Here is the dynamic microphone amplifier circuit diagram. This circuit should be perfect for dynamic microphone…
Dynamic microphones are versatile and ideal for general-purpose use. They use a simple design with few moving parts. They are relatively sturdy and resilient to rough handling. They are also better suited to handling high volume levels, such as from certain musical instruments or amplifiers. They have no internal amplifier and do not require batteries or external power.
Schematic diagram:
Circuit Notes:
With a 3mVpp input signal the output will be 800mVpp. The maximum output voltage was 10Vpp when the input is 50mVpp. The frequencies domain is between 50Hz and 100KHz.
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I have designed and constructed a microphone amplifier circuit using LM301 with a line driver SSM2142 and a line receiver SSM2141.The circuit is supposed to pick up any voice/audio by the mic and send it via 100m Twisted Pair Cable to a PC for recording and analysis.I am using an omnidirectional Yodata Laptop Microphone,but i get nothing on the output.The circuit(amplification etc.) on its own is perfectly working but the audio/voice part is not,cracking my head.I have tried a ready-made Phillips microphone on my circuit and i works perfectly but the mic described for the job turns me down..Please help