2.CONNECTION
12
2-3. Output Connection
2-3-1. Equivalent Circuit
F159 uses non-polar MOS FET relays for signal output.
Spark arrester
Load
Spark arrester
DC source
Varistor
Load
AC source
Relay
Vext
F159
Inside
Vcc
Vceo=30V
（
max
）
Ic =120mA
（
max
）
・
User must provide an external power unit (Vext <= 30
VDC) to drive the output relay.
・
Do not short circuit the load (such as a relay coil). This
may damage the output relay.
・
Use surge absorbing devices appropriately in the relay
circuit (see the diagram above) to suppress surge
voltage from occurring. These devices are effective to
reduce noise-related problems and to extend the relay
life.
Output data MOS FET relay
0
OFF
1
ON
