| 摘要 |
PROBLEM TO BE SOLVED: To provide a voltage-control-type resistor which possesses high resistance-to-voltage linearity for use in a turning circuit, etc. SOLUTION: Many voltage-controlled-type resistance cells are used to form a voltage-controlled-type resistance (value) constituting a body, and each cell is made of a transistor which possesses a capacitor for bias connected between a gate and a source, and a relevant controller which is coupled with that capacitor so as to keep stable charge on that capacitor for bias and keep the gate- source voltage at control voltage, corresponding to the desired resistance (value). The gate voltage applied to each transistor can float together with the source voltage, so as to keep the gate-source voltage constant, and besides that resistance constituting body provides the improve linearity of resistance (value) dependent upon the voltage together with bias action in a larger range while lowering the refresh frequency required for avoiding the penetration of noise.
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