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Preamplifier for Microphones Tape Heads(BC548 )

2015-01-03 09:20  
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This article briefly describes the Preamplifier for Microphones Tape Heads (BC548). This principle is easy to understand, but also very practical. Depth understanding of circuit elements, can be more effective to grasp this principle. Do you know the circuit, for example, can understand and buy these components: BC547, BC548 .

This circuit consists of a single transistor as amplifier and it gives a nice amplification to weakest and unipolar signals for feeding to a real amplifier. The center of this circuit is a BC547 OR BC548 transistor and the rest of the circuit is few resistors, and capacitors. The diagram and also thePCBlayout is below.



Figure 1 



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