This 3V to 24 volt variable-regulated power supply can be adjusted from 3 to 25 ... The 1458 may be substituted in the circuit below, but it is recommended the supply voltage to pin 8 be limited to 30 ...

If you prefer text over video he was kind enough to share a schematic ... 0-24V DC at the input. In the video [Steven] tries two power supplies. His homemade DC bench power supply at 8V and ...

The controller mediates between an external 24Vdc power supply (±25%) and external battery pack to bridge ... is typically 60mA once the batteries are charged. An internal circuit blocks accidental ...