Light pen connector circuit diagram

Published:2011/9/15 1:27:00 Author:Rebekka | Keyword: light pen connector | From:SeekIC

If you put any high-quality photodiodes in a waste barrel and take it to fluorescence-screen display, you can pick up optical signals. If the diode is put into plastic lens, you need to sand Lens side by emery cloth to make the light angle. The set is desgned for matching VDM-1 display terminal. When you move the light pen by the face of the screen, the cathode ray oscilloscope can be used for monitoring the outcoming signal of the circuit. In the dark space of the face of the screen, it produces 5V DC level; in the bright region, the level will fall down.



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