diff --git a/src/main/angular/src/app/editor/circuit/Calculation.ts b/src/main/angular/src/app/editor/circuit/Calculation.ts
index 23166e5..618ce75 100644
--- a/src/main/angular/src/app/editor/circuit/Calculation.ts
+++ b/src/main/angular/src/app/editor/circuit/Calculation.ts
@@ -16,6 +16,7 @@ export class Calculation {
   private potentials: number[] = [];
 
   constructor(
+    readonly pivot: Junction,
     readonly parts: Part[],
     readonly junctionsWithoutPivot: Junction[],
     readonly wires: Wire[]) {
@@ -31,6 +32,9 @@ export class Calculation {
       junction.maxCircuitVoltage = maxCircuitVoltage;
       junction.voltage = this.getPotential(junctionsWithoutPivot.indexOf(junction));
     });
+    pivot.minCircuitVoltage = minCircuitVoltage;
+    pivot.maxCircuitVoltage = maxCircuitVoltage;
+    pivot.voltage = 0;
   }
 
   private matrixInit(size: number) {
@@ -152,6 +156,6 @@ export class Calculation {
     }
     const junctionCountIncludingPivot = foundJunctions.length + 1;
     console.debug(`    => Circuit #${circuitNumber} (${foundParts.length} parts, ${junctionCountIncludingPivot} junctions, ${foundWires.length} wires)`);
-    return new Calculation(foundParts, foundJunctions, foundWires);
+    return new Calculation(pivot, foundParts, foundJunctions, foundWires);
   }
 }