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This would probably help you understand. The circuit comfiguration I think you are looking for is in here.
**broken link removed**
Look to page 55
Good luck
Oook,
The truth is unfortunatley these guys are right. You can't get something for nothing. When you realize that the motion of your system undergoes friction you will be on the road to understanding. Even if the system was 100% efficient you could never extract any useful energy out without...
Hi Gamini,
The information I am getting is limited right now. I will pass along anthing I find and would appreciate anything you can offer as well.
Thanks
dave
I Think I understand now. This cct uses the full wave dc to produce a zero cross detect. as the dc voltage drops to zero (at the half cycle) it develops a signal to your controller. This is what is used to develop a delay signal to the moc to turn on the triac. This can also work fine.
dave
alina,
bitwixt (Brian) gave you a great expanation (thanks). Without two of them you will not be able to develop the zero cross timing pulse. Can you get a second in time for your project? They are inexpensive and availible.
dave
Yes I think that is reasonable. However if I were you I would make the 8K, 50K instead. Some of the cells look like they are a min collector current of 0.2 ma. Wouldn't hurt anyway.
That will depend on the photocell you use and how much light will create how much current draw through R1. I assume it is a photo conductor. So when light hits the cell it conducts. The amount of current it conducts will depend on how much light hits it. Many of these cells are actually rated...
No worries. Hall effect is a simple device that can be activated by a magnetic field. The magnet does not need to be moving, just present. The circuit you uploaded seems fine for the optical track.
Yes I have done something similar. The device I used was a module with transmitter and reciever led pair built together. A reflective surface was used to bounce off. You might consider using a hall effect and a magnet also. This too would require no power on the tiller. Just a magnet...
If you use three devices to distribute the load, you will need to disipate about 30Watts per transistor at full current of 40 amps. Make sure you have good heat sink for each that will keep them all within their respective operating temperature.
dfullmer
One reason may be the input voltage from the transformer may be high enough such that the drop across each transistor may be very high. At current the amount of heat that will be disipated by each transistor current times the voltage drop equal watts disipated by each transistor. The wattage...
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