Micro DC 5V-12V Electret Amplifier MIC Condenser Mini Microphone Amplifier Board For Sale

Micro DC 5V-12V Electret Amplifier MIC Condenser Mini Microphone Amplifier Board


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Micro DC 5V-12V Electret Amplifier MIC Condenser Mini Microphone Amplifier Board:
$3

  • Instructions:
    1. Amplifier board IN and GND use shielded cable access electret microphone, access to the attention of the polarity, the electret after the reverse will be very little or no sound;
    2. Amplifier OUT board connected speakers, speakers away from the microphone, in order to avoid self-excited noise;
    3. Power amplifier board positive and negative access 5 ~ 12V DC power supply, please do not reverse, otherwise it will burn out the module;
    4. Amplifier board comes with a volume trimmer potentiometer, if you feel the sound is too large or too small can try to adjust.

    Precautions:
    1. Soldering must be grounded when the soldering iron;
    2. Do not reverse the polarity of the input power supply;
    3. Output speakers away from the microphone;
    4. Try to use the battery power, if you use the adapter, it is best in the power supply in parallel with the appropriate capacity of the capacitor in order to eliminate the introduction of power interference. Mituto input to make use of shielded wire, can effectively reduce the interference signal.

    Specifications:
    Operating voltage: 5V-12V (voltage below 5V sound will be significantly reduced, the limit voltage can not exceed 15V)
    Operating current: 1mA (static) ~ 150mA (max)
    Output speaker impedance: 4 Ω-32 Ω(impedance high-sound, high efficiency)
    Support the speaker power: 0.5W-25W (In fact, any power speaker can be used, the volume and the speaker power is not much relationship, as long as greater than the power amplifier output rating on the line)
    Output power: 750mW (max)
    Input support: electret, microphone, condenser microphone, moving coil microphone, Audio signal.
    Used for microphone preamplifier effect good, noise and AC ripple is very low, the output signal voltage greater than 1V or more, to promote the power amplifier signal strength.
    Size: 2.3x1.4cm/0.91x0.55"
    Quantity: 1 Pc
  • Note:
  • 1.Transition: 1cm=10mm=0.39inch
  • 2.Please allow 0-3mm error due to manual measurement. pls make sure you do not mind before you offer.
  • 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package includes:

  • 1 x Ultra-Miniature Electret Microphone Amplifier Board(No Retail Package)


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