U2101B
| Model | U2101B |
| Description | Relay Timer |
| PDF file | Total 9 pages (File size: 133K) |
| Chip Manufacturer | TEMIC |
U2101B
330 nF/
400 V
C1
3
VRef
C3
4.7
m
F
GND
5
Voltage
limitation
Timer 1
1024 Tosc1
–VS
6
Relay
24 V
Relay
driver
7
Control logic
Window adjustment
RC oscillator 1
BZX85/
C20
D1
C2
47
m
F/
35 V
4
–5V
Voltage
monitoring
4x
BYT56
Vmains
230 V
X
Figure 2. Block diagram with typical circuit
N
Noise
suppression
Rosc2
ON / OFF 1024 Tosc2
fosc2
8
Cosc2
RC oscillator 2
Timer 2, 3, 4
Out (ON): 0.1 VRef
Out (OFF): 0.5 VRef
Enable
schmitt trigger
ON:
0.6 VRef
9
R2
Sensor 2
TELEFUNKEN Semiconductors
Rev. A1, 30-May-96
95 9737
~
2 (9)
Ra
1
Rb
R1
2
Sensor
1
–
OP 2
OP 1
–
14
+
+
VRef
15
40 k
W
16
60 k
W
Feedback
circuit
13
12
fosc1
Rosc1
Cosc1
11
R3
Trigger
window
ON:
4 T osc2
Restart ON: 64 Tosc2
10
R4
L
390
W
Load
