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October 3, 2013
News - Enginursday: Yeah, I foun… |
about 2 months ago
Gear Reduction? More teeth on the primary means it could spin slower and turn the output faster. So at 12k rpm on the output wouldn’t that imply 3k rpm internally? If the turbine had less teeth then the output then it would need to spin at 48k rpm to create the 12k rpm. This is 4:1 Primary to Secondary or Driver to Driven right because if it is then the math must be wrong.
News - The Science of Licking a … |
about 3 months ago
What you have got to remeber for AC circuits is that this calculated current is an RMS, which means Root Mean Square, value. So 220V/100kOhhm would be 2.2 mA like you calculated above but that is the average RMS current that will pass through your body. To get the real, known as the peak-to-peak, current that will pass through your body you must take this value and multiply by 2sqrt(2). Doing this will give you roughly 6.3mA which is in the pain region mentioned above. This is the peak maximum current that will pass through your body during every period or cycle.
Your second question of why low voltages can be dangerous too is because the resistance of your skin can be lower one day than it is another (based on how dry/wet it is). The amount of current your body will draw will be larger if the resistance of your skin is lower.
Product SEN-11859 |
about 4 months ago
If its truly off by a factor of 10 you can take the variable and multiply it by a factor of 10. For example lets say you have a floating point variable named temp:
float temp; //floats provide more accuracy
temp=“some math to get to temp goes here * 10;
and then print it out. This should correct the temperature output.
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