The circuits of the television receiver are fed with supply voltages which are stabilized through a mains supply unit and the pillow distortion of the 110° picture tube is adjusted by means of active east-west screen correction.

The mixer circuit according to the invention may operate at low supply voltages by using switches connected only to the supply voltages VSS and VDD.

The microcontroller (MC) comprises an A/D converter (ADC1) for the conversion of the plurality of analog supply voltages (VCC1-VCCn) into digitized supply voltages.

Different supply voltages are used on the two parts.

The power supply (112) lockout circuit monitors the power supply signals from several power supplies.

The at least two semiconductor modules also monitor said power supplies, wherein the modules monitor themselves at least in a direction relative to said power supplies.

Power supply voltages are selectively modulated to correspond with degraded input voltages to a logic device.

Different supply voltages may be provided at different supply nodes of the oscillator in the first and second modes.

In another embodiment, means for supplying three power supply voltages are utilized.

A class-D amplifier is provided with an output stage that provides negative supply voltages, positive supply voltages, and ground.

In this way, different sensors can be detected without communication at different supply voltages.

The invention relates to a circuit configuration for monitoring and/or for regulating supply voltages.

The insulation shall be adequate for all system voltages the unit is designed for.

The supply voltage modulation types include ET, APT, DC-DC, dual, multi-state or fixed voltage supply voltages.

The supply voltages of the inverters are varied, so that at any given time, only one inverter has an appropriate supply voltage.