| Electronics > Projects, Designs, and Technical Stuff |
| What to do with a huge-ass TRIAC? |
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| technix:
--- Quote from: capt bullshot on November 01, 2018, 01:51:55 pm --- --- Quote from: technix on November 01, 2018, 01:41:10 pm ---What is the ratings on that one? Megawatt scale? --- End quote --- http://ixapps.ixys.com/datasheet/mcd200-16io1.pdf 216A DC continuous / 1600V, 8kA surge. More interesting for capacitor discharging is the I2t value, this gives you some hint how much energy this thing can absorb in a single pulse. Sometimes a limit for "explosive disintegration" is specified 8) At best a "medium size" for real power electronics ... Might be used for the line rectifier of a 300kW inverter / VFD. --- End quote --- How to understand that I2t value? |
| capt bullshot:
--- Quote from: technix on November 01, 2018, 01:57:32 pm ---How to understand that I2t value? --- End quote --- Same as for fuses. We call it "Schmelzintegral" in German, it's the integral of current² over time flowing through the device. If the specified value is exceeded in a single pulse / short enough time, the device fails / the fuse trips. Usually the I²t for fuses is larger than for (comparable) semiconductors, so the semiconductor device protects the fuse. The fuse is still there, to limit collateral damage. |
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