Aug 4, 2006 #1 N ntung Newbie level 3 Joined Aug 4, 2006 Messages 4 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,299 I tried to design a common collector using 2n3904 to get a current gain for at least 125mA to drive a speaker. I tried but my output waveform is not what i expected to get.(it looks like its rectificed) Anybody can help me?
I tried to design a common collector using 2n3904 to get a current gain for at least 125mA to drive a speaker. I tried but my output waveform is not what i expected to get.(it looks like its rectificed) Anybody can help me?
Aug 4, 2006 #2 flatulent Advanced Member level 6 Joined Jul 19, 2002 Messages 4,624 Helped 489 Reputation 980 Reaction score 151 Trophy points 1,343 Location Middle Earth Activity points 46,689 Re: Help me with Common Collector Configuration for current Your problem is that pullup is through the transistor and pulldown is through R3. You need to use a complementary emitter follower type stage with a PNP transistor for pulldown.
Re: Help me with Common Collector Configuration for current Your problem is that pullup is through the transistor and pulldown is through R3. You need to use a complementary emitter follower type stage with a PNP transistor for pulldown.
Aug 4, 2006 #3 M manojshukla Banned Joined Aug 4, 2006 Messages 47 Helped 7 Reputation 14 Reaction score 3 Trophy points 1,288 Activity points 0 Re: Help me with Common Collector Configuration for current Use push pull type cofiguration. It will help you.
Re: Help me with Common Collector Configuration for current Use push pull type cofiguration. It will help you.