-Boost converter, and As I read some of the articles related to the same topic Capacitor...7 replies | 562 view(s)
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19th May 2020, 09:15Easy peasy replied to a thread Relative Robustness of power semiconductors (generally) in Power ElectronicsSCR is the one that can handle the highest current peak, but it has a di/dt limitation at turn on - so series L needed IGBT driven at 7 volts...2 replies | 291 view(s)
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19th May 2020, 05:45" trial " process can be done with paper, pencil & calculator, iterating on paper gets you a lot closer to a real transformer that won't overheat...10 replies | 603 view(s)
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19th May 2020, 03:58The methods are in fact exactly the same with some fudge factors built in for wdg fill factor for the "formula" approach, same as my method, ...10 replies | 603 view(s)
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19th May 2020, 00:25Easy peasy replied to a thread Uplight dimmer based on phase-fired controller: Noise Issue in Service Manuals, Requests, Repair Tipsyour: www.uhu.com/en/product-page/plus-endfest/3950 is worth a try - get plenty on - esp around all the wires .... on the core ... heat...17 replies | 1422 view(s)
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18th May 2020, 09:10Easy peasy replied to a thread 100uA analogue meter conversion to 1A? in Hobby Circuits and Small Projects Problemshow to measure: 1.5V cell or power supply, 10k pot wired as rheostat, put in series with the meter, wind rheostat down to min while observing...16 replies | 818 view(s)
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18th May 2020, 06:30The IF is tuned so that the difference freq is the one of interest, 455kHz for the AM band for 88-108 FM the IF can be tuned over the same...6 replies | 412 view(s)
About Easy peasy
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- founder MagnetPowerNZ Ltd
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- engineer
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