Hi Everyone, sorry if this question has been asked lots of times but I am at a loss of what to do next.
I have designed a common emitter amplifier using the turtorial on this website found here,
http://www.learnabout-electronics.org/Amplifiers/amplifiers20.php
and The Art of Electronics book and cannot see why it is not working.
I am using a NPN BC108 transistor, but do not seem to be able to get any amplification.
I am supplying the circuit with 9V from a bench power supply (I have also tried a battery as this is what I want to use eventually).
I chose Iq to be 0.03A, calculated Rl to be 300 Ohms, Re to be 36 Ohms, R1 and R2 to be 4.8 kOhms and 1.2 kOhms respectively.
On the input I am putting 3V at 1KHz in and all I get out is either a saw tooth wave with a bounce where it should go negative. Is this because I need to supply it with positive and negative 9V to get swing both ways?
If I shift the input wave up I just get the same out I put in.
If you need anymore info just let me know and I will post it if I know it.
Thanks
I have designed a common emitter amplifier using the turtorial on this website found here,
http://www.learnabout-electronics.org/Amplifiers/amplifiers20.php
and The Art of Electronics book and cannot see why it is not working.
I am using a NPN BC108 transistor, but do not seem to be able to get any amplification.
I am supplying the circuit with 9V from a bench power supply (I have also tried a battery as this is what I want to use eventually).
I chose Iq to be 0.03A, calculated Rl to be 300 Ohms, Re to be 36 Ohms, R1 and R2 to be 4.8 kOhms and 1.2 kOhms respectively.
On the input I am putting 3V at 1KHz in and all I get out is either a saw tooth wave with a bounce where it should go negative. Is this because I need to supply it with positive and negative 9V to get swing both ways?
If I shift the input wave up I just get the same out I put in.
If you need anymore info just let me know and I will post it if I know it.
Thanks