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Description
40dB Silicon Microphone Amplifier Speaker Digital Audio Amplifier Circuit Gain Adjustment Pickup Mini Circuit Amp
Product Description
Adopt silicon microphone, with high signal-to-noise ratio, clearer pickup and better effect. Gain is adjustable. Wide range of uses, such as hearing aids, pickups, conference microphone preamplifiers, etc.
Specification
item
value
Operating voltage
DC 3v-6v
Board size
16mm * 15mm
Maximum output power
40db, (you can also adjust the gain as needed by changing the resistance of R5)
Installation Instructions
Note
R5 is the gain adjustment resistor, the resistance value can be 4.7k-100k (reserved plug-in pad next to the chip resistor, if there is no chip resistor or the welding technology is not good, the plug-in resistor can be used.), the larger the resistance value is , the higher the gain.