Low voltage detect

The LVD for the Mt Eckersley repeater is now finished and working ready for installation in the VK3RSW cabinet.

The device makes use of a solid state relay. A microprocessor looks after the management of voltages. If the battery voltage falls below 11.9 volts the relay turns off and does not turn on again until the battery voltage exceeds 12.7V (80% charge) for 100 minutes. The timer ensures the battery is in good condition before the repeater is used.

The normal on range is from 13.8V (fully charged) to 11.9V (20% charge).

The device was home brewed and software program written in the VK5DJ shack.

LVD for VK3RSW (photo off centre to stop reflections)
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