===== Getting + and - from a dual power supply =====
How you can use a dual power supply to get both positive and negative voltage
code=Circuit
height="310" width="500"
archive="Circuit.jar"
p1name="pause" p1value=20
p2name="startCircuit" p2value="PSU.txt"
p3name="startLabel" p3value="Dual Power"
p4name="useFrame" p4value="false"
/>
{{:dual.jpg}}