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160 Watts Stereo Amplifier C5198 & A1941


1. 2×C5198/ D718 (NPN) Transistor.
2. 2×A1941/ B688 (PNP) Transistor.
3. 4×BD139 (NPN) Transistor.
4. 2×BD140 (PNP) Transistor.
5. 4×BC558B (PNP) Transistor.
6. 4×10uF capacitor 50/63V.
7. 2×100uF capacitor 50/63V.
8. 4×100pF (101) capacitor 50/100V.
9. 4×470pF (471) capacitor 50/100V.
10. 2×4700uf capacitor 50V.
11. 6×22kΩ resistor 1/4W.
12. 4×3.3kΩ resistor 1/4W.
13. 2×1.5kΩ resistor 1/4W.
14. 2×470Ω resistor 1/4W.
15. 2×33Ω resistor 1/4W.
16. 4×10Ω resistor 1/2W.
17. 4×0.22Ω/ 0.25Ω /0.33Ω/ 0.47Ω resistor 5W.
18. 4×1N4007 Diode.
19. 1×3 pin connector Base/ Socket 2.54 mm.
20. 2×2 pin screw terminal.
21. 1×3 pin screw terminal.
22. 1×Bridge Rectifier GBU1508/ GBU808.

License► ©Technical Mriganka. You can't use this PCB Layout and Gerber File for commercial purpose. You can use this PCB layout and Gerber file only for Educational and DIY projects.

PCB Layout & Schematic -

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How to make PCB by ironing method

For make PCB you need PCB layout. Download the PCB layout and print it by laser printer on photo paper. Then cut the PCB layout. Then press the PCB layout by iron on copper clad board. Press the iron 10-15 minutes. Then leave the PCB for cool down 10 minutes. When the PCB will cool, put the PCB in water and move the PCB layout to copper clad board. Then put the PCB in ferric chloride [FeCl3+H2O] for etching 10-15 minutes. when etching will end, clean the PCB by water. Then make hole on PCB. And then press the upper side print of PCB. Now your PCB is ready, mount components by instruction.

How to test this Amplifier

Series light test - After complete this board don't forget to series light test. When you will on this amplifier via series light, it glow for some time (1 - 2 sec). Then series light will turned off fully. If the series light will fully turned off, then check the voltages.

Bias - Then check Biasing of this amplifier. Connect the black probe of multimeter, on Ground and red probe on BD139 Collector. You get = - 0.5 to - 0.7V

Output & Input - Then check Speaker Output and Audio Input voltage. Here you get no voltages 0.00V. If you get same voltages, then connect preamplifier to input and connect speaker to output.

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