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Idiomas disponibles
Idiomas disponibles
•
Only change circuits with power supply
equip-ment switched off.
Set up the circuit as in fig. 5.
•
•
Place the coils side by side as near one
another as possible.
•
Apply an anode voltage U
•
Observe the undamped oscillations on the
screen of the oscilloscope.
•
Rotate one of the coils to demonstrate that
that the occurance and amplitude of the os-
cillations depends on the relative position of
the two coils.
V
0 ... 500 V
U
A
I
A
Fig. 1 Demonstration of anode current and determination of the polarity of the charge carriers
Fig. 2 Triode characteristics
of about 300 V.
A
DC POWER SUPPLY 0 ... 500 V
V
V
0 ... 50 V
0 ... 8 V
U
U
G
F
•
Touch the coils only at the insulated parts!
•
Vary the anode voltage U
500 V and observe that the amplitude of the
oscillations does not increase in direct pro-
portion to U
•
Carry out an experiment of the same kind
without capacitators so that the capacitance
of the oscillating circuit is formed only by the
self capacitance of the conductor.
V
0 ... 12 V
3
between 100 and
A
.
A
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