baileychic
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Today, 13:07I replaced the Mosfets to IRFP250N. For PWM signal > 50 kHz the output signal is getting distorted and also the HOx and LOx signals. What changes...23 replies | 397 view(s)
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Today, 08:34the above statement tends to contradict the other statement you have made:16 replies | 386 view(s) -
Today, 07:49Here is the simulation output. I have not yet built the hardware. - - - Updated - - - Updated file. VSx probes added. See the graphs and tell...23 replies | 397 view(s)
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Today, 07:32Okay, increased the C1, C4 capacitors to 22uF but no change in output. I am using 50% duty PWM. Should I increase the duty to say 90% to get high...23 replies | 397 view(s)
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Today, 02:37If it is turning electricity into light - then it is not just, or all, black body radiation - there will be some black body radiation from the...16 replies | 386 view(s)
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Yesterday, 23:06That was a mistake. I changed them to 10R but the output voltage goes to max 9V now. HOx and LOx voltgaes are fine and they are 36V and 12V...23 replies | 397 view(s)
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Yesterday, 22:31Correct, and current goes up as volts go down ( very counter intuitive ). Due to IR drop in the carbon rods - there will be a small element...16 replies | 386 view(s)
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Yesterday, 20:09From your circuit in post #1 you use 24V DC and 0V as GND and so I thought the output signal varies between 0V and 24V. Edit: My circuit works...23 replies | 397 view(s)
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Yesterday, 19:34Here it is a quick circuit that I made. Not sure if 8-bit PIC can generate 300 kHz PWM. Maybe you need dsPIC to generate a 300 kHz PWM...23 replies | 397 view(s)
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Yesterday, 19:03Is it AC sine wave output that you want? If yes, is it 300 kHz sine wave output? In Inverters the PWM of SPWM will be say 7 kHz to sometimes 300...23 replies | 397 view(s)
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Yesterday, 18:44You need SPWM to get Sine wave AC output from Bridge. Can be done but what max load current you want? 300 KHz frequency will need a very fast...23 replies | 397 view(s)
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Yesterday, 18:41Refer datasheet for device operating frequency. 24V from 24V means no transformer in your design as load but what is the inductive load? Can it...23 replies | 397 view(s)
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Yesterday, 18:39In Proteus the weight value is stable but in hardware, the weight is fluctuating because the no-load value is fluctuating. In video, you can see...33 replies | 1625 view(s)
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Yesterday, 18:12If Gate voltage is lower than Drain then it will turn On. For example Drain is 24V and Gate is 12V then MOSFET will turn On. There is a difference...23 replies | 397 view(s)
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Yesterday, 13:08What are you trying to drive from the H-Bridge? Motor? If yes, what is the voltage and current rating of the motor?23 replies | 397 view(s)
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Yesterday, 09:57The original carbon arcs used AC and a ballast choke to give an approx constant RMS current - the arc is a plasma in fact - and there were numerous...16 replies | 386 view(s)
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Yesterday, 09:40Easy peasy replied to a thread LLC converter with F(sw) > upper resonant frequency in Power Electronicsit's simply wrong ... however you can get hard commutation of the o/p diodes for Fsw > Fres if the leakage is too high ...1 replies | 97 view(s)
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Yesterday, 08:58Auto-calibration method is working but I am getting fluctuating weight values (rapid) as my no load counts (value) is fluctuating. What should I do...33 replies | 1625 view(s)
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Yesterday, 08:33Easy peasy replied to a thread Electronic Load Circuit for 380 Vdc (2A to 3A) Power Supply in Service Manuals, Requests, Repair TipsI'm just saying that due to extra "third breakdown" effect of fets run in linear fashion at high voltage ( they must be seriously de-rated ) -...5 replies | 187 view(s)
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Yesterday, 08:28neg supply not needed for offset nulling ckt on LM358/324 ...7 replies | 259 view(s)
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Yesterday, 06:41baileychic replied to a thread [SOLVED] Is this a good circuit that I have designed? in MicrocontrollersOkay, I will increase the 12V to 15V for the big display driver. I have not yet built the hardware. I was just testing it in Proteus.5 replies | 217 view(s)
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Yesterday, 05:19Easy peasy replied to a thread SMPS PFC+LLC/Flyback 24V 100W low THD cool thermals reference design? in Power ElectronicsFor 24V 100W try a FAN9611 running a dual interleaved flyback, low RFI , easy to build and test, just 2 x flyback Tx at 50W each, 2 x 800V...1 replies | 100 view(s)
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Yesterday, 05:15An LM324 / LM358 can be used to measure a neg shunt voltage - to 300mV below 0v on a single supply, because of offset etc need to add an...7 replies | 259 view(s)
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Yesterday, 05:06Easy peasy replied to a thread Electronic Load Circuit for 380 Vdc (2A to 3A) Power Supply in Service Manuals, Requests, Repair Tips1200W, at 400V, beware the extra breakdown effect for mosfets above 60V, I expect you will need to use 250W fets, at 30W each, giving 40...5 replies | 187 view(s)
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Yesterday, 00:17Easy peasy replied to a thread [SOLVED] Stacking diodes for high voltage rectification in Elementary Electronic Questionswww.ppmpower.co.uk/products/diodes/axial-lead-low-current-diodes/ are what you are seeking - a 1 min google search ...27 replies | 669 view(s)
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21st August 2019, 23:17Easy peasy replied to a thread [SOLVED] Stacking diodes for high voltage rectification in Elementary Electronic QuestionsThe problem is that for the diodes you seek to use - the source must supply a lot of reactive power as well as the real power to provide the DC to...27 replies | 669 view(s)
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21st August 2019, 13:58You can put voltmeters across 1. drain and source of each mosfet and 2. across collector and emitter of each transistor in Proteus and see...23 replies | 397 view(s)
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21st August 2019, 13:46baileychic replied to a thread [SOLVED] Is this a good circuit that I have designed? in MicrocontrollersOkay, All is well now. Finished the project using one MAX7219 and tested. Big display is this one....5 replies | 217 view(s)
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21st August 2019, 08:39baileychic replied to a thread [General] Controlling PictureBox image using serial communication in MicrocontrollersCheck if your PC's baud rate settings in Control Panel > Device Manager > COM Ports > Baudrate settings are the same as that in your VB application....1 replies | 93 view(s)
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21st August 2019, 07:22Easy peasy replied to a thread [SOLVED] Stacking diodes for high voltage rectification in Elementary Electronic Questionsif you avalanche these diodes at 200kHz, the solder will melt ...27 replies | 669 view(s)
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