ARTIFICIAL DOUBLE POWER SUPPLY GENERATING CIRCUIT

摘要

PURPOSE:To obtain the plus and minus power supplies with a single AVR by using an AVR which produces the output voltage smaller than a single power supply and setting the output voltage of the AVR at GNDOUT. CONSTITUTION:A single power supply, e.g., 20V is supplied between PVIN and GNDIN and then supplied to an AVR 7 after the noises are eliminated by a capacitor 6. This supplied power supply is reduced down to 10V by the AVR 7 and delivered. Both capacitors 8 and 9 eliminate the ripple of the output voltage. Here the output voltage of the AVR 7 is set at GNDOUT. Thus the PVOUT and NVOUT are set at +10V and -10V respectively. In such a way, both plus and minus power supplies can be obtained with a single AVR.