Preamp using the current series feedback circuit

Posted on Nov 10, 2015

Pre-amplifiers using current feedback circuit tandem type, its output impedance is approximately DC collector resistance Rc ,, surface

Preamp using the current series feedback circuit
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RC attenuator input impedance of the network is the load impedance of the amplifier. If the tone control circuit without R3, then, when you lift the treble, the equivalent load impedance of the amplifier can be drawn in the form of Figure 1-67.

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