That is a common configuration for driving higher VOLTAGE devices from a lower voltage sink output. That circuit will not allow you to control more current than the WS2801 can handle, as obviously the current is going through the WS2801.
That is a common configuration for driving higher VOLTAGE devices from a lower voltage sink output. That circuit will not allow you to control more current than the WS2801 can handle, as obviously the current is going through the WS2801.