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www.sparkbangbuzz.com/els/photocell-el.htm

Sep 12, 2003 ... To make this photocell, you simply heat a small area on piece of thin copper sheet, red hot in a propane flame, for a minute or so and let it cool.

www.instructables.com/id/Photocell-tutorial

Photocells a.k.a CdS cells, photoresistors, LDR (light dependent resistor). ... Otherwise, just make sure you try different ranges, between 1M ohms and 1K ohms ...

.ask.com/youtube?q=How+To+Build+A+Photocell&v=7KuedLNZ5tk
Nov 7, 2011 ... This is a home made photocell theremin I constructed! ... How to make a Van de Graaff generator (electrostatic generator) - Duration: 9:14.

www.ehow.com/how_6148421_make-photo-cell.html

How to Make a Photo Cell. Photocells are used in watches, traffic lights, alarms and much more. Photocells have many different purposes and continue to be ...

mfleisig.wordpress.com/2011/03/06/homemade-photocell

Mar 6, 2011 ... I took out a little time today to try making a homemade photocell. This is not a photoresistor--it actually demonstrates the photo-electric effect.

makezine.com/2009/11/17/homemade-transistor-from-a-photocel

Nov 17, 2009 ... Like many of us, Nyle Steiner has long aspired to building a homemade transistor . While considering possible way to achieve this, he stumbled ...

www.evilmadscientist.com/2007/a-simple-and-cheap-dark-detecting-led-circuit

Dec 12, 2007 ... ... sometimes called a photocell or LDR, for “light-dependent resistor. ... In this article we show how to build a very simple– perhaps even the ...

www.explainthatstuff.com/how-photoelectric-cells-work.html

Nov 29, 2016 ... When you shine light on the top layer, electrons leap up from the bottom layer to the top, making a voltage that can drive current through an ...

www.sparkfun.com/products/9088

A photocell changes (also called a photodetector, photo resistor, CdS or ... These little sensors make great ambient light triggers (when light in the room turns on, ...

www.electronics-tutorials.ws/io/io_4.html

Light energy falls on to two semiconductor materials sandwiched together creating a voltage of approximately 0.5V. The most common photovoltaic material is ...