| 摘要 |
PURPOSE:To improve initial starting and operation stability,by imparting a desired offset voltage between the input signals to the two input terminals of an operation amplifier constituting a bridge circuit. CONSTITUTION:A circuit, which controls a hot wire at an approximately constant temperature, is constituted by a resistor 101, the hot wire 102, resistors 103 and 104, and the operation amplifier 106. A diode 503 is connected between the noninverted input terminal of the operation amplifier 106 and the connecting point of resistors 501 and 502. The resistors 501 and 502 form a series circuit. To one end of the series circuit, a voltage Vcc is applied, and the other end is grounded. |
