108
2.33 E-cap as crystal diode
Circuit 83:
Electrolytic capacitor lets direct current pass through
Setup information
Install the diode and the three electrolytic capacitors as shown in
Fig. 2.83.
The two jumper wires are next.
Check the placement on the board again and only then connect the battery.
Components required:
1 x red LED, 1 x 10 μF
electrolytic capaci-
tor, 1 x breadboard,
1 x battery, 9V battery
with clip connector
Fig. 2.83:
Electrolytic capacitor
lets direct current pass through
Experiment
If everything is wired correctly, the LED is steady lit. In this case, the electrolytic capacitor is reverse-biased.
The minus terminal of the battery connects to the positive terminal of the electrolytic capacitor. DC current
flows steadily through the electrolytic capacitor. But actually, an electrolytic capacitor is not built for this,
and for sure you would ruin it after some time. However, a quick test run won’t hurt. So, do not run this
experiment for more than 5 seconds! An electrolytic capacitor is intended to block direct current.
The circuit diagram for this experiment is shown in Chap. 3, Fig. 3.83.
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...
