India Rail Info Software Download For Pc here. Hi folks, so I built an smps from a schematic found on the internet. It works that far it's okay but it worked when i had a 70w load light bulb attached to the output, after i tried going with a 500w bulb things just went bananas aka exploded, everything in the chain was dead and cracked open, both IRFP460 the IR2110 and also the SG3525 was dead as I later found out when replaced all other parts and still got not oscillation driving the IR2110. Now i have had the same problem with other simple design smps, i guess when their simple their just not reliable enough under bigger loads.sadly they arent as robust and reliable as the age old transformers for mains. Now a few question, could the problem be the feedback loop via the octocoupler,maybe it senses too low of a voltage and increases the frequency or duty cycle of the SG3525 too much and the transformer due to back emf creates some spikes in the process which killed my mosfets and the ic's driving them down the line? The other option could be innapropiate transformer core or something along those lines?
Hi folks, so I built an smps from a schematic found on the internet. It works that far it's okay but it worked when i had a 70w load light bulb attached to the output, after i tried going with a 500w bulb things just went bananas aka exploded, everything in the chain was dead and cracked open, both IRFP460. Break In 2 Electric Boogaloo Download Itunes Read more. Press Gothic Font Rar Read more. Sg3525 Ir2110 Smps Raritan Read more. OLV Mediterranean Foods, 123 Name Street, Chicago, IL 54321. 1 Applies to shipping within Sweden. Information about shipping policies.
Also even though in the feedback loop the zener i had was rated 82 volts, i still got only +-70 or 140 v DC out from the secondary, why is that shouldn't the octocoupler work with the SG3525 error amplifier as to sense the voltage and keep approximately 4v above the feedback zener voltage by either increasing the frequency or duty cycle which one i dont know? Ok my bad, I was wrong, yesterday i measured across the wire leads coming out of the lamp, turns out the very bulb itself had a bit corroded contacts, no problem for 220 volts but when measuring with multimeter they showed wrong resistance. I took the bulb out, it's a 230 volt 500w bulb by the way and ' ups' it measures 10 ohms, so yeah no wonder why the mosfets went absolutely 'bananas':D so I guess I should put some kind of a dimmer thyristor or something in series when attaching such a load, or maybe you know of some higher current rated devices which I could swap into the IRFP460 using now? I mean something that could work well in this design just with higher current ratings? I guess i have to keep the gate capacitances moderate I just don't know which devices are fine by the IR2110 and which could bee to 'heavy' for the IR2110 to drive?
Yeah, the 10 ohm load at startup gave about 14 amps of load current and with about 140v DC after rectifier that puts the starting power at nearly 2KW, so my IRFP460 went dead. The SG3525 that drives the IR2110 in my circuit has a soft start circuit and when i used the little bulb i saw it in action as the response was slow and delayed the bulb kinda didint shine at full from the start took a second or two. The SG has a capacitor for this. I did a search in my local stores provided device list and the best I could come up with was either IXTH24N50L or IXFH24N50.
The originals mentioned in the schematic cost too much but these come very close or are even similar to the originals.anyway they are more powerful than the IRFP460. I will look at fairchild too.
Few days ago, GoHz made a 24V 2000W power inverter in home, sharing some design schematics and circuit diagrams. Power inverter testing. The picture was taken in short-circuited. Output waveform. The SPWM accuracy of EG8010 was not high enough waveform, so the inverter output was not good enough as. The dead zone time was a bit long (1uS), where the zero-crossing point did not look good, in order to ensure the safety of the tube, GoHz did not adjust it.
This was a full load test on the power inverter, two water heaters, about 2000 watt, the water was boiling completely. Maximum connected load was for approx 10 seconds, due to the DC power supply limitation (paralleling a large DC battery and two small batteries), GoHz did not continue test it. Adjust the inverter power limitation potentiometer, limit the maximum power at 2500 watt, (a little greater than 2500 watt), the power inverter works for less than two seconds before it turn off the output. Short circuit protection is also set about two seconds to turn off the output.
Due to the EG8010 programming reason, the power inverter will continuous work after a few seconds if the power supply is not cut off. This power inverter has a good starting ability, it only takes about 1 second for two parallel 1000 watt solar lamps. This inverter is designed to power about 2200 watt, the headline of this paper is 2000 watt is because the DC power supply maximum output current is 100A, so GoHz tested it at 2000 watt, for more than 12 hours testing, it can work well at, there would be no problem for the actual load at 2500 watt. This is the foreline tube D level waveform when the power inverter was in 2000w full load. Expanding the foreline tube D level waveform when the inverter in 2000w full load. This is the power inverter in no-load power consumption test. It can be seen from two multimeter, no-load power consumption is 24.6 * 0.27 = 6.642W, no-load consumption is relatively low, it can be used for photovoltaic, car batteries and other new energy systems.