baileychic
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Today, 05:38it all depends on how much averaging of each harmonic the meter has to do - if the system under test has a steady state then yes a picoscope FFT...10 replies | 677 view(s) -
Today, 05:35Easy peasy replied to a thread Extracting energy from gyroscope precession in Mathematics and Physicsit's not built up from nothing - the friction in the system allows the swing user to impart momentum ... and therefore build up the swing...25 replies | 663 view(s)
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Today, 05:33Easy peasy replied to a thread PS with LM76003 for variable volatage and variable current design? in Analog Circuit Designlots of input capacitance is necessary to make it stable ...2 replies | 194 view(s)
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Yesterday, 20:56Easy peasy replied to a thread Extracting energy from gyroscope precession in Mathematics and Physicsplease point me to the frictionless bearings and the part where anything spinning in air has no frictional losses .... my credit card is ready ...25 replies | 663 view(s)
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Yesterday, 09:31Easy peasy replied to a thread Extracting energy from gyroscope precession in Mathematics and Physicsas you try to turn the axis of the bike wheel you encounter an opposing force against which you push - this is transferred through your body to the...25 replies | 663 view(s)
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Yesterday, 09:24a really good look around your circuit would have saved you a lot of time I'm thinking ...26 replies | 715 view(s)
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16th September 2019, 08:51do you have any CM chokes with measured leakage L on the input ...? and of a certain resistance ...?8 replies | 293 view(s)
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16th September 2019, 08:48Easy peasy replied to a thread Li-ion Battery charger need help in Hobby Circuits and Small Projects ProblemsHello Maxim, there is a curve for 1C charging in the data sheet - but really 1/5 C to 1/3 C is a better charging maximum, i.e. 5/3 amps for a 3...4 replies | 181 view(s)
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16th September 2019, 05:42Easy peasy replied to a thread Transformer primary current in GreatScott videp in Elementary Electronic QuestionsHis explanation is bollocks - more likely he did the calc wrong or measured Lpri wrong, or his gear cannot measure 143mA very well (most likely )...1 replies | 172 view(s)
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15th September 2019, 21:49You really need a scope with properly isolated inputs - to measure things in your circuit - having too many ground connections at the same or...26 replies | 715 view(s)
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15th September 2019, 21:43Easy peasy replied to a thread Extracting energy from gyroscope precession in Mathematics and PhysicsGyro scopes can be magnetically coupled to coils that can speed up or receive energy from the gyroscope - this approach is now widely used in...25 replies | 663 view(s)
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15th September 2019, 21:39correct ...8 replies | 293 view(s)
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15th September 2019, 07:39Easy peasy replied to a thread To which standards must we conform for our electronics/electrical product? in Professional Hardware and Electronics Designlook up other IPL machines and whatever standards they say they conform to4 replies | 301 view(s)
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15th September 2019, 07:38you appear to have no caps across the DC bus ...26 replies | 715 view(s)
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14th September 2019, 10:04baileychic replied to a thread [SOLVED] PIC16F877A controlled 74HC595 by serial command in MicrocontrollersI can help you with your project. You really need to use a delimiter at the end of each UART command transmission which controls the output of the...3 replies | 387 view(s)
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14th September 2019, 09:12Easy peasy replied to a thread Extracting energy from gyroscope precession in Mathematics and Physicsany precession will necessarily be slow ... (?) thus the ability to get energy from it is limited. One assumes you are not talking about the...25 replies | 663 view(s)
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14th September 2019, 09:09Easy peasy replied to a thread Micro controller affected by ripple from bldc motor in Power Electronicslarger turn on resistors usually a good place to start, 47E or larger ...9 replies | 490 view(s)
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14th September 2019, 06:45It is because of using delays in the main loop where the 7 Segment display codes are also called. It is time for you to learn how to multiplex 7...3 replies | 198 view(s)
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14th September 2019, 04:13e.g. SMBJ120A x 4 on the HVDC8 replies | 293 view(s)
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14th September 2019, 01:40inrush startup SCR most likely ... turn off time of common scr = 10uS4 replies | 306 view(s)
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14th September 2019, 01:351200 V according to data sheet - for a very short time ( the applied test pulse is very short ) - the volts at the bridge depend on the amount...8 replies | 293 view(s)
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13th September 2019, 22:35Easy peasy replied to a thread Is it possible to make an IGBT to work at duty cycles up to 100%? in Power ElectronicsThat gate driver: the Semikron SKYPER 32R can be run at 100% on time for the upper IGBT, we have made many hysteretic controllers for 50kVA ...16 replies | 702 view(s)
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13th September 2019, 22:25Easy peasy replied to a thread [SOLVED] Diode performance specification in Elementary Electronic Questionsif you are using a small diode in a switching ckt and the data sheet does not give switching information, then you use it at your own risk, other...4 replies | 381 view(s)
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12th September 2019, 06:23Easy peasy replied to a thread [SOLVED] Diode performance specification in Elementary Electronic Questionsusually specified on the data sheet, e.g. 125 degC and If = 30A, and dIf/dt = 100A/us ( quite slow ) etc you have to read all the fine...4 replies | 381 view(s)
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11th September 2019, 10:26Easy peasy replied to a thread Is it possible to make an IGBT to work at duty cycles up to 100%? in Power Electronicsshort answer = yes, as long as the load can handle the current, and the IGBT, and the source ...16 replies | 702 view(s)
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11th September 2019, 06:55Easy peasy replied to a thread Flyback SMPS power MOSFET getting hot? uc3843 pwm converter in Power Electronicsyou'll find there is the same gap in the centre leg of the core too - sometimes only in the centre limb ... - - - Updated - - - if you...17 replies | 629 view(s)
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10th September 2019, 19:56Easy peasy replied to a thread Flyback SMPS power MOSFET getting hot? uc3843 pwm converter in Power Electronicsflyback Tx needs to have correct air gap, it is a storage and release transformer - all the energy per pulse is stored in the air gap ...17 replies | 629 view(s)
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9th September 2019, 22:17Easy peasy replied to a thread 3 phase 4 wire(480V) AC to 12VDC (100mA) power supply for energy metering application in Power ElectronicsTo do this properly you need to rectify the 3 phases ( and the neutral - so 8 diodes ) and then use a flyback to generate the isolated 12V ( or...9 replies | 428 view(s)
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9th September 2019, 00:35Easy peasy replied to a thread Looking for a suitable DC -DC buck conveter topology in Power Electronicsit is not isolated ....16 replies | 754 view(s)
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8th September 2019, 03:02Easy peasy replied to a thread Well regulated mains to large cities in Elementary Electronic Questions4,320,000.007 replies | 481 view(s)
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