Hifi transistor headphone amplifier

This is Hifi transistor headphone amplifier circuit uses the principle enlarges current of the transistor at the beginning by use , 3 transistors. Which first perform be pre amp and next 2 again build model complementary which impedance of the circuit will that about 500 ohm and have amplifier rate 5 equal it give output power about 50 mW.

When entering power supply 9 volt, reach the circuit and feed input signal come in change C1 coupling signal go to reach bass pin (B) of Q1. By Q1 will enlarge a signal gives the power goes up in the one level for go to drive Q2 and Q3 work enlarge current get more and more. Which Q2 and Q3 will build the circuit model complementary. By have R5 and R6 build serial prevent stay for heal the stability of current be stable. From that time a signal output change C2 for lead go out be usable and the output signal. One part fed get back to change , R1 , come to reach input at bass pin (B) of Q1 for the circuit has good stability.

Hifi transistor headphone amplifier

Some time a good ideas may not have one. The circuit below may be fond of you.

Transistor Headphone Amplifier circuit using BC109

Headphone Amplifier using Transistor-BC109

Here is classic Headphone Amplifier because The important part of the circuit is Transistor BC109.
I like this circuit it very good for play music classic.

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Low noise headphone amplifier circuit


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Gideon Rainstorm

can i conect to it an 0.5W , 8 ohm speaker ? it will be ok ?


Hello I need to design a headphone amplifier to the following spec. I am quite new to electronics and was wondering if you would help me with this. I like your designs but have certain criteria I must meet. I want to use transistors so it forces me to learn about the components and how they work. I am just unsure where to start while meeting the spec. The specification of the amplifier is that it should: • Provide an improved sound quality over the un-amplified output of your MP3 player. • Have an input impedance of at least 100kΩ.… Read more »

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