Open Loop Pulse Triggering
Series 1 -
Tests were performed
on coils A, B, C and D using a 15 cell SLA DC battery source with a nominal voltage
of 30V (actual open circuit voltage is about 33V). The optimum pulse width was
determined over a range of tests. A coil current trace was recorded for each test.
The circuit configuration is shown in fig 1. Note that the battery source, Vs,
is floating with respect to the scope ground, otherwise Vs would be shorted to
across the sensor resistance.
1. Open loop testing circuit