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EL34 Hybrid PP
It's a Dual-Mono push-pull amplifier inexpensive and compact. The first stage features an Hybrid SRPP to permit a direct coupling with the next stage and reducing the complexity of overall phase response. The Output Stage is a Class A1 Ultralinear. The Output Power is 15-16 W (23% efficiency).The criterion network could be inserted between the points a and b or between c and ground, if phase margin measurements are not satisfactory.
H.V. power supply is around a voltage doubler. Voltage at A point is 400Vcc.
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