| 摘要 |
PURPOSE:To secure the linearity of an output frequency to an input voltage by providing a feedforward circuit comprising resistors and constituting a part of a voltage dividing circuit between an output circuit and an inverting switching circuit. CONSTITUTION:The feedforward circuit 41 to which a resistor 40 is connected and constituting a voltage dividing circuit together with resistors 22, 23 of an output circuit 20 is provided between the circuit 20 and the inverting switching circuit 15 constituting a hysteresis comparator. That is, the circuit 41 consists of the resistor 40, is connected to the circuit 15 and to a non-inverting input 25 of an operational amplifier 21, DC voltage signals en, ep and output signals + or -Er are received alternately, and the signals en, ep and + or -Er are divided to keep the linearity of the output frequency to the input voltage signal (e).
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