Tone Control for 150W Car Audio Amplifier

The tone control circuit build based on IC LF353 In stereo mode, we shall have the action of eight loudspeakers which are going to create a very important sound pressure.

Tone Control Scheme

Tone Control PCB Design

150W Car Power Amplifier

The power amplifier is built based single LA47536 power IC for each channel. For stereo channel you need two similar circuit for each modul (tone control and power amplifier)

The LA47536 is a 4-channel BTL power amplifier IC developed for use in car audio systems. The output stage features

• A pure complimentary structure that uses V-PNP transistors on the high side and NPN transistors on the low side to provide high power and superb audio quality.
• The LA47536 includes almost all the functions required for car audio use, including a standby switch, a muting function, and each protection circuit. It also provides a self-diagnosis function (output offset detection).

Power Amplifier Scheme

Power Amplifier PCB Design

The post 150W Car Audio Amplifier appeared first on Amplifier Circuit Design.

Simple design, low cost and easy to build are the advantages of this amplifier circuit which capable to deliver about 20W power audio output, or course it’s enough for the “room” of cars. Take a note that heatsink is required to prevent over heating.

Components List:

R1 = 100K
R2 = 47R
R3 = 100R
R4 = 1R
C1 = 220uF
C2 = 100uF
C3 = 100uF
C5 = 10uF
C6 = 1uF
C7 = 1uF
C8 = 1000uF
C9 = 0.1uF
IC = STK011 , STK015 , STK016

The post Car Subwoofer Amplifier with STK IC appeared first on Amplifier Circuit Design.

With the integrated audio TDA8571J designed for automotive applications, this 40w amplifier circuit can expand the sound of the car radio or connect a portable MP3 player in it. Internally, the chip has eight operational amplifier set on the bridge, allowing each speaker terminal being energized. Dont connect the negative terminal of the mass of the speaker, because they will produce a short circuit on the output.

As usual in these kinds of development, the heat dissipation is an important factor forproper cooling to ensure stable operation, but poor ventilation can destructive circuit.Although it has an internal thermal overheating protection, is still destructive.

If you want to use it at home (not recommended), you should use a 12V source capable of draining up to 250w at 12v. Remember that filtering is a key source of success in anyaudio installation. Use a large electrolytic capacitor to eliminate riple and, in turn, foreliminate the RF ceramic capacitors.

For input using shielded cable and RCA female plugs. To connect to the car radio is recommended that you put between it and the amplifier a passive equalizer, In addition to controlling the tone voice, also can reduce in signal strength.

In the audio car application should be very careful where you get power because the system requires a large amount of power. Placing it on top of the light rail is possible to damage the vehicleelectrical system or, alternatively, you can blow the fuse. A good alternative is to place itdirectly from the battery of the car and switch the power through the relay coil halogenlamps which connected in parallel to the antenna output power or control of existing equipment.

The post Quad amplifier 40W appeared first on Amplifier Circuit Design.

The input IN is connected to the output of the receiver, U output is connected to the speaker as shown on car audio amplifier scheme. It is very important to ensure that the speaker has no connection tothe chassis (ground) if not, the integrated circuit IC1, a TDA 2004 will soon be damaged. For mounting, carefully follow the implementation of the car audio amplifier scheme for the components. The power supply will keep with 12 volts.

Parts list :

All resistors are 1/4 watt unless otherwise stated.
R1 = 100 Ohms
R2 = 1.5 Kohm
R3 = 180 ohms
R4 = 470 ohms
R5 = 10hm
R6 = 10hm
Cl = 0.1 pF pol.
C2 = 1000pFceramique.
C3 = 10uF / 16Velec.
C4 = 0.1 uFpol.
C5 = 0.22 uF pol.
C6 = .22 uF pol.
C7 = .22 uF pol.
IC1 = TDA2004
A heat sink

The post 20w car audio amplifier based TDA 2004 appeared first on Amplifier Circuit Design.

The supply voltage can be between 12 and up to 15 volts. This two way amplifier can also be beneficially used as a BOOSTER for 2 way radio. In this case, it is necessary to place a 3.3 Kohm resistor between the output of the radio and the amplifier input (see diagram). To avoid unpleasant distortion, we must avoid to apply input signals greater than 50 mV.

