Narrow Your Results
A multiple frequency RC oscillator for use in TOUCHTONE® telephones has been made using tantalum films and beam lead silicon devices. The integrated design, equivalent to over 50 discrete components, requires a volume of about four hundredths of a cubic inch. All eight...
Recently, Microchip has introduced a series of new PIC16 and PIC18 PICmicro® microcontrollers that have an on-board Internal RC Oscillator, capable of eight frequencies from 31 kHz to 8 MHz. These microcontrollers include the following devices: * PIC16F818/819 * PIC16F87/88 *...
Conventional RC oscillators, though offer inexpensive components as resistors and capacitors, are not suitable for frequencies beyond few MHz. Here, a VCO based RC oscillator is proposed, where the output frequency can be programmed finely with digital codes over...
The paper considers a new push-pull RC-oscillator/multivibrator. In the sinusoidal regime the circuit develops two counter-phase oscillations located at different DC levels. The DC level of the first oscillation is close to the power supply level, the DC level of the second...
A class of RC oscillators which incorporate a paraphase voltage amplifier instead of the conventional single output amplifier is presented. Interesting properties are displayed and low-frequency oscillators can be constructed using far lower values of resistance and capacitance...
This paper presents a high-precision oscillator using a single comparator. A reference bias current is used to charge and discharge the capacitor array to generate a 100MHz square wave signal. Realized by Hlmc55ef process with 1.2V power supply, the proposed oscillator exhibits 59...
A new RC resonator structure based on a modified twin-T bandreject filter is described. The properties of the structure are tested by SPICE simulations and by measurements of the real oscillator circuit. Measurements show a clear improvement in near-carrier phase noise in comparison...
RC oscillators based on two active phase shifters of the all-pass type prove to be tunable over a 10-to-1 frequency range by varying a single resistance. Harmonic distortion can be less than 1 percent over this range. Analysis is made of the variation of Q with tuning and the...
A technique is proposed for stabilizing the output amplitude of a variable-frequency RC sine-wave oscillator. Amplitude settling time is reduced by converting amplitude to a d.c. voltage having only a small ripple content, which requires little filtering. A relationship between...
Two minimum-component RC-sinusoidal oscillator circuits using current conveyors are proposed. Each circuit uses a single current conveyor, two resistors, and two capacitors. The two circuits enjoy low sensitivity characteristics.
