REPEATER OF ALTERNATING AND DIRECT VOLTAGE SIGNAL Russian patent published in 2022 - IPC H03F1/32 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, and it is based on energy conversion by a pulse width modulation (PWM) method. A repeater of an alternating and direct voltage signal contains a signal source with input terminals XS1.1 and XS1.2, a polarity shaper DA2.1, operational amplifiers DA1.1 and DA1.2, positive A2 and negative A3 switches, an interference suppression filter, an active resistor, a transformer with primary 1 and secondary 2 and 3 windings, and a microcircuit IC1. The microcircuit IC1 is connected to a resistor R7 and a capacitor C48, pulses from which come to the amplifier through power transistors VT1-VT4. Transistors VT1-VT4 are connected to primary winding 1 of the transformer T1. The signal source is connected to the polarity shaper DA2.1, which generates positive or negative voltage at an output. At positive voltage, the positive switch A2 is opened, and energy rectified from secondary winding 2 of the transformer T1 comes to smoothing capacitors C17, C18, C19. At negative voltage at the input terminal XS1.1 of the signal source, at an output of the polarity shaper DA2.1, negative voltage is generated, which closes the positive switch, and opens the negative switch, and energy in secondary winding 3 of the transformer T1 comes to smoothing capacitors C17, C18, C19. When supplying alternating voltage at the input of terminals XS1.1-XS1.2 of the power source, the active resistor is included in the operation.

EFFECT: capability of repeating any form and frequency of an input channel at an output, including positive or negative voltage, which allows for intensification of sound frequency signals.

6 cl, 2 dwg