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50W Amplifier Kit Project based TDA1514A





TDA1514A amplifier circuit

Here the very simple but powerful amplifier kit which built based on TDA1514A amplifier chip. The circuit is for single channel only, you should build two similar circuit for stereo application. A heatsink is a must to be attached on the IC TDA1514A. This circuit can be used as well as stereo amplifiers Bass in a 5.1 system.


Components List:

C1, C3, C4 = 0,47 uF
C2 = 220 pF
C5 = 3.3 uF, 50 v
C6 = 220 uF, 50 v
C7 = 0.022 uF
C8 = 47 uF, 100 v
IC1 = TDA1514
R1 = 680 Ohm
R2, R3 = 20 k
R4 = 470 k
R5  =150 Ohm, 82 Ohm
R6  =3 Ohm
R7  = 82 Ohm, 47 Ohm

Technical details:
  • Input voltage Vcc / Vdd + / - 10 - 30 volts [X3=(+), X6=GND, X7=(-)]
  • 8 A maximum current consumption
  • No load current 60 A
  • Output power, laVcc = + -27.5 B and R = 8 Ohm 40 W (X4 and X5)
  • Input resistance of 20 K (X1 and X2)
  • Frequency response 20 Hz - 25 KHz

The TDA1514A features:
  • Low harmonic, intermodulation, offset voltage distortion
  • Good ripple, Thermal, Safe Operating Area (SOAR) prejection
  • Mute/stand-by facilities
  • Protected against electrostatic discharge
  • No switch-on or switch-off clicks
  • Very low thermal resistance

PCB layout design and PCB layout:

TDA1514A amplifier PCB design layout

TDA1514A amplifier component placement


Amplifier kit preview:

TDA1514A amplifier kit

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