I have simple transistor amplifier with active load, problem is I am using the circuit in 1 to 10 MHz range, so as you can see the gain is low in this region. Used transistors are bc337 and bc327. I do need gain around 800.

So my question is:

Should I use these transistors and chain more stages to archive desired gain.


Should I use another type of transistors with higher maximum frequency. If yes what kind of?

The key factor is price. schematics enter image description here

  • \$\begingroup\$ You need DC feedback to stabilize the operating point or one of the transistors will saturate. \$\endgroup\$ – Kevin White Feb 20 '20 at 0:54
  • \$\begingroup\$ Could you plese explain it in more delay, perhaps send me some example? \$\endgroup\$ – andz Feb 20 '20 at 1:09
  • \$\begingroup\$ "I am using the circuit in 1 to 10 MHz range... need gain around 800" - need some other specs too. What is the purpose of this circuit? \$\endgroup\$ – Bruce Abbott Feb 20 '20 at 5:32

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