| 摘要 |
1491967 Oscillators SIEMENS AG 10 March 1975 [20 March 1974] 9940/75 Heading H3F [Also in Division H1] The inductor 13 of the frequency determining circuit of an oscillator has an axially off-centre portion connected across a coil 8 which may be for induction heating, and a core 14, shorter than the length of the inductor, axially adjustable within the inductor. The adjustment allows the coupling to the coil to be varied without changing the resonant frequency of the circuit. |
