Easy peasy
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Today, 11:01@Klaus Good answer. You are right. My SSR module uses this SSR and it is ZC type. ...2 replies | 47 view(s) -
Today, 10:24baileychic replied to a thread [SOLVED] PLL and LCD: LCD shows garbage while PLL is used in MicrocontrollersAt least you could have posted the LCD connections to dsPIC so that I could have written a sample LCD test code in mikroC PRO dsPIC. For simple LCD...7 replies | 325 view(s)
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Today, 10:21Remote Controlled Switch Board Issue See attached circuit. This is the circuit which I designed. The issue is there is no common GND between...2 replies | 47 view(s)
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Today, 03:44Easy peasy replied to a thread how to measure the output of a crystal oscillator? in Power ElectronicsYou may be able to measure a few volts of AC on a 32kHz output ( 5V ) depending on your multimeter ...15 replies | 173 view(s) -
Yesterday, 22:45Easy peasy replied to a thread how to measure the output of a crystal oscillator? in Power Electronicsthere is no way a multi-meter can give a useful result - it will load the Xtal and likely stop it working - only a scope with a 100x probe or...15 replies | 173 view(s)
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Yesterday, 09:37In the for() loop local variable j goes from 0 to 9 and when it becomes 10 the loop breaks.6 replies | 155 view(s)
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Yesterday, 00:43if you connect the ground of a scope to a high frequency transformer secondary with many volts on it - you allow RFI radiation - this can get...2 replies | 166 view(s)
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27th February 2020, 08:18baileychic replied to a thread [SOLVED] PLL and LCD: LCD shows garbage while PLL is used in MicrocontrollersZip and post the complete mikroC PRO dsPIC project so that the Oscillator settings could be examined. In mikroC projects the oscillator settings...7 replies | 325 view(s)
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26th February 2020, 21:12Easy peasy replied to a thread [SOLVED] Different FETs for Top and Bottom FET in synchronous Buck converter in Power ElectronicsShort answer = yes3 replies | 226 view(s)
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26th February 2020, 21:11as Klaus says, the above is a very bad idea, get some help from some one who has some experience in power electronics ...6 replies | 280 view(s)
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26th February 2020, 03:35Easy peasy replied to a thread Adding an LC post filter can make an SMPS unstable....use RC filter instead? in Power ElectronicsYes, put damped C's on your power supply, and damping in the control loops, 3rdly specify max capacitance load, it is generally only a problem...7 replies | 306 view(s)
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26th February 2020, 02:06A variac and an isolating transformer ...3 replies | 259 view(s)
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26th February 2020, 02:05at start up with no load these simple bang-bang reg's can go over volts and sit there for a long time until the leakage current on the electro...6 replies | 280 view(s)
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25th February 2020, 04:53Easy peasy replied to a thread Adding an LC post filter can make an SMPS unstable....use RC filter instead? in Power ElectronicsIf you load a converter with a less than critically damped LC stage, where the Fo is close to or less than the crossover freq of the converter - ...7 replies | 306 view(s)
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25th February 2020, 04:48The 1k should be in the Drain of Q5 ... else it affects the gate drive volts of Q5 ...5 replies | 186 view(s)
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25th February 2020, 04:44Easy peasy replied to a thread Calculating capacitor ripple current in output filter of DCDC module? in Power Electronicsjust for clarity, Tan-delta is used to calc losses, capacitor VA x tan-delta = watts i.e. 2Vrms x 2A rms = 4 VA in the cap x ...11 replies | 471 view(s)
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24th February 2020, 07:17Easy peasy replied to a thread Calculating capacitor ripple current in output filter of DCDC module? in Power Electronicsthe resistance of the cap at 750kHz ( it will be higher than ESR min at resonance ) will add vectorially to the XL at 750kHz to give a Z some...11 replies | 471 view(s)
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24th February 2020, 04:22Easy peasy replied to a thread Calculating capacitor ripple current in output filter of DCDC module? in Power Electronicsjust a note, most electro's are self resonant from 50 - 100kHz, i.e. above this they are inductors, they provide bulk storage for low...11 replies | 471 view(s)
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24th February 2020, 04:19where are you buying for control IC's from ... ?35 replies | 886 view(s)
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24th February 2020, 01:12Easy peasy replied to a thread Calculating capacitor ripple current in output filter of DCDC module? in Power ElectronicsV ripple is given as 1Vpp ( at a min load ) this is 350mV rms, most of the current ripple generated by the converter is soaked up by the...11 replies | 471 view(s)
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24th February 2020, 01:06Easy peasy replied to a thread Need to ensure SMPS output filter has at least 10mR of ESR...use "ESR resistor"? in Power ElectronicsSay you use 1000uF on the o/p, ues 2 x 470uF low ESR put 10 milli-ohm in series with one of them - job done - it will be stable ...7 replies | 329 view(s)
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23rd February 2020, 21:59Easy peasy replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects Problemspower in snubber resistors is approx = C. Vpk^2 F for 15-0-15 Vpk ~ 42Vpk, F = 50/60 Hz, say C = 100nF, then power in R = 10mW for...43 replies | 4125 view(s)
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23rd February 2020, 21:53Yes the 200W light bulb is only a few ohms when cold - so unless your soft start is ~ 30 seconds, you will never get it going ... even then...35 replies | 886 view(s)
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23rd February 2020, 07:18Easy peasy replied to a thread Inductance of coile dup cbale on winch (twisted pair or just two strand) in Power Electronicsagreed - twisted pair and side by side is essentially the same thing, for send & return coiling has no effect ... - - - Updated - - - as to...2 replies | 231 view(s)
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23rd February 2020, 07:16transformer design and phasing of windings is critical to the flyback circuit working - as is making sure the feedback is working before applying...4 replies | 292 view(s)
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22nd February 2020, 23:03Easy peasy replied to a thread Rectifier diodes with bypass capīs & gounding speaker basketīs in Hobby Circuits and Small Projects Problemsif you are happy putting snubbers across the 15Vac - then go for it ...43 replies | 4125 view(s)
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22nd February 2020, 10:37there is no limit on the duty cycle if the feedback, via opto, does no work properly. There is a 36V zener inside the chip on the Vcc line - but...35 replies | 886 view(s)
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22nd February 2020, 10:23the problem here is lack of cognitive function, without a zener the Vcc will be exceeded if the IC does not start ....35 replies | 886 view(s)
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22nd February 2020, 10:13Simple logic tells you that if the IC fails through over-voltage it is likely that over-voltage will make it to the gate pin, holding the fet on, ...35 replies | 886 view(s)
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22nd February 2020, 09:41OK - it's pretty ugly gate drive - but cannot say more without a schematic ...69 replies | 3709 view(s)
About Easy peasy
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- founder MagnetPowerNZ Ltd
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- Melbourne
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- engineer
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