MOC3083S-M Fairchild Semiconductor, MOC3083S-M Datasheet - Page 6

• Manufacturer Part Number: MOC3083S-M
• Description: Triac-Output Optocoupler,1-CHANNEL,7.5kV ISOLATION,SO
• Manufacturer: Fairchild Semiconductor

© 2005 Fairchild Semiconductor Corporation
MOC3081M
Typical circuit for use when hot line switching is required. In this circuit the “hot” side of the line is switched and the load connected
to the cold or neutral side. The load may be connected to either the neutral or hot line.
R
the MOC3083M. The 39 ohm resistor and 0.01 µF capacitor are for snubbing of the triac and may or may not be necessary
depending upon the particular triac and load use.
APPLIED VOLTAGE
in
0 VOLTS
is calculated so that I
WAVEFORM
800V
PULSE
Vdc
INPUT
τ RC
504 V
MERCURY
Figure 9. Static dv/dt Test Circuit
WETTED
RELAY
F
Figure 10. Static dv/dt Test Waveform
V
is equal to the rated I
CC
R
TEST
* For highly inductive loads (power factor < 0.5), change this value to 360 ohms.
R
in
C
Figure 11. Hot-Line Switching Application Circuit
1
TEST
2
3
D.U.T.
D.U.T.
FT
MOC3081M
MOC3082M
MOC3083M
OPTOISOLATORS TRIAC DRIVER OUTPUT
of the part, 15 mA for the MOC3081M, 10 mA for the MOC3082M, and 5 mA for
10 kΩ
MOC3082M
SCOPE
PROBE
X100
V max = 800 V
dv/dt =
330 Ω
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6
5
4
0.63 V max
τ RC
360 Ω
1. The mercury wetted relay provides a high speed repeated
2. 100x scope probes are used, to allow high speeds and
3. The worst-case condition for static dv/dt is established by
=
pulse to the D.U.T.
voltages.
triggering the D.U.T. with a normal LED input current, then
removing the current. The variable R
to be gradually increased until the D.U.T. continues to
trigger in response to the applied voltage pulse, even
after the LED current has been removed. The dv/dt is
then decreased until the D.U.T. stops triggering. τ
measured at this point and recorded.
504
τ RC
FKPF12N80
6-PIN DIP ZERO-CROSS
39*
0.01
LOAD
HOT
NEUTRAL
(800 VOLT PEAK)
240 VAC
TEST
MOC3083M
allows the dv/dt
RC
6/15/05
is