The SSD card is designed to produce red, yellow and green colors for use in searchlight signals employing 2-lead bi-color red/green LEDs. The SSD outputs one polarity to light the red LED, the opposite polarity to light the green LED and rapidly alternates the polarity to generate the yellow. The quality of the yellow is enhanced, for any given LED, by using a built-in potentiometer to alter the duty cycle, i.e. the percentage of time that the red LED is illuminated versus the time that the green LED is illuminated. Each SSD can handle up to 12 LEDs.
Note: The 2-lead LED oscillation capability is built into the SMINI. Therefore, MAXI-NODE users only need consider using the SSD card.
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Note: The quoted prices for all circuit boards provided by JLC Enterprises are for the fabricated boards only, that is, without any electronic parts. All circuit boards come unassembled and less components. All holes are drilled and all circuit traces are tin plated for easy soldering. Where double-sided boards are provided, all feed through holes are plated-through. The SMINI, SUSIC, RS485, DIN32, DOUT32 and PGCC boards have solder masking on both sides, silk screen legend on component side and are factory tested against shorts and open circuits.