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Before you connect the SS963 product, you should conduct the static electricity on your body by touching the accumulated electrical earth contact (heater pad, metal pipe or wall) so that the product is not damaged. This will prevent the sensitive components of SS963 from being damaged by static electricity accumulated in thousands of volts.
In the basic connection diagram above, two separate DC supply sources are used (Source 1 and Source 2). The sources you use must have good DC regulation. In particular, it is important that Source-1 has good DC regulation in order for SS963 to work properly.
Source-1 must be a supply source with a current capacity of at least 50mA that produces a DC voltage between 6 and 12 volts. Our recommendation in this regard is that the source has a current capacity of more than 100mA, so the operation of the system will last longer.
Source-2 can be at any voltage between 0 and 30 volts, that you need to connect to the outputs. Also, using a source with at least 1.5 times the current capacity of the total current that the loads you need to control will make your system run longer. SS963 has a common cathode (open collector) design. This means that the cathodes (negative pole) of the loads you will connect to the SS963 must be connected to the output ports (P1, P2, P3 and P4). Loads use anode voltage common from Source-2 (see connection diagram above)
The cathodes of Source-1 and Source-2 are common. For this reason you can also connect to the cathode of Source-1, to the cathode of Source-2, not to the supply terminal of SS963.
There are 2 large earth (GND) terminals on the SS963. Connecting Source-2’s earth terminal to both cathode terminals of the SS963 is important to maintain stable operation of the system at high current requirements.
If the loads to be controlled are between 6 and 12 volts, there is no need to use two different power supplies. In this case, you can supply both the SS963 and your loads with the same source.
