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Explain high frequency equivalent circuit of BJT
written 8.8 years ago by gravatar for abgharge abgharge • 260 modified 5.6 years ago by gravatar for prashantsaini prashantsaini • 0
electronic devices and circuits
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written 8.8 years ago by gravatar for abgharge abgharge • 260

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Figure 1: Diagram of high freq. circuit

Analysis of amplifier at high frequency means to find $fH_i$ and $fH_o$ (higher cut-off frequency on input side and output side).

At high frequency Ce, Cb, Cc act as short circuit. But junction and wiring capacitors are effective at high frequency.

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Figure 2: …

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