Headphone Amplifier by IC TDA2004
A opamp. medium power, here it?s used as amplifier of headphones with possibility drive low loads. It contains in a nutshell two amplifiers. The voltage gain, has been determined in 40dB, from the R3-4 and R11-12, for each channel, respectively. The restriction of bandwidth for each unit is regulated by the combination of R12, C2 and R13, C15, in 22KHZ. The R5, R10 attend to the adaptation of impedance earphones. The resistors R6 and R9 discharge the capacitors C9 and C12, in order that when we connect the headphones in the plug, not we have annoying noise. The circuit has very good characteristics as low distortion, noise and satisfactory frequency response. The requirement of circuit in current is 150mA, roughly, with voltage supply + 15V. The IC1 should be placed on a suitable heatsink.
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Part List |
| R1=120Kohm | R6-9=1.2Kohm | C6-15=3.3nF 100V MKT |
| R2-13=330 ohm | R7-8=1.2 ohm | C7-8-13-14=100uF 1V |
| R3-12=2.2Kohm | C1-4-5=10uF 16V | C9-12=470uF 25V |
| R4-11=27 ohm | C2=100uF 25V | IC1= TDA2004 in Heatsink |
| R5-10=22 ohm | C3-10-11=100nF 100V MKT |
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*** Stereo Headphone Amplifier Kit (Good quality)
Source :: http://users.otenet.gr/~athsam/
headphone_amplifier_with_tda2004.htm
Categories: Power Amplifier Tags: Class AB Amplifier, Head phone amplifier, TDA2004
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Volt supply 11V to 14V, Power output 10W+10W#, for Speaker 2-8 ohm.
circuit TDA2004 Amplifier Car audio stereo OTL 10W+10W
PCB TDA2004 Amplifier Car audio stereo OTL 10W+10W
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