| 摘要 |
PURPOSE:To increase the utilizing efficiency of power supply, by connecting a plurality of integrated circuits in series between power supplies and providing a current by-pass means between power supply terminals of the integrated circuits. CONSTITUTION:Power supply terminals of integrated circuits 10, 20, 30 and 40 is connected in series between a positive output terminal 1a and a negative output terminal 1b of a power supply 1 via resistors 2, 3 and 4. A series circuit of diodes 11 and 12 is connected between power supply terminals 10a and 10b to constitute a current by-pass means which is conductive when a voltage at a prescribed voltage or more is applied between the terminals 10a and 10b. Similarly, the integrated circuit 20 is provided with a constant voltage circuit consisting of resistors 21 and 22 and a transistor 23, the integrated circuit 30 is provided with a series circuit of diodes 31 and 32, and the integrated circuit 40 is provided with a constant voltage diode 41 respectively. If the current consumption of the integrated circuit 40 is greatest, the constant voltage diode 41 can be omitted. |
