Magnetic amplifier circuits converting half-wave input into full-wave output with transistor switch

Various types of magnetic amplifiers for operation with such low-level low-impedance signal sources as thermo-couples have recently been developed for use in automatic control systems. In many cases, their output needs to be amplified by means of multistage magnetic amplifiers. In some applications an a-c output or a full-wave output is desired from the output stage magnetic amplifier.