I came up with this idea for a portable, self-contained pulser that would not require the battery to be fully charged, but would still generate decent pulses. The internal batteries furnish power to the pulser,.and the pulsers are independently switched, so I can connect them without damaging the pulser circuits. The batteries can be charged (or not) while either connected or unconnected without changing the operation of the pulsers. Both versions have peak detector jacks, so I can hook up to my monitoring board, or just check it with a meter.
This one uses two 6V/4AH SLA batteries in series.
This one uses four 7.2V/2.8AH Nicads in series-parallel.
