| 摘要 |
PURPOSE:To heighten the amplitude of a signal by a single power source with resulting low power consumption, by providing a transformer on which a power source can be applied directly on the primary side by interposing a fuse, and connecting a capacitor being grounded between the fuse and the power source. CONSTITUTION:An input intermediate terminal 2 on the primary side of the transformer T is connected to the power source +5V via the fuse H, and also, it is grounded via the capacitor C1. Furthermore, it is grounded via a resistor R1 and is grounded via the capacitor C2. Therefore, by grounding the emitters of transistors TR1 and TR2 and applying the power source directly on the primary side of the transformer T, a unipolar signal on the primary side of the transformer T is converted, and it is outputted on output terminals 4 and 6 on the secondary side as a bipolar signal with sufficient amplitude. Therefore, it is possible to save the power source to obtain the amplitude of the signal as the single power source, and to reduce the power consumption.
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