Synchronous inverter compatible with commercial power

DETAILED DESCRIPTION The FIG.
1 block diagram shows a minor energy source 37, such as a wind-driven generator, that is connected to the compatible synchronous inverter by a two conductor cable 1.
When only a very small amount of energy is available from 37, the switching circuits 39 of the inverter 33, that may be a microprocessor controlled switching circuit or a simple voltage sensitive relay switching circuit, keep the output of the minor energy source connected to a dummy load 40 which is a lamp of a voltage and wattage rating sufficient to permit the lamp to absorb the output of 37.
When the switching circuits perform this function, they also keep the input and output circuits of the amplifier disconnected from the house and commercial power circuit.
When the energy from 37 increases to a predetermined level, that is just enough to cause energy to be transferred from the amplifier output into the house circuit, switching circuits 39 transfer the output of 37 from the dummy load 40 to the amplifier 12, and at the same time connect the input and output circuits of amplifier 12 to the house electrical load in parallel with the commercial power.
The linear amplifier 12 accepts a small input signal from the commercial power, amplifies this signal to match the commercial power voltage by using the direct current minor energy source power, and feeds its output into the house electrical load in parallel with energy furnished by commercial power.
The amount of energy flowing from the amplifier to the house electrical load is proportional to the direct current energy available from the minor energy source 37.
When the voltage level from 37 drops below the value required for transfer of energy from the amplifier to the house circuits, the switching circuits 39 disconnect amplifier 12 input and output circuits from the house circuits and at the same time transfer the output of the minor energy source from the amplifier 12 to the dummy load 40.
A preferred embodiment of the invention is illustrated in the FIG