Elenco XP-625 AC/DC Variable Power Supply

Frey product description failed to mention the following IMPORTANT INFO (taken from Elenco's website): "This product is intended for applications where high voltage variance and fluctuations can be tolerated. The voltages produced by this power supply are not filtered or regulated resulting in damage to sensitive devices." This omission has resulted in MANY frustrating labs of students burning out small bulbs while making circuits. If I had known I would NOT have ordered this for circuit experiments (Physics class)