Philips Semiconductors
Proportional-control triac triggering circuit
Product specification
TDA1023/T
Table 1 Adjustment of proportional range and hysteresis. Combinations of resistor values giving
hysteresis > 1⁄4 proportional range.
Proportional range
Proportional range resistor
Minimum hysteresis
Maximum hysteresis resistor
R5
R4
mV
kΩ
mV
kΩ
80
open
20
open
160
3.3
40
9.1
240
1.1
60
4.3
320
0.43
80
2.7
400
0
100
1.8
Table 2 Timing capacitor values CT
Effective DC value
Marked AC specification
Catalogue number(1)
µF
µF
V
68
47
25
47
33
40
33
22
25
22
15
40
15
10
25
10
6.8
40
Note
1. Special electrolytic capacitors recommended for use with the TDA1023.
2222 016 90129
- - 90131
- 015 90102
- - 90101
- - 90099
- - 90098
handbook, halfpage
RX
16
14 VCC
STABILIZER 11 VZ
13
VEE
MBA483
Fig.3 Internal supply connections.
May 1991
7