Easy peasy
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Today, 05:42you run the risk of frying the igbt - try a relay ... - - - Updated - - - p.s. you only need one triac - the other is redundant - also...4 replies | 72 view(s) -
Today, 01:49Easy peasy replied to a thread LLC converter vs Dual cascaded Buck….1000V to 48V at 500W output…no isolation needed in Power Electronics1000V to 48V, I would do this with 2 x 800V H bridges in series ( we have done up to 4 in series for 3.8kV in, 350Vout 40A ) I would...2 replies | 73 view(s)
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Today, 01:46are we doing home work for students now ... ?4 replies | 192 view(s)
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Today, 01:43if you have 2 equal currents 180 deg out of phase in a wire - the net current is zero - if there are in phase then the current is 2x - this...2 replies | 136 view(s)
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Today, 01:41There are a lot of hard switched H bridges up to 3.5kW ( and well above actually ) usually 20kHz for above 3.5kW and up to 50kHz below 3.5kW ...3 replies | 126 view(s)
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Yesterday, 23:52Easy peasy replied to a thread Testing Amps on rewound microwave transformer in Elementary Electronic Questions... ... ... .13 replies | 511 view(s)
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Yesterday, 01:17There is - or should be - no contradiction - you can use a very small amount of current mode control in an half bridge ( but not too much ..! - ...9 replies | 884 view(s)
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18th January 2020, 10:23baileychic replied to a thread Automatic Water Level Controller - Dynamic Dry-Run and OverLoad Current Calc Related in MicrocontrollersWhy there will be voltage / current spikes ifa MOV is put in parallel across the power line? I have one but not shown in the simulation. One MOV is...12 replies | 893 view(s) -
18th January 2020, 06:34Thamilarasan started a thread ADC Value gets changed when a Digital output enables in Power ElectronicsHi, I have designed a temp controller. The temp from the sensor is measured and amplified. I have an relay in my circuit. The relay is...2 replies | 207 view(s)
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18th January 2020, 04:38JohnDave replied to a thread Earth leakage Detection "positive" as well as "Negative" >30mA. in Professional Hardware and Electronics DesignHi ,Thank you very much I will try this and let you know the status . Thank you5 replies | 430 view(s)
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18th January 2020, 01:22Easy peasy replied to a thread Testing Amps on rewound microwave transformer in Elementary Electronic QuestionsThe current needs to be limited by a suitable load on the output of the Tx - if you apply a too low ohm load you will overload the Tx, this is...13 replies | 511 view(s)
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17th January 2020, 09:33Easy peasy replied to a thread Testing Amps on rewound microwave transformer in Elementary Electronic Questionsalso the pri of a uWave Tx has fewer turns than a conventional Tx - it runs very high peak flux and high peak magnetising current - as a result...13 replies | 511 view(s)
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17th January 2020, 09:00Easy peasy replied to a thread Earth leakage Detection "positive" as well as "Negative" >30mA. in Professional Hardware and Electronics Designhere you go :-5 replies | 430 view(s)
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17th January 2020, 03:15Easy peasy replied to a thread LoopGain analysis with multiple feedback loop in Analog Circuit Design@ The Electrician - they are resistors -9 replies | 433 view(s)
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16th January 2020, 02:19Easy peasy replied to a thread Need to reduce drain voltage spike in LM5019 Buck converter in Power Electronicsif you short your "probe" on the Vin line and still see the spikes - you know it is the probing system - you can subtract the artifact spikes...5 replies | 294 view(s)
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15th January 2020, 21:56Easy peasy replied to a thread Need to reduce drain voltage spike in LM5019 Buck converter in Power Electronicscould be partially your scope - see how you have a spike on the current - where no spike should be - e.g. at turn off the current simply cannot...5 replies | 294 view(s)
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15th January 2020, 05:26Easy peasy replied to a thread [SOLVED] Need very basic R-C "delay off" circuit in Hobby Circuits and Small Projects Problemsyes - for a fast turn on the diode points to the base of the Darlington, i.e. cathode to base ...7 replies | 419 view(s)
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15th January 2020, 05:24Easy peasy replied to a thread Earth leakage Detection "positive" as well as "Negative" >30mA. in Professional Hardware and Electronics Designyou set up a balanced 30mA using a class B amp structure with the earth in the middle - that way if either the + or - is pulled to earth by...5 replies | 430 view(s)
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15th January 2020, 01:33Easy peasy replied to a thread Regulating temperature of mains connected heating element: Skipping mains half cycles in Power ElectronicsSo you want full cycles of control ( 20mS for 50Hz ) or multiples thereof, zero crossing detect opto coupler and a ckt that keep the firing on for...37 replies | 1905 view(s)
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14th January 2020, 23:16Easy peasy replied to a thread [SOLVED] Need very basic R-C "delay off" circuit in Hobby Circuits and Small Projects Problemsacross the timing resistor 220k, if you apply 3v3 or 5V to the 220k it will take a while for the volts to come up to 1.1V necessary to turn on...7 replies | 419 view(s)
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14th January 2020, 08:11here you go, this link contains schematics that will supply what you want ... ...2 replies | 195 view(s)
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14th January 2020, 08:01Easy peasy replied to a thread [SOLVED] Need very basic R-C "delay off" circuit in Hobby Circuits and Small Projects Problemsif you use darlington connected xtors (bjt's) to turn on the relay, emitter gnded, then you can have 4u7 on the base to gnd and 220k drive...7 replies | 419 view(s)
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14th January 2020, 04:58JohnDave started a thread Earth leakage Detection "positive" as well as "Negative" >30mA. in Professional Hardware and Electronics DesignHi , I am working on one project in which it require earth leakage detection >30mA on both positive and negative side. So,could you please suggest...5 replies | 430 view(s)
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14th January 2020, 03:52Easy peasy replied to a thread Regulating temperature of mains connected heating element: Skipping mains half cycles in Power ElectronicsMost 1st world countries require that the net average DC over a 24 hour period be 5mA or less - this to prevent earth stake corrosion If you draw...37 replies | 1905 view(s)
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13th January 2020, 02:04agreed - you need a peak power ckt to draw the max from the panels ( even on on a sunny day ) and batteries to store (hopefully) the excess so...5 replies | 495 view(s)
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12th January 2020, 02:36Easy peasy replied to a thread Resistor at input to high side current monitor IC in Elementary Electronic Questions"Transient Protection Add a protection resistor (RP) in series with the LOAD pin if VSENSE can exceed 5.0V in positive sense or 600mV in negative...3 replies | 333 view(s)
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11th January 2020, 10:21if you measure the high side gate drive w.r.t. 0v then you will see the totem pole shift + the gate drive signal ... - - - Updated - - - you...22 replies | 1620 view(s)
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10th January 2020, 09:45Easy peasy replied to a thread [SOLVED] Technique behind the Charging and Inverting Function of an Inverter in Power Electronicsyou cannot use the same Tx to charge the battery without some sort of boost circuit to raise the output of the rectified low voltage winding ...6 replies | 473 view(s)
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10th January 2020, 09:09look up "boost converters" used a lot in transformerless grid tied inverters to step up the PV panels to 380VDc for inversion to 230Vac ...5 replies | 495 view(s)
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10th January 2020, 09:06Seems unlikely you will get 3kW continuous through an ETD54 at 50kHz - what is your calc Bpk under these conditions? Usual way to stop flux...7 replies | 431 view(s)
About Easy peasy
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- founder MagnetPowerNZ Ltd
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- Melbourne
- Occupation:
- engineer
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