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LM1875T Stereo Power Amplifier Board 2.0 Dual Channel HIFI 30W+30W with Tone Board
Description:
- GV-TDA2030A-2.0B, Dual channel HIFI amplifier board
- OCL form,double power supply, no output capacitor.
- No output coupling capacitor, good low frequency.
- Upgrade form GV-TDA2030A-2.0B
Parameter
- Output power: 30W+30W
- Standard impedance: 4-16OHm
- Sensitivity: 86dB
- Frequency range: 80Hz-20KHz (-6dB)
- Power input: AC double 12-18VV
- Main board size: 80 x 73 x 30 (mm)
- Recommended transformers: double 12V50W or dual 12V30W
Circuit principle:
- Tone section uses a high bass, respectively, to control the attenuated tone circuit.
- R2,C2,R9,C4,R13,C10,R20,C11,VR1, composed bass to control circuit
- C1,C5,VR2 ,as treble to control circuit
- R4,R15, isolation resistance
- VR3 is volume contorller
- C3,C9, blocking capacitor
- Amplification factor of the circuit is determined by the ratio of R6/R17 to R7/R18
- R8, C7/R19,C14 ,tp prevent ow frequency self excitation of the amplifier
Package List:
- 1 x LM1875T Stereo Power Amplifier Board
