EL4N

The power supply EL4N is an analog power supply with a ripple voltage < 5 mV. It is used exclusively to provide the internal voltages for the EL01, EL4D and EL4A. As an additional safety feature, if the start up self-test was not successful, the SC1 (System Controller Card) enables only the 5V for the CPU. All other voltages are disabled for safety reasons. The EL4N also has over-current protection featuring a resettable fuse. It protects against shorts and resets itself, when the short is removed.