| 摘要 |
PURPOSE:To adjust efficiently and automatically an IF amplifier stage of a radio receiver by stopping the adjustement of an IF transformer when a signal from a detecting stage inputted to an automatic adjusting circuit reaches a maximum value. CONSTITUTION:An output from a standard signal generator 20 constituting an input device 3 is inputted through a standard simulating antenna 21 to a radio receiving circuit 1. Further, the output from a detecting circuit 19 is supplied to the circuit 1 as the input of an automatic adjusting circuit 2, and IF transformers 12, 16 are made stopped to a position where an output from the detecting circuit 19 reaches a maximum value by the adjustment from the automatic adjustment circuit 2. Then, an ideal characteristic with good selectivity is attained. |
