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Path Led Light
How do I create an obstruction of optical sensors using infrared?
I have an infrared LED and an infrared receiver (which looks like an LED). Now, my idea is to create an obstruction sensor such that when the obstruction is removed from the path of light from the IR LED, the sensor must collect light LED and must seize the current (for a transistor, which then opens to an electromagnetic power). can u please help on how to do this. Also, please help me information on the supply voltage and polarity. If (and only if) you do not feel my questions, please see this: http://www.simplemotor.com/oimotor.htm I'm looking to build the model in the link above but I have a optical switch. So I create my own substitute for it, with infrared LEDs and photodiodes. Can u please tell me how I can make this happen?
You may be able to continue with a very simple circuit like on this page: http://www.blogger.com/feeds/2807986538601445910/posts/default Add another resistance in the opamp output to excite the base of the transistor and that's it. Even easier are Darlingtons ... just use two, three or four transistors to make a super-beta transistor (ie, a device with very high current gain): http://www.zen22142.zen.co.uk/Design/config2.htm Each transistor is added about a factor of 10-100. A lot of gain with three or four.
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