Using only active component (the right and left channel) Philips TDA1521 monolithic integrated circuit, which contains a double line-end audio amplifier completely independent, each capable of providing from 10 to 12 W to the load 8 ohm or 15 W into 4 ohms (30 W music). Voltage gains of the amplifier is fixed at 30 dB.
SPECIFICATIONS :
– Power supply: 12 V symmetrical dual voltage
– Maximum Power Output RMS: 2 x 15W / 4 ohms, 2 x 10 W / 8 ohms
– Maximum power output music: 2 x 30 W / 4 ohms
– Harmonic Distortion: 0.007% (1 W / 1 kHz)
– Input sensitivity: 300 mV / 20 kOhms
– Frequency: 7 Hz to 60 kHz (-3 dB)
– 70 dB for each channel
– Output power (R = 8 ohms): 2 x 10 W RMS
– Output power (R = 4 ohms): 2 x 15 W RMS
– Bandwidth (-3 dB): 7 to 60 000 Hz
– Sensitivity to maximum power (8 ohms): 290 mVrms
– Sensitivity to maximum power (4 ohms): 250 mVrms
– Input impedance: 20 kilohms
– S / N Ratio: 98 dB
– Crosstalk: -70 dB
– High quality stereo amplifier
– Low noise
– Protection against overload
Parts list :
R1 …. 8.2 Ω 1/4 W
R2 …. 8.2 Ω 1/4 W
C1 …. 22 nF ceramic
C2 …. 22 nF ceramic
C3 …. 100 nF multilayer
C4 …. 1 uF 63 V Polyester
C5 …. 1 uF 63 V Polyester
C6 …. 4700 uF 25 V electrolytic
C7 …. 4700 uF 25 Vélectrolytique
D1 …. 1N5404
D2 …. 1N5404
D3 …. 1N5404
D4 …. 1N5404
U1 …. TDA1521
Miscellaneous :
1 …… heatsink (Rth less than 3.3 ° C / W)
2 …… 3MA bolts 12 mm Unless otherwise specified, all
resistors are 1/4 W 5%
Class-D Power Audio Amplifier Using MD7120 MOSFET Driver This is the circuit design of Class-D…
This is the circuit diagram of active antenna amplifier for FM radio device. With only…
This is the schematic design of 400 Watt 70 Volt amplifier capable to deliver about…
This is the circuit diagram of 150W power amplifier which built using power transistors. The…
This is the circuit design of 1000W stereo audio amplifier. It is a very good…
This is the circuit design of 150W car audio amplifier. The circuit is divided in…