50WOTL amplifier circuit

Circuit shown in Figure. Higher technical specifications of the circuit, is a very good OTL amplifier circuit. The frequency response of the
50WOTL amplifier circuit - schematic

circuit of 10Hz ~ 100kH, total harmonic distortion <0.1%, which is not much in general (YFL power amplifier see o barrier circuit consists of four parts: the input stage, impedance converter stage, and power output of the inverter stage level. interstage resistance and capacitance coupling units, no large DC negative feedback loop, since each level plus deeper local feedback, so the working point of the circuit is very stable fixed O VTi and peripheral components of the input stage, in order to increase the input impedance of the circuit and stability ,, rTc emitter using a high-value resistor 1_5kfl of O VT2, VT3 composed of direct-coupled amplifier input stage and it is coupled by a capacitor C3 o Rl l-oriented electrical negative feedback stage resistance, to stabilize the operating point of the level oVT3 using emitter output, to reduce the output impedance, easy and inverter stage VT4 match, improve inverter stage VT4 push capability.


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