LIST OF ELECTRONIC COMPONENTS:
All resistors are 1/4 watt unless otherwise stated.
Rl = 680 Ohms
R2 = 10Kohms
R3 = 1 Kohm
R4 = 1 Kohm
R5 = 10Ohms
R6 = 10 Ohms
R7 = 10hm
R8 = 1 Ohm
TR1 = 10 Kohm trimmer
CI = 5.6 nF ceramic.
C2 = 5.6 nF ceramic.
C3 = 2.2 uF16V elec.
C4 = 2.2 uF16V elec.
C5 = 2.2 uF16V elec.
C6 = 100uF16V elec.
C7 = 100uF16V elec.
C8 = 100uF16V elec
C9 = 100nF pol.
C10 = 100nF pol.
C11=100nF pol.
Cl2 = 2200uF16Velec.
IC1 = TDA2004-2005
A heat sink

The post Two way 20 watts audio amplifier appeared first on Amplifier Circuit Design.

5.8 W Audio Power Amplifier Parts list :
R1 : 100K variable
R2 : 27K
R3 : 220
C1 : 4.7uF/50V
C2, C7 : 470u.16V
C4 : 100nF
C5, C6 : 47uF/16V
IC TA7222AP

The post 5.8 W Audio Power Amplifier appeared first on Amplifier Circuit Design.

The post Monoblock Car Amplifier TDA7294 appeared first on Amplifier Circuit Design.

It is obvious that this feature is the ability TDA8560-operate on two pairs of 4 * Ohm speaker can announce one-chip whole interior of the car – a pair of speakers in the doors, a couple on the back of a shelf – and all this with the total capacity – 80 W!

parts list :
DA1 – TDA8560
C1 = C2 = 0,22 mF (0, l, 0,15 mF)
C3 = 470 mF (mF 1 … 1000 U> 16V)
R1 = R2 = 10 k (5,6 12k)arts list

Recommendations:

1) The signal at the input of the car amplifier can be fed to the line-out (if any) or take the signal from input amplifier own radio (after volume control) can also remove the signal from the output resistors on the columns drawn in the diagram the dotted line (R *) is desirable to put in a chip with high-gain), their face value should be 20 … 50 ohms if the input signal amplitude of about ~ 250 mV (standard output) and 100 200 ohms, if the signal is removed from the output to the speakers

2) The Car Amplifier 2x40W at TDA 8560 Q must be installed on the heatsink (not less than 200 cm2)

3) To maintain a dynamic power amplifier is helpful to include parallel power supply (+12 to earth) high-capacity electrolytic capacitor 4700 … 10000 mF x16V then the power will not squander the passage of the peaks of maximum power is strictly prohibited to alter food + and close to the exits to +12 V to ground and to each other in any order

If you connect the amplifier to the woofer, it is recommended to use low-pass, or entrance, or exit (preferably at the entrance) software includes:

Scheme pass filter for Car Amplifier 2x40W at TDA 8560 Q

If the input signal = 200 250 mV, then R * is not put, if the input signal = 3 … 4 V (output for speakers)

then R * is placed and is 100 … 300 Ohm Such a filter has the following parameters cutoff frequency 50Hz, recession – 18 dB / octave

In the case of an car amplifier in the home power supply should have the recommended settings, the transformer with overall capacity of 80 100 W, the secondary winding – for a current to 4 A (Rl = 4 Ohm) or 7.5 A (Rl = 2 ohms) * C – the more the better (ideally 47 000 mF)

The post Car Amplifier Circuit 2x40W based TDA8560Q appeared first on Amplifier Circuit Design.

Features :
· High output power
· Low offset voltage at output (important for BTL)
· Fixed gain
· Good ripple rejection
· Mute/stand-by switch
· Load dump protection
· AC and DC short-circuit-safe to ground and VP
· Thermally protected
· Reverse polarity safe

The post 2x22W Car Audio Amplifier Circuit appeared first on Amplifier Circuit Design.

Key features :

This chip is recommended for use in the entry-level subwoofer in your car. And the scheme presented is optimized for this application. Although, of course, no one bothers to play with it a full signal.

Parts List :
R1,R2,R3 : 10K
R4 : 1K
C1,C2 : 0,22uF
C3 : 10uF/16V
C4, C5 : 10000uF/25v
C6 : 0,1uF
C7 : 4700uF/25V
VT1 : KT3107
HL1 : any
DA1 : TDA1562

The post Car Power Amplifier based TDA1562 appeared first on Amplifier Circuit Design.