Tag Archives: BC109

A microphone from the speaker

Schematic Diagrams      Comments Off on A microphone from the speaker

Operation of the circuit. be When entering the power supply circuit for Q1 will work as an amplifier in common base.That matching the input impedance of the Impact of Impact Speaker impedance low.When signal sound into the speakers.Audio is converted to electrical signals through C2.In addition, C2 to prevent voltage… Read more »

Simple preamplifier circuits by transistors

Schematic Diagrams      Comments Off on Simple preamplifier circuits by transistors

If we want good quality sound system,the first thing to consider is that a good pre-amp. Some people say that’s not necessary. But when the low-level audio source. We may need to adjust the sound too high will cause distortion. so should have the preamplifier to amplify a signal up… Read more »

Simple preamplifier circuits by transistors

Schematic Diagrams      Comments Off on Simple preamplifier circuits by transistors

If we want good quality sound system,the first thing to consider is that a good pre-amp. Some people say that’s not necessary. But when the low-level audio source. We may need to adjust the sound too high will cause distortion. so should have the preamplifier to amplify a signal up… Read more »

Simple preamplifier circuits by transistors

Schematic Diagrams      Comments Off on Simple preamplifier circuits by transistors

If we want good quality sound system,the first thing to consider is that a good pre-amp. Some people say that’s not necessary. But when the low-level audio source. We may need to adjust the sound too high will cause distortion. so should have the preamplifier to amplify a signal up… Read more »

Simple preamplifier circuits by transistors

Schematic Diagrams      Comments Off on Simple preamplifier circuits by transistors

If we want good quality sound system,the first thing to consider is that a good pre-amp. Some people say that’s not necessary. But when the low-level audio source. We may need to adjust the sound too high will cause distortion. so should have the preamplifier to amplify a signal up… Read more »

Simple preamplifier circuits by transistors

Schematic Diagrams      Comments Off on Simple preamplifier circuits by transistors

If we want good quality sound system,the first thing to consider is that a good pre-amp. Some people say that’s not necessary. But when the low-level audio source. We may need to adjust the sound too high will cause distortion. so should have the preamplifier to amplify a signal up… Read more »