TDA2030 8w Amplifier

Download this schematic diagram.




Download list datasheet semiconductor parts. (PDF Format)

1. TDA2030
2. IN4001


Notes

Although the TDA2030 is capable of delivering 20 watts of audio power, I deliberately reduced the output to about 8 watts to drive 10 watt speakers. This is more than adequate for a smaller room. Input sensitivity is 200mV. Higher input levels naturally will give greater output, but no distortion should be heard. The gain is set by the 47k and 1.5k resistors. The TDA2030 IC is affordable and makes a good replacement amplifier for low to medium audio power systems. Incidentally, it is speaker efficiency that determines how "loud" the sound is. Speaker efficiency or sound pressure level (SPL) is usually quoted in dB/meter. A speaker with an SPL of 97dB/m will sound louder than a speaker with an SPL of 95dB/m.

2 Way Cross-Over 3500 Hz (bass and treble)

This is 2 way cross-over for your speaker system. This circuit will handle 2 speaker that are woofer (low frequency) an tweeter (high frequency).

The result will shown as below picture:


Here the schematic diagram of the circuit:

Loudspeaker System Crossover Network

Building a crossover for your speaker system is easy. Here the schematic diagram:

Notes:

• Capacitor must be non-polar capacitor types with a voltage rating of 50 volt or more (preferably 100 volt).
• Capacitor may be paralled to achieve specified values.
• Inductors should be air core. Do not mount inductors in top of each other.
• Resistors should be 100 Watts or more.

Download the schematic diagram in PDF format

60 Watt Amplifier using TDA2052

This is HiFi audio amplifier system. This amplifier is AB class amplifier and has very low distortion that's why this amplifier can be used for HiFi audio system. TDA2052 has mute and st-by functions so it can be controlled by external digital circuits. Very high temperature and output short circuit protections are included. You should use a heatsink to dissipate the excess heat.

Download this schematic diagram.

Download datasheet semiconductor component. (PDF Format)

1. TDA2052

Functions of the Components:

1. R1 - Input Impedance
2. R2,R3 - Gain (32dB)
3. R4 - Input Impedance in Mute Mode
4. R5 - Standby Transition Time
5. R8 - Output Frequency Balancing
6. R9,R10 - Discharge Resistors
7. C1 - Input Coupling Capacitor
8. C3 - Feedback Coupling Capacitor
9. C4 - Standby Transition Time
10. C5 - Output Frequency Balancing
11. C6,C7 - Supply Stabilizing Capacitors
12. C9,C10 - Supply Filter Capacitors

Component List:

Component	Value	Number
R1,R2,R4,R5	11k ¼ W	4
R3	560, ¼ W	1
R6	7.5 K, ¼ W	1
R7	1 K, ¼ W	1
R8	4.7 , ¼ W	1
R9,R10	1.2 K, ¼ W	2
C1	2 uF/25 V	1
C3,C4	10 uF/25 V	2
C5,C9,C10	100 nF	3
C6,C7	1000 uF/40 V	1
U1	TDA2052	1

35W RMS x 3-Channel Power Amplifier System.

Design Objectives This design is intended to drive the rear (stereo) and center channel speakers for surround-sound applications. This project combined with the 60W+60W power amplifier, which will drive the main stereo (front) speakers, gives a full 5 channel surround sound systems (Total power = 225W RMS). The power supply circuitry, PCB size and dimension should be designed to match nicely with the 60W+60W power amplifier so that later they may be nicely cased togather.

System Operation & Description The LM4781 3-channel audio power amplifier are configured as non-inverting amplifier which has a gain of 20V/V per channel, which is high enough to maintain stability and not too high until increasing the noise and THD+N performance. The inputs are taken from the RCA jacks which then feed to three high quality 1uF metallized polyester capacifor with 63V rating. The outputs are wired to the speaker terminals directly.

The schematic diagram is taken straight out from the National Semiconductor's referance PCB design schematic. However I have omitted the muting switch and replaced it with the soft start circuit, as explaned in the LM4781 datasheet. I have also added the L//R network (L=0.7uH, R=10 ohms 2W) at all the outputs.

For detail all discription, click here.