tca280b Hendon Semiconductors, tca280b Datasheet - Page 12

• Manufacturer Part Number: tca280b
• Description: General Purpose Triggering Circuit
• Manufacturer: Hendon Semiconductors

Fig.7 Typical application of the TCA280B as a static switch for resistive loads. The arrangement gives triggering around the zero crossings of
the mains voltage. The values shown for R
AC mains
V S
− U
13
RX2
BYX10
SUPPLY
Rd
10 kΩ
(5.5 W)
DC
16
V EE
11
V CC
220 µF
(16 V)
C1
d
, R
G
ENZ
and C1 give a gate current I
PW
R1
180 kΩ
(0.5 W)
12
1
DETECTOR
CROSSING
ZERO-
t
w
15 kΩ
= 160 s typical.
2
QZ
R2
V control = 0−10 V
IC−
IC+
R5
56 kΩ
75 kΩ
22 kΩ
6
5
R3
R6
DIFFERENCE
GT
AMPLIFIER
= 100 mA typical at V
3
RX1
100 kΩ
R4
4
7
QC+
QC−
INHA
IA
8
9
AMPLIFIER
OUTPUT
GT
= 2.5 V and a trigger pulse duration
10
82 Ω
QA
R G
Fig-7-cct
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