12
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.
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.
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.
Summary of Contents for ELECTRONICS EXPERIMENTS BOX
Page 4: ......
Page 265: ...267 Fig 3 56 Cir cuit 56 Audio limiter Fig 3 57 Circuit 57 Amplifier for a storm detector...
Page 269: ...271 Fig 3 64 Circuit 64 Stabilizer for 1 9 V Fig 3 65 Circuit 65 Stabilizer for 2 5 V...
Page 275: ...277 Fig 3 80 Circuit 80 Quiztimer 30 seconds Fig 3 81 Circuit 81 Handy diode tester...
Page 315: ...317 Fig 3 179 Circuit 179 HF generator 150 kHz Fig 3 180 Circuit 180 HF generator 420 kHz...
