Relaxation oscillator

About: Relaxation oscillator is a research topic. Over the lifetime, 1952 publications have been published within this topic receiving 22326 citations.

Design of high-speed, wide-band MOS oscillators for monolithic phase-locked loop applications

Abstract: Methods are presented for the realization of MOS oscillators with multidecade tuning range and GHz top speed. The theory yields transistor-only circuits with robust, digital-like structure. These are relaxation networks capable of high-frequency operation due to the use of parasitic timing capacitors, simplified feedback networks, and submicron-channel transistors. Optimum design solutions exist for both NMOS and CMOS, the latter having inherent advantages such as parasitic 'masking' properties. The digital-and-voltage-controlled oscillators developed are intended for complex monolithic PLL applications. >

Disaster avoidance clock for anti-lock braking system

Abstract: On an integrated circuit (230), a back-up oscillator circuit (231) is provided which includes a back-up oscillator (540) which can be fabricated using conventional integrated circuit techniques, a clock monitor (520) for sensing a malfunction in a primary oscillator, and a multiplexer (530) for switching from the primary oscillator to the back-up oscillator (540) in the event the primary oscillator malfunctions. The back-up oscillator (540) is typically used in an anti-lock braking system to provide a safe shutdown after an oscillator malfunction. The internal back-up oscillator (540) being sufficient for execution of a shutdown routine.

Integrated relaxation oscillator with no comparator for energy harvesting

Abstract: A fully-integrated 12 kHz relaxation oscillator for energy harvesting application is presented. The oscillator has no comparator and no reference voltage. A conventional comparator has been replaced by a pseudo-inverter chain to avoid comparator offset effect. Moreover, inverter threshold variation has no impact on the frequency. The circuit has been designed with 0.18 μm standard CMOS process. The oscillator operates in subthreshold region and consumes an ultra-low power of 120 nW. A temperature coefficient of 31 ppm/°C has been achieved over -40 to 90°C.

Impulse operated relay

Abstract: My invention relates to impulse operated relays. Specifically, my invention Is a gas tube relay and circuit therefor for alternately starting and stopping current flow by, or for indicating every nth one of, a series of voltage pulses. I am aware of the so-called relaxation oscillator whose...