| 摘要 |
PURPOSE:To eliminate the adjustment for the titled detecting circuit, by incorporating a ceramic resonator to said detecting circuit. CONSTITUTION:For a differential peak type detecing circuit 10, the 1st and 2nd envelope detecting circuits are conncted to points A and B respectively. The outputs of these two detecting circuits are supplied to a differenctial amplifying circuit. A resonance circuit 11 is provided in the circuit 10 and consists of a circuit in which a resistance R is connected between terminals A and B in parallel to a series circuit of a double terminal type peizoelectric resonator 12 and a coil L2. |
