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PDF U490B Data sheet ( Hoja de datos )
| Número de pieza | U490B | |
| Descripción | One-Shot Phase Control | |
| Fabricantes | TEMIC Semiconductors | |
| Logotipo |  |
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One-Shot Phase Control
U490B
Description
The monolithic integrated bipolar circuit, U490B, is a
one-shot power control circuit, designed to control the
thyristor which is mainly used in electric stapler devices.
The IC is preferred to realise a one-shot phase control,
where any phase angle and thus any intensity of the load
voltage is adjustable.
After successful triggering and the following delay time,
an ignition pulse at the output is released. A further trig-
gering is only possible after the elapse of the delay time.
Features
D Phase controlled thyristor ignition
D Triggering with time delay
D Repetition time delay
xD Supply current 2 mA
D Mains supply via resistor
Applications
D Electric stapler devices
Package: DIP8, SO8
L
XVmains
230 V
C1
47 mF/
10 V
N
D1
1N4007
R1
R3
24 kW/
2W
220 kW
C3
1.5 nF
8 VS
3
4 Supply
GND stage
Sync.
Start
delay
Repetition
delay
Phase control
POR
Control
input
Ramp
56
S1
95 10866
Trigger
control
2
C2
47 nF
R2
220 kW
Load
7
Output
stage
R7
33 W
C7
22 nF
C5
150 nF
[ R5
68 kW
47 kW
C6
150 nF
D2
R4
220 W
C4
X47 nF/
250 V
Figure 1. Block diagram with external circuit
TELEFUNKEN Semiconductors
Rev. A1, 29-May-96
1 (6)
1 page  
Dimensions in mm
Package: DIP8
U490B
Package: SO8
94 8873
TELEFUNKEN Semiconductors
Rev. A1, 29-May-96
94 8862
5 (6)
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet U490B.PDF ] | |
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