6.1 Input Power (J4)

Input power may be supplied using either the input power connector J4, the I/O power connector J5, or directly through the PC/104 bus power pins, if a PC/104 power supply is used with the CPU.

The board only requires +5VDC input power to operate. All other required voltages are generated on board. The +12V, -12V, and -5V inputs are provided for convenience and are passed onto the PC/104 bus but are not used by Helios. The +3.3V input is passed through to the LCD connector and may be used to power an attached LCD. Multiple +5V and ground pins are provided for extra current carrying capacity. Each pin is rated at 3A max.

For applications requiring less than 3A, the first four pins may be connected to a standard 4-pin miniature PC power connector, or the alternate power I/O connector may be used. For a larger PC/104 stack the total power requirements should be calculated to determine whether additional power input wires are necessary.

Connector type: Standard .1” single row straight pin header with gold flash plating