Emergency sign power supply with battery charger

An emergency sign power supply connected to an isolating transformer, comprising:

• a bridge rectifier having an input for connection to the isolating transformer, said bridge rectifier having a first output and a second output;
• a plurality of LED branches connected in parallel with one another and connected to said first output and said second output of said bridge rectifier, each said LED branch including at least one LED;
• a battery having a first battery terminal and a second battery terminal, said second battery terminal connected to said second output of said bridge rectifier;
• a first resistor connected between said first output of said bridge rectifier and said first battery terminal;
• a first diode having an anode and a cathode, said anode connected to said first battery terminal and said cathode directly connected to said first output of said bridge rectifier;
• a non-flame-resistant enclosure housing said bridge rectifier, said LED branches, said battery, said first resistor, and said first diode.

An emergency sign power supply connected to an isolating transformer, consisting of:

• a bridge rectifier having an input for connection to the isolating transformer, said bridge rectifier having a first output and a second output;
• a plurality of LED branches connected in parallel with one another and connected to said first output and said second output of said bridge rectifier, each said LED branch including at least one LED;
• a battery having a first battery terminal and a second battery terminal, said second battery terminal connected to said second output of said bridge rectifier;
• a first resistor connected between said first output of said bridge rectifier and said first battery terminal;
• a first diode having an anode and a cathode, said anode connected to said first battery terminal and said cathode directly connected to said first output of said bridge rectifier.

An emergency sign power supply connected to an isolating transformer, consisting of:

• a bridge rectifier having an input for connection to the isolating transformer, said bridge rectifier having a first output and a second output;
• a first capacitor connected across said first output and said second output of said bridge rectifier;
• a plurality of LED branches connected in parallel with one another and connected to said first output and said second output of said bridge rectifier, each said LED branch including at least one LED;
• a battery having a first battery terminal and a second battery terminal, said second battery terminal connected to said second output of said bridge rectifier;
• a first resistor connected between said first output of said bridge rectifier and said first battery terminal;
• a first diode having an anode and a cathode, said anode connected to said first battery terminal and said cathode directly connected to said first output of said bridge rectifier.