Abstract: A crystal oscillator with variable gain and variable output impedance inverter system includes an inverter, a variable impedance feedback circuit, connected between the output and input of the inverter, a crystal oscillator system, having a crystal with first and second electrodes connected across the input and output of the inverter; a serial variable impedance circuit connected between the inverter output and an electrode of the crystal and a control circuit for temporarily, during start up mode, increasing the impedance of the feedback circuit and decreasing the impedance of the serial circuit relative to the stationary mode impedances and then returning the feedback impedance to the lower impedance level and the serial circuit to the higher impedance level that promotes high frequency stability of the oscillator in the normal, stationary mode, of operation.

Abstract: A crystal oscillator with variable gain and variable output impedance inverter system includes an inverter, a variable impedance feedback circuit, connected between the output and input of the inverter, a crystal oscillator system, having a crystal with first and second electrodes connected across the input and output of the inverter; a serial variable impedance circuit connected between the inverter output and an electrode of the crystal and a control circuit for temporarily, during start up mode, increasing the impedance of the feedback circuit and decreasing the impedance of the serial circuit relative to the stationary mode impedances and then returning the feedback impedance to the lower impedance level and the serial circuit to the higher impedance level that promotes high frequency stability of the oscillator in the normal, stationary mode, of operation.

Abstract: A voltage regulator system is disclosed for providing a regulated voltage supply. The voltage regulator system includes a power supply input node for receiving a power supply input voltage, a regulated voltage output node for providing a regulated output voltage, and a feedback circuit coupled to the regulated output voltage node and to a voltage regulator input node wherein a non-zero voltage is provided by the voltage regulator input node.

Abstract: A voltage regulator system is disclosed for providing a regulated voltage supply. The voltage regulator system includes a power supply input node for receiving a power supply input voltage, a regulated voltage output node for providing a regulated output voltage, and a feedback circuit coupled to the regulated output voltage node and to a voltage regulator input node wherein a non-zero voltage is provided by the voltage regulator input node.