Supplemental emergency power source for railroad track switch systems

A supplemental power source that is connectable to a standard railroad track switch power source, the supplemental power source having outputs for connection to inputs of a standard railroad track switch for powering the railroad track switch, the standard railroad track switch power source including a standard battery charger having inputs configured to connect to an AC power grid and having DC outputs, the standard railroad track switch power source also including a standard battery connected to the DC outputs of the standard battery charger;

• the supplemental power source comprising:
• (a) a pair of supplemental power source input connectors (A) configured for connection to the DC outputs of the standard battery charger and standard battery charger;
• (b) a pair of supplemental power source output connectors (B) configured for connection to a standard railroad track switch;
• (c) an electrical conductor electrically connected between a first one of the supplemental power source output connectors (B) and a first one of the supplemental power source input connectors (A);
• (d) a diode connected between a second one of the supplemental power source input connectors (A) and a second one of the supplemental power source output connectors (B), the diode connected in a polarity to prevent current flow to the standard battery and the standard battery charger;
• and
• (e) an ultracapacitor electrically connected between said electrical conductor and the second one of the supplemental power source output connectors (B).