Provided that the students are familiar with the characteristics
of photoresistors and the construction and functioning of
electromagnetic relays, this would be a good opportunity for the
students to come up with a constructive theoretical answer to the
initial question previous to the experiment and then carry out the
experiment to confirm their hypothesis.
The second part of the experiment is not essential to understand
the functioning of twilight switches. It is, however, recommended
as a starting point for discussing further applications for relays
and for reinforcing the students' knowledge of various applications
(as an opening and a closing contact).
Construct a model for automatic street lighting (twilight
switch) using a relay and a photoresistor.
| Materiallist (Excerpt) |
Product |
Amount |
|
Power supply 0...12 V DC/ 6 V, 12 V AC, 230 V
|
13505-93
|
1
|
|
Relais module 6 V, SB
|
05674-00
|
1
|
|
On-off switch module, SB
|
05602-01
|
1
|
|
Socket module for incandescent lamp E10, SB
|
05604-00
|
1
|
|
Interrupted connector module, SB
|
05601-04
|
1
|
|
Straight connector module with socket, SB
|
05601-11
|
2
|
|
Angled connector module with socket, SB
|
05601-12
|
1
|
|
Photo-resistor module LDR 03, SB
|
05632-00
|
1
|
|
Angled connector module, SB
|
05601-02
|
2
|
|
Filament lamps 12V/0.1A, E10, 10
|
07505-03
|
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
|
|
Connecting cord, 32 A, 250 mm, red
|
07360-01
|
1
|
PHYWE on YouTube | contact form | contact sales worldwide | service hotline
