Electronics Help Care Amplifier circuit diagram This is a Stereo amplifier circuit diagram using transistors 2SC5200 and 2SA1943. It’s a dual-channel audio amplifier circuit board. left and right channels. Each channel can make 150 watts of output. We can use a minimum 25-0-25 voltage to 50-0-50 voltage. Here needs AC voltage. We can also use other transistors. any type of PNP and NPN transistors.
1 Pair (2SC5200 + 2SA1943) transistoes can make
Using ±35V supply → about 80W – 100W RMS (8Ω). Using ±45V supply → about 120W – 150W RMS (8Ω). Using ±50V supply → up to 150W – 180W RMS (8Ω).
Basic Specification for 2sc5200
- Transistor Type is NPN Power Transistor
- Transistor Collector-Emitter Voltage (Vceo): 230V
- Transistor Collector-Base Voltage (Vcbo): 230V
- Transistor Emitter-Base Voltage (Vebo): 5V
- Transistor Collector Current (Ic): 15A
- The Power Dissipation (Pc): 150W
- The transistor Gain (hFE): 55 – 160
- Transition Frequency is (fT): ~30 MHz.
Basic Specification for 2sa1943
- Transistor Type is PNP Power Transistor
- Transistor Collector-Emitter Voltage (Vceo): 230V
- Transistor Collector-Base Voltage (Vcbo): 230V
- Transistor Emitter-Base Voltage (Vebo): 5V
- Transistor Collector Current (Ic): 15A
- The Power Dissipation (Pc): 150W
- The transistor Gain (hFE): 55 – 160
- Transition Frequency is (fT): ~30 MHz.
A speaker protector is a circuit or device designed to sit between your audio amplifier and your speakers. Its primary job is to act as a “safety fuse” that disconnects the speakers instantly if the amplifier malfunctions, preventing your expensive drivers from burning out.
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