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Registered Member #350
Joined: Mon Mar 27 2006, 05:14PM
Location:
Posts: 106
You don't need 200H to get a 90° phase shift. You could also use an RC circuit with an amplifier connected to the resistor to amplify the phase shifted voltage that drops across it. 200H are btw. cheap if you don't care about resistance. The primary coils of small transformers have a very high inductance. Can be several hundred H in some cases. But the resistance is quite high.
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
The original protocol seems to work at 60Hz regardless of the voltage in the transformers, so at least I have a buildingblock for the rotating electrical field....
Ran a simulation (Yes I could have run it in LTSpice but I was lazy and its 1:20AM) - seems to be nearly 90deg shifted.
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
So a bit of a necro here, I finally got the foam needed for the stuff, turns out its resistance is way too high and I might need to apply some treatment to it to get its resistance down. In the interest of saving time I've been thinking about graphite lubricant spray.
Does anyone know if it 1 - has no organic residue after drying, or has no organic carrier (I'm afraid the chemicals might harm the beetles, or simply dissolve the foam on application). 2 - is electrically conductive, or if it is encapsulated to prevent conductivity?
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Building a non-lethal insect shock mat for bio research, a few questions
