MOC3031M
MOC3032M
6-PIN DIP ZERO-CROSS
OPTOISOLATORS TRIAC DRIVER OUTPUT
(250/400 VOLT PEAK)
MOC3033M MOC3041M MOC3042M MOC3043M
R1 D1
1
VCC
6
Rin
2 MOC3031M
MOC3032M
5
MOC3033M
3
4
180 Ω
115 VAC
SCR
SCR
R2
D2
LOAD
Figure 14. Inverse-Parallel SCR Driver Circuit
(MOC3031M, MOC3032M, MOC3033M)
Suggested method of firing two, back-to-back SCR’s with a Fairchild triac driver. Diodes can be 1N4001; resistors, R1 and R2, are
optional 1 k ohm.
R1 D1
1
VCC
6
Rin
2 MOC3041M
MOC3042M
5
MOC3043M
3
4
360 Ω
240 VAC
SCR
SCR
R2
D2
LOAD
Figure 15. Inverse-Parallel SCR Driver Circuit
(MOC3041M, MOC3042M, MOC3043M)
Suggested method of firing two, back-to-back SCR’s with a Fairchild triac driver. Diodes can be 1N4001; resistors, R1 and R2, are
optional 330 ohm.
Note: This optoisolator should not be used to drive a load directly. It is intended to be a trigger device only.
www.fairchildsemi.com
6 OF 9
8/06/01 DS300256