The resistance value of an NTC resistor is dependent on the
temperature. In this experiment, a circuit is examined in which a
transistor is triggered with an NTC resistor and switches
a filament lamp on and off.
The NTC resistor, the potentiometer andvthe 10 k
? resistor form a temperature dependent
potential divider, from which the control voltage of a transistor
is picked up. In order to realise both a light circuit and a dark
circuit without a relay, the NTC resistor is inserted at
various positions in the potential divider.
Examine how a transistor can be triggered with a
temperature dependent resistor to switch a lamp.
| Materiallist (Excerpt) |
Product |
Amount |
|
Power supply 0...12 V DC/ 6 V, 12 V AC, 230 V
|
13505-93
|
1
|
|
Multi-range meter, analogue
|
07028-01
|
1
|
|
Hot/cold air blower, 1800 W
|
04030-93
|
1
|
|
Potentiometer module 10 kOhm, SB
|
05625-10
|
1
|
|
Socket module for incandescent lamp E10, SB
|
05604-00
|
1
|
|
Interrupted connector module, SB
|
05601-04
|
1
|
|
NPN transistor module BC337, SB
|
05656-00
|
1
|
|
Battery holder module (C type), SB
|
05605-00
|
1
|
|
Junction module, SB
|
05601-10
|
2
|
|
NTC-resistor module, SB
|
05630-00
|
1
|
|
Resistor module 1 kOhm, SB
|
05614-10
|
1
|
|
Resistor module 10 kOhm, SB
|
05615-10
|
1
|
|
Straight connector module, SB
|
05601-01
|
2
|
|
Angled connector module, SB
|
05601-02
|
2
|
|
T-shaped connector module, SB
|
05601-03
|
4
|
|
Filament lamps 4V/0.04A, E10, 10
|
06154-03
|
1
|
|
Flashlight, w/o battery,medium
|
08164-00
|
1
|
|
Connecting cord, 32 A, 500 mm, red
|
07361-01
|
2
|
|
Connecting cord, 32 A, 500 mm, blue
|
07361-04
|
2
|
|
Battery cell, 1.5 V, baby size, type C
|
07922-01
|
1
|
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