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Led Diode Circuit
how to design a schmitt trigger switch using 1 bjt, 1 op-amp ua741 and single power supply of 12v?
the schmitt trigger will detect input signal between 4v and 8v, and will be used to control a relay via a transistor which operate as a switch. the transistor will on the relay from off state when the input signal decreases to 4v and will off the relay from on state when the input increases to 8v. the relay can be substituted by a light emitting diode (LED), that is, when the relay is on, the LED will light up. please give me the example of the circuit.
http://www.ibiblio.org/obp/books/socratic/output/opamp4.pdf
its an opamp used as a comparator with hysterisis.
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LightEmitting Diode $68.51 Light emitting diode. Oleg Losev, List of LED failure modes, Organic light emitting diode, Miniature light emitting diode, Solid state lighting, LED lamp, LED power sources, Electrical polarity of LEDs, LED circuit, LED as light sensor Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 74 Publication Date: 2009/10/08 Language: English Dimensions: 5.98 x 9.01 x 0.17 inches |
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Krist's final year project-Organic Light emitting diode
Electrical Circuit Question?
I want to make a blinking LED circuit. Is there any way to do it with resistors, capacitors, inductors, simple diodes/the LED only?
Awch dear, you can't
What you need is a flasher relay...
Mandy
www.freeelectricityformula.com
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