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2SA1943 PNP Power complementary transistor 2SC5200 NPN Power complementary transistor

2 - Schematic diagram Powerful Mini Audio Amplifier using only 5 Transistors The third is the power stage: It is formed by a pair of differential power transistors, one is the NPN 2SC5200 and the other is the 2SA1943, they are in push-pull mode, configured to work in class AB, with base BIAS diodes.įig.The second is the driver stage: it is formed by the PNP TIP42 transistor, it is used as a current amplifier and serves to drive the output stage.The first is the pre-amplification stage: It is formed by a differential pair set of NPN 2N5551 transistors, they are working as differential pair, which gives a very good stability in the signal sent to the next stage.The amplifier circuit is very simple to assemble, as shown in Figure 2 just below, this amplifier is divided into three basic stages: 100W RMS Power Amplifier With 2 NPN 2SC5200 Transistors At Output + PCB.50W RMS Audio Amplifier with IRF530 and IRF9530 Mosfet + PCB.300W RMS Power Amplifier - 2SC3858 and 2SA1494 Transistors + PCB.200W RMS Power Amplifier With 2SC2500 AND 2SA1943 + PCB.Simple 100W Power Amplifier with TIP142 NPN and TIP147 PNP transistors + PCB.400W Class AB Amplifier using MJL4281A and MJL4302A transistors + PCB.440W Class AB Power Amplifier using Mosfet IRFP9240 and IRFP240 with PCB.160W High Fidelity Amplifier using Mosfet 2SK1058 and 2SJ162 with PCB.

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