The method also includes selectively activating the voltage pull-up logic circuit of the level shifting circuit.

In a particular embodiment, a method includes receiving an input voltage at an input to a level shifting circuit that includes voltage pull-up logic.

Upper neck tension force

Upper neck tension Force

Said invention can be used for highly efficient and small-sized alternating current converters.

The punch through inhibit voltage level is approximately one half the very large programming voltage level.

The third speaker is configured as a voltage-dividing resistor on a speaker input terminal.

An operation at the high side at enhanced voltage levels is possible .

What is described is a high efficiency voltage doubler (100).

A high level is input to the fixed voltage input end.

The selected voltage is used as a high level voltage, which is exported to a PWM signal output module.

A speaker (300) outputs sound in response to the voltage signals.

These charge pumps must rapidly charge a load to a high voltage and then maintain a voltage with a high degree of stability.

The set value for the parallel voltage regulator (PR) is preferably displaced upwards when the serial voltage regulator (SR) draws current.

When the external loudspeaker controller is switched on, it allows either the internal loudspeaker or external loudspeaker to output sound.