Diodes - Maker Factory ELECTRONICS EXPERIMENTS BOX Manual

1.1.3 Diodes

Silicon diodes are common; they allow current to flow only in one direction. Schottky diodes do the same,
but their threshold voltage is lower. Light-emitting diodes (LEDs) transform electricity into light. They come
in different colours.
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Fig. 1.4: The component symbol is on the left and for information, the
circuit diagram symbol of the J111 FET-Transistors on the right; the experi-
mental package contains one only.
Fig. 1.5: The component symbol is on the left and for information, the
circuit diagram symbol of the PT331C phototransistor on the right; the
experimental package contains one only.
Fig. 1.6: The component symbol is on the left and for information, the
circuit diagram symbol of the red LED on the right; the experimental pack-
age contains one only.
Fig. 1.7: The component symbol is on the left and for information, the
circuit diagram symbol of the green LED on the right; the experimental
package contains one only.