| 摘要 |
983,657. Transistor oscillator circuits. MARCONI INSTRUMENTS Ltd. Oct. 9, 1963 [Nov. 21, 1962], No. 43968/62. Heading H3T. The resonant circuit of a variable-frequency oscillator is tuned by varying the capacitance of a semi-conductor diode 3 by means of a potential derived from a potential divider network. The potential divider network may comprise two potentiometers 5, 7 connected in cascade such that a given amount of adjustment of the control 10 produces approximately the same change in resonant frequency over the whole tuning range. Alternatively a larger number of potentiometers may be cascaded to give some other tuning law. |
