Oscillators – Solid state active element oscillator – Transistors
Patent
1975-05-02
1976-11-30
Kominski, John
Oscillators
Solid state active element oscillator
Transistors
331108D, H03B 512
Patent
active
039952320
ABSTRACT:
An integrated circuit oscillator includes a timing circuit and a bistable circuit for controlling the timing circuit. The timing circuit includes a capacitor and a pair of field effect transistors (FET), one of which is employed for charging the capacitor and the other of which is employed for discharging the capacitor. A first stage having a relatively low trip voltage is responsive to a low level of charge on the capacitor for actuating the bistable circuit to a first state and a second stage having a relatively high trip voltage is responsive to a high level of charge on the capacitor for actuating the bistable circuit to a second state. The charging and discharging FET's are rendered conductive in response to the first and second states, respectively, of the bistable circuit, such that the capacitor is both charged and discharged over relatively long time periods. A pair of clamping circuits connected to the charging and discharging FET's reduce frequency variations which would normally occur with variations in process parameters and variations in the voltage level of the power supply.
REFERENCES:
patent: 3156875 (1964-11-01), Florino et al.
patent: 3295069 (1966-12-01), Perry
patent: 3339155 (1967-08-01), Camenzind
patent: 3351871 (1967-11-01), Swain
patent: 3708757 (1973-01-01), Savarese et al.
patent: 3742384 (1973-06-01), Breitzmann
patent: 3886485 (1975-05-01), Takahashi
patent: 3904988 (1975-09-01), Hsiao
patent: 3904989 (1975-09-01), Cordell
Voltage-Controlled Oscillator, Cox et al. IBM Tech. Bul. vol. 14, No. 1, JN, 1971.
Kominski John
National Semiconductor Corporation
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