modified 10 years ago

HELP with preamp

01:01:45

I used a BC337 Transistor
I cant get this working
Where i have to place speaker ? Has to be in series with orange resistor? I have to replace that resistor with speaker ?
I have a 4ohm speaker

published 10 years ago

nikisalli

10 years ago

If you want to make a great amplifier you need to make a specular copy to make the sine go from 5v to -5v

cgyhxsth

10 years ago

Yes, replace this resistor with speaker

cgyhxsth

10 years ago

Do it has to work with 1mv source? Current on transistor is too small if you want to use it with speaker

cgyhxsth

10 years ago

Better use any opamp. Cheap, and as simple as this circuit. For example tl071 opamp

cgyhxsth

10 years ago

And this circuit is only preamp, not full amplifier. Output will be max 10mV

lmccoig

10 years ago

1 mV on sine wave signal should be closer to 1 volt.

Addramyrz

10 years ago

http://www.talkingelectronics.com/projects/TheTransistorAmplifier/TheTransistorAmplifier-P1.html

faceblast

10 years ago

^^^ best site

indianachones

10 years ago

Thanks guys. Im using electrolitics caps. Are they ok or i should another kind ?

Addramyrz

10 years ago

Best imo.

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.