Motorola Hi-Fi Power Amplifier ----- Hi-Fi Power Amplifier

Motorola Hi-Fi Power Amplifier, Hi-Fi Power Amplifier Keywords: power amplifier, power amplifier circuit, HIFI, MJ3001, MJ2501 This is a very simple. The power amplifier of the cost of the cost. HiFi quality. You can have five ways to complete her, just like the chart (from 20W to 80W RMS). Some explanations: - You first want to test the amplification factor hfe or β of the final power tube. If they differ, the magnifier will not give you a clear voice, I use MJ3001 and MJ2501 transistors, their Difference is 5%. - Before boot, you must short the input, enter a current table in the output of the amplifier, then turn on the power, adjust the R13 to change the current table to the micro-training level, if you are lucky, perhaps to reach 0, current meter current at 10 Microspace is very easy to do. Power amplifier circuit diagram: Power circuit: Components and properties: 20/35 W 25/40 w 35/60 W 50/80 W 80/125 w T1 BC546 T2 BC556 T3 (PNP Dalinton) BD898, BD678 BD896, BD676 BDX34 MJ900G 2N6052, MJ2501 T4 (NPN Dalin) BD897, BD677 BD895, BD675 BDX33 MJ1000G 2N6059, MJ3001 C1 10 ~ 12 pf C2 4.7 ~ 5.6 NF C3 (non-polar capacitor) 1 ~ 10 UF C4, C5 2200 UF / 35 V 4700 UF / 35 V 4700 UF / 35 V 4700 UF / 50 V 4700 UF / 50 V R1, R2, R9, R12 10 kΩ R3, R4, R5, R6, R14, R15 3.3 kΩ R7, R8 680 Ω R10 100 kΩ R11 47 kΩ R13 (fine tuning resistance) 10 kΩ F1 (fast) 1, 2 a 1,6 a 2 a 2, 2 a 4 a BR1 B40C1500 B40C2000 B40C2800 B40C3200 B40C5000 Cooler 4,5 2, 7 2,0 1,7 1,5 Transformer secondary voltage (± 20%) 20 + 20 V 20 + 20 V 20 + 20 V 22 + 22 V 22 + 22 V Transformer secondary current 0,8 a 1, 2 a 1,3 a 1,5 a 2, 5 a Power (RMS) 20 W 25 w 35 W 50 w 80 W Music power 35 W 40 w 60 w 80 W 125 w Minimum speaker impedance 8 Ω 8 Ω 8 Ω 8 Ω 4 Ω Power supply voltage (± 20%) ± 25 V ± 25 V ± 25 V ± 30 V ± 30 V Maximum current 0,54 A 0,85 A 1,0 a 1,15 a 2,0 a Enter voltage required when maximum power 1,8 V 1,5 V 1,7 V 1,95 V 1,7 V input resistance 10 kΩ Bandwidth (-3 dB) 0 - 100.000 Hz THD AT 1/2 P 0,04% THD AT PSIN MAX 0,18% Frequently 93 dB I am quite satisfied with this amplifier, she has a good sound quality. Have fun with it!

Our other product:

Professional lightning protection system for Tower	Professional FM Radio Station Equipment Package	FMUSER FU-1000C 1000W FM Transmitter With USB Audio Input Interface
FMUSER 200W FM Radio Broadcasting Package	Hotel IPTV Solution	FMUSER FSN-1000T V5.0 1KW FM Radio Broadcast Transmitter