- Working Voltage: DC 5V15V
- Board Size: 33mm x 25mm
- Product type: Electronic Modules
You can change the magnification, as follows: R7 and R5 are the gain set resistances ( delivery gain default is about 5). However you can change the audio gain according to your needs by changing these two resistors from 5k to 47K, The greater the resistance, the higher the audio gain will be. If you are using radial lead resistors, then remove the original chip resistors from the circuit board and solder the leads into both sides of the pads provided on the circuit board.
Small size design, SMT process, input and output coupling capacitor using imported nonpolar brand capacitors, op amp using feverlevel AD828 chip.
Notice: the board without voltage regulation function, it is best to use a regulated power supply or battery powered, otherwise there may be interference.
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