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Category: Inside Circuits Views: 403 Rank: 6 This amplifier has a high quality circuit that includes full sort circuit protection and very low T.H.D. at full range of frequency. It needs simmetrical power supply +-40V. The power transistors at the output are connected as DARLINGTON and both needs heatsinks. The power can reach 60 watts at 8 ohms or 80 Watts at 4 ohms..  Characteristics: power= 60 watts at 8 ohms or 80 Watts at 4 ohms power supply=+-40 Volts current concumption= 50mA - 4A Frequency range: 5-35000 Hz Sencitivity= 0-1 dbm (0.707-1.5V) Amplification= 24 T.H.D. = 0.05 at 1Khz 0.08 at 10 Khz 0.1 at 20 Khz ---------------------------------- Parts: R1=27K R2,6=470 R3=10K R4=47K R5,12,18=1K R7=12 R8,9,10,14,17,19,20=100 R11=3,9K R13=180 R15,16=0,15 R21,22=470 P=4,7K D1-D6=1N4148 C1,4,6=100uF/63V C2=22uF/63V C3=4,7uF/25V C5=220uF/16V C7=330pf TR1=2N2219 TR2,3,7=2N2905 TR4,6=BD237 TR5=BD238 TR8,9=2N3055 ------------------------------ Datasheet file1: Click here to download 2N2219.pdf datasheet. Datasheet file2: Click here to download 2N2905.pdf datasheet. Datasheet file3: Click here to download BD237.pdf datasheet. Datasheet file4: Click here to download BD238.pdf datasheet. Datasheet file5: Click here to download 2N3055.pdf datasheet.
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Articles & Projects
Shown below is a simple amplifier circuit, simulated in SPICE, using a Darlington but without the feedback. You can see from the I/V(current is the Y axis and voltage the X axis) curve that at a couple volts or so, the device is in ...
Darlington pair amplifier circuit working merits and applications.
"This is the cheapest 150 Watt amplifier circuit you can get,I think.Based on two Darlington power transistors TIP142 and TIP147 ,this circuit can deliver a blasting 150 W Rms to a 4 Ohm speaker.Enough for you to get rocked?
As well as DIDRC to eliminate digitallygenerated noise, the amplifier's Three-Stage Inverted Darlington Circuitry boosts current flows and reduces distortion.Plenty of good clean power-and a dash of Japanese audio ...
I have attached two simple circuit diagrams of the exact configuration of what I have built. Fig.1 is of the single transistor as a current amplifier and Fig.2 is of the Darlington pair as a current amplifier. Notice how Ic is greater in ...
12watt audio amplifier Homework Help. ... That is not how Homework Help works. You present your design ideas and we provide feedback. We don't do your homework for you. Show us your circuit diagram. .... I'm not sure if the imput resistance is formed of R7||R6||R5 and why the power on the load re...
measuring amplifier 20 Hz - 20 KHz (limited linearity) 0.8 V in 10-15V out
Understanding The Darlington Transistor
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