16pcs Metallic Disposable Plate
If you’re looking for an elegant and affordable way to entertain, look no further than our 16pcs Metallic Disposable Plate Set. Made of durable plastic, these plates are perfect for your next dinner party, holiday gathering, or any other special occasion. You’ll want to add these disposable plates to your collection of fine linens, right away!1. Field of the Invention
The invention relates to a circuit arrangement for driving an output stage of a signal converter which includes an amplifier having a first input terminal and a second input terminal and an output stage for generating a modulated signal, and is provided with a high power supply terminal, an output terminal for driving the output stage, and a low power supply terminal; wherein the output stage includes first components with low power consumption and second components with high power consumption and can be switched between the high power side and the low power side by means of a switching element.
2. Description of the Related Art
Such an amplifier circuit is known from U.S. Pat. No. 4,646,566 . The known amplifier circuit contains a signal modulator which is designed as a modulation-type amplifier circuit and which has a signal source formed by a first switch and a first resistance element (referred to as R1) connected in series to the signal source and which is connected to a current amplifier containing a second switch in series with a third switch. The current amplifier is connected to a voltage source at the cathode, for example the low-voltage source, of a diode (referred to as D). The second switch is connected between the current amplifier at the cathode of the diode and ground potential. The third switch is connected to the load to be driven. Since the amplifier only acts as an amplifier during unmodulated periods, the second switch is switched off and there is conduction in the first switch and the first resistance element arranged between the signal source and the current amplifier. Consequently, during unmodulated periods, the load is discharged via the first resistance element and the current amplifier contains the first resistance element. Furthermore, the current amplifier contains a second resistance element arranged in series with an emitter, the emitter of a fourth switch being connected to the second resistance element, whereby the current amplifier is connected and the circuit is switched to a current gain mode (FIG. 3). The control voltage for switching between modulation and demodulation is supplied by switching elements that are arranged in a first branch of the circuit.
In such amplifier circuits, the switching element is normally connected to the high power supply terminal, whereby the supply voltage that is to be connected to the circuit can be taken from the high power supply terminal. However, it is not