Yes i understand that. Thats why in my original post i stated that RE without a capacitor for Vo/Vin is multiplied by beta giving you a large denominator hence a small gain.The ratio of collector resistor to emitter resistor gives a gain figure. The reason for the capacitor is to make the impedance of the emitter seem to disappear at higher frequencies. Sometimes that means higher than 2 or 3 HZ. It's very negotiable with a capacitor. Very predictable without a capacitor.
These are the specifics i was given. What more do you want me to say about it?Typically, something drives design requirements. The aren't supposed to be arbitrary. Good luck.
You can eliminate the emitter resistor entirely, but you will need to devise some other form of thermal stabilization.Is this possible?
I am restricted from using caps for an on chip device
How do i get some gain out of a common emitter without a bypass cap
Obviously the presence of RE in my AC model kills my gain given its multiplex by Beta in the AC model
Can you explain in a little more depth?That can be done with a long tail pair. The emitter AC load is the grounded base transistor.
|Thread starter||Similar threads||Forum||Replies||Date|
|R||Can we use mosfets to make a darlington pair ? Is it true that it will give us a very high gain at midband frequency ?||General Electronics Chat||3|
|D||Buffer a high Voltage||Power Electronics||5|
|K||High gain 20 kHz amplifier||Analog & Mixed-Signal Design||6|
|V||SEPIC CONVERTER with high static gain for renewable application||General Electronics Chat||0|
|R||High gain photoconductor amplifier design questions||Analog & Mixed-Signal Design||18|
by Robert Keim
by Jake Hertz