| 摘要 |
PURPOSE:To accurately set the tuning voltage, by forming a variable resistor to set tuning voltage with a printed resistor. CONSTITUTION:The first printed resistor 1 to set the tuning voltage for the channel selection of low band of VHF is formed with electrode films 4, 5, 6 to pick up a voltage corresponding to each channel. Similarly, to selects high band, the 2nd printed resistor 7 is formed with electrode films 10-18. Further, electrode films 4-6 and 10-18 are connected to a selector switch 20. Further, the printed resistors 1, 7 are formed on a base 19 with thick film hybrid, allowing to accurately set the tuning voltage. |
