For a darlington configuration: $$h_{ie}=1k,h_{fe}=\beta=50,h_{oe}=25 \times 10^{-6},h_{re}=0 \quad for \quad both \quad transistors,R_L=3k.$$ how can we find the current and voltage gain?

My Approach:


simulate this circuit – Schematic created using CircuitLab

$$Current \quad Gain= I_{R_L}/I_{b1} \quad and \quad Voltage \quad gain = V_{R_L}/V_{input} $$

now how will i proceed....any hints or suggestions please...?

  • \$\begingroup\$ 'B' = beta equals current gain, but R sets the voltage gain. R can also reduce the current gain, but not increase it beyond the rated beta value. \$\endgroup\$ – Sparky256 Jan 28 '18 at 7:25
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    \$\begingroup\$ Show us a schematic of a circuit. In which configuration this Darlington work? \$\endgroup\$ – G36 Feb 18 '18 at 11:09

how can we find the current and voltage gain?

enter image description here

They are both zero.

  • \$\begingroup\$ \$V_{CC}^{V_{CC}}×V_{CC}+V_{CC} = V_{CC}(V_{CC})\int{V_{CC}}_{V_{CC}}^{V_{CC}}\$, Vcc. V C C. VCC? Vcc... CCV C C V V C C V VVVC! \$\endgroup\$ – Harry Svensson Feb 28 '18 at 12:17
  • \$\begingroup\$ @HarrySvensson I can see that today is a bit low on the question count LOL \$\endgroup\$ – Andy aka Feb 28 '18 at 12:20

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