I think 24V AC is a standard Voltage Output of common transformers, that's why this circuit was designed for this voltage. A few volts up or down(maybe +-5V) aren't going to produce any fault but it is recommended that you use a 24V AC transformer. http://www.laptopbattery-sale.com/ http://www.laptopbattery-sale.com/
0-30 Vdc Stabilized Power Supply
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I think 24V AC is a standard Voltage Output of common transformers, that's why this circuit was designed for this voltage. A few volts up or down(maybe +-5V) aren't going to produce any fault but it is recommended that you use a 24V AC transformer.
http://www.laptopbattery-sale.com/
http://www.laptopbattery-sale.com/