The MOC306X-M and MOC316X-M devices consist of a GaAs infrared emitting diode optically coupled to a monolithic silicon
detector performing the function of a zero voltage crossing bilateral triac driver. They are designed for use with a triac in the interface of logic systems to equipment powered from 115/240 VAC lines, such as solid-state relays, industrial controls, motors, solenoids and consumer appliances, etc.
1. 100x scope probes are used, to allow high speeds and voltages.
2. The worst-case condition for static dv/dt is established by triggering the D.U.T. with a normal LED input current, then removing
the current. The variable vernier resistor combined with various capacitor combinations allows the dv/dt 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
SELECT
V
DRM/VRRM
X100 PROBE
DIFFERENTIAL
PREAMP
MOUNT DUT ON
TEMPERATURE CONTROLLED
Cµ PLATE
1
2
X100 PROBE
6
DUT
4
dV
dt
VERNIER
20k
2W
100
2W
2W
82
is measured at this point and recorded.
RC
27
2W
0.33 1000V
470pF
0.001
0.005
0.01
0.047
1000
10 WATT
WIREWOUND
1 MEG2W EACH
POWER
1.2 MEG
2W
0.047
1000V
TEST
1N914
20V
56
1000
f = 10 Hz
PW = 100 µs
50 Ω PULSE
GENERATOR
2W
ALL COMPONENTS ARE NON-INDUCTIVE UNLESS SHOWN
Figure 9. Circuit for Static dV Measurement of Power Thyristors
1/4W
1N967A
18V
dt
BASIC APPLICATIONS
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
is calculated so that I
in
mA for the MOC3061-M, 10 mA for the MOC3062-M, or 5 mA for
the MOC3063-M. The 39 ohm resistor and 0.01 µF capacitor are
for snubbing of the triac and is often, but not always,
necessary depending upon the particular triac and load
used.
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.
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO
ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME
ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;
NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, and (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in a significant injury of the user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.