Chapter2 Connection
Manual of NCH02
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Figure2-8. the internal structure of the general output interface
The relay with a absorption current of no more than 50mA can be driven directly. If it's
more than 50mA, and it is recommended to use a current amplification current, such as the use of
a ULN2803 chip. Reference figure 2-9 for external power relay method.
Figure2-9. general output interface connect with a small power relay
2.3.5 MPG port
As the Figure 2-2 showed, the marked No.5 position interface is MPG port . The pin order
see as Figure 2-10.
Figure2-10. MPG Port Pin order
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