USB Powered power Amplifier for you PC I faced this article when I was looking for simple solution how to increase the output of my integrated sound card of my PC. I don’t know why, but the sound level of it decreased so I can’t normally listen with my headphones. So this article is about [...]

4×22W car audio amplifier based on TDA7384 Download TDA7384 Eagle Files Read more : http://www.scienceprog.com/diy-4x22w-car-audio-amplifier-based-on-tda7384/

A compact audio powerhouse ideal for guitar or PA work or for use as a general-purpose subwoofer or hifi amplifier. Many people prefer Mosfets because of their legendary ruggedness. Altronics had a Mosfet amplifier module which produced 200W into a 4 Ohm load and so we decided to take a look it. It turned out [...]

Parts:R1-3-5-8-10=1Kohm C1=2.2uF 63V TR1=10K TrimmerR2-7-11=100Kohm C2=4.7uF 25V D1-2=IN4002R4-6=4.7Kohm C3-17=47uF 63V IC1=LM391R9-12=100ohm C4-8-9=1nF 100V MKT Q1=BD139R13=47Kohm C5=47nF 100V MKT Q2=BD140R14-15=0.15ohm 5W C6=22pF ceramic Q3=TIP2955R16=1ohm 2W carbon C7-11-12-13=100nF 100V Q4=TIP3055R17=10ohm 1W carbon C10=22pF ceramic L1=See text A power amplifier that is based on the LM391, that is a complete driver of power transistors. It does not need [...]

R1, R101 56 kOhm C1, C101 47 µF/6,3 V, elektrolyt.R2, R11, R102, R111, R16 12kOhm C2, C102 100 nF, fóliovýR3, R103 22 kOhm C3, C103 1 nF, fóliovýR4, R104 6,8 kOhm C4, C104 1 až 3,3 µF/elektrolyt. 16 V nebo fóliovýR5, R105 220 Ohm C5 15 až 22 µF/25 V, elektrolyt.R6, R106 47 kOhm C6 [...]

40W Amplifier by 2N3055+MJ2955The 40W Amp OCL 2N3055+MJ2955 is easy to build,and very inexpensive. To use Power Supply +35V -35V >2A.Transistor 2N3055+MJ2955 must be mounted on heatsink.Can be directly connected to CD players, tuners and tape recorders.

Parts:R1, R2, R5, R6 22 kOhm (SMD 1206)R3, R4 2,2 kOhm (SMD 1206)R7, R8 4,7 Ohm (SMD 1206)P1 4,7 kOhm, potenciometr logaritmický stereo RadiohmC1, C2, C7, C8, C9 100 nF (SMD 1206)C3, C4 100 µF/10 VC5, C6 470 µF/10 VC10 47 µF/16 VIO TDA2822M

The 50W Power Amplifier OCL Mosfet (K1058 + J162) is easy to build,and very inexpensive. To use Power Supply +35V -35V >2A.Mosfet (K1058 + J162) must be mounted on heatsink.Can be directly connected to CD players, tuners and tape recorders.