Delay circuits are presently in wide usage for delaying the
switching on of alarm systems. Their working principle is based on
the time involved in the charging and discharging of capacitors,
which the students have already dealt with. An increasing or
decreasing capacitor voltage brings the transistor to a conductive
or to a blocked state, as soon as the base-emitter voltage reaches
the appropriate threshold value or goes below it.
Determine the factors on which a delay in the switching of a
transistor is dependent.
| 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
|
2
|
|
Change-over switch module, SB
|
05602-02
|
1
|
|
Socket module for incandescent lamp E10, SB
|
05604-00
|
1
|
|
NPN transistor module BC337, SB
|
05656-00
|
1
|
|
Straight connector module with socket, SB
|
05601-11
|
2
|
|
Angled connector module with socket, SB
|
05601-12
|
2
|
|
Resistor module 100 Ohm, SB
|
05613-10
|
1
|
|
Resistor module 10 kOhm, SB
|
05615-10
|
1
|
|
Resistor module 47 kOhm, SB
|
05615-47
|
1
|
|
Capacitor module 47 µF non-polar electrolytic, SB
|
05645-47
|
1
|
|
Capacitor module 470 µF non-polar electrolytic, SB
|
05646-47
|
1
|
|
Straight connector module, SB
|
05601-01
|
4
|
|
Angled connector module, SB
|
05601-02
|
2
|
|
T-shaped connector module, SB
|
05601-03
|
2
|
|
Filament lamps 12V/0.1A, E10, 10
|
07505-03
|
1
|
|
Connecting cord, 32 A, 500 mm, red
|
07361-01
|
2
|
|
Connecting cord, 32 A, 500 mm, blue
|
07361-04
|
2
|
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