| 摘要 |
1,151,902. Transistor oscillator circuits. MINISTER OF TECHNOLOGY. 22 June, 1966 [24 March, 1965], No. 12419/65. Heading H3T. An oscillator circuit includes a centre-tapped parallel resonant circuit L2, C1, a direct voltage supply PN, a current path of low impedance between the centre-tap and one side P of the voltage supply, switching means J1, J2 for connecting the other side N of the voltage supply alternately to one or the other end of the parallel resonant circuit, and feedback means to control the switching means to maintain oscillation of the circuit. Feedback is provided by coupling between coils L2, L3. Doublewound high inductance choke T1 ensures a constant total base current through resistor Rb. |
