Rangkaian TDA1554 Audio Amplifier 2 x 22W BTL

Audio Amplifier Based TDA1554 IC

This audio amplifier circuit works up to 2 x 22Watt with main power IC TDA1554. The circuit has only very few components and works best with a 4 Ohm speaker.

IC TDA1554 must be connected to a heat sink. A computer cabinet fan can also be used in addition. Any way better the cooling better the performance.The circuit roughly draws 6A current at 12 V at full volume.So the power supply must be any thing more than 6A.Up to 18 V can be used

Skema rangkaian TDA1554 audio amplifier
2 x 22W BTL

List Componet

• R1 39K 1/4 Watt Resistor
• C1,C2 10uf/25V Electrolytic Capacitor
• C3 100uf/25V Electrolytic Capacitor
• C4 47uf /25V Electrolytic Capacitor
• C5 0.1uf /25V Ceramic Capacitor
• C6 2200uf/25V Electrolytic Capacitor
• U1 TDA1554 Two Channel Audio Amp Chip
• MIS Heatsink For U1

TDA1554 IC

TA8215 Car Audio Amplifier 15W BTL Stereo

Rangkaian TA8215 Car Audio Amplifier

This is circuit of 15W BTL stereo channel audio power amplifier based IC TA 8215 developed by Toshiba. In this power amplifier circuit, two TA 8215 ICs are used. This is for obtaining four channels that is two channels from each IC. TA 8215 is an IC with power amplifier stages and preamplifier integrated inside it.

The power supply required for this amplifier is single 12 V DC supply. The maximum output power delivered from each channel of this amplifier is 15 W to a 4 ohm speaker and hence the name 4×15 W power amplifier.

Skema rangkaian Car Audio Amplifier
15W BTL Stereo

TA8215 IC

R1 with R2 forms a voltage divider that attenuates the input signal by 24dB. Considering the chip's 50dB gain, that still leaves 26dB overall gain, slightly more than enough to fully saturate the amplifier when the sound card works at maximal output. C1 blocks DC at the preamplifier input. C2 is the ground return of the feedback circuit. These two capacitors need to be in the ratio shown, in order to suppress switching clicks when powering the circuit on and off. The output pins 15 and 16 are connected directly to the speaker, while C7, R6, C8 and R7 provide the proper load phase shifting to avoid high frequency instability.

The power supply is decoupled with a rather small 100uF capacitor. That's enough for higher frequency decoupling, and at lower frequencies anyway the large capacitors in the PC power supply are fine. Pins 10 and 17 supply the power amplifiers, while pin 9 provides power to the pre stages. This power is filtered by C3. The power control pin 4 allows to shut down the amplifier, an option not used here, so it's tied to 12V. Pin 1 is a muting input, also not used, and left open.

12 Volt Audio Amplifier Menggunakan Transistor

Rangkaian 12 Volt Audio Amplifier

This circuit power amplifier was deliberately designed using no ICs and in a rather old-fashioned manner in order to obtain good harmonic distortion behavior and to avoid hard to find components. The amplifier(s) can be conveniently supplied by a 12V wall plug-in adapter. Closing SW1 a bass-boost is provided but, at the same time, volume control must be increased to compensate for power loss at higher frequencies. In use, R9 should be carefully adjusted to provide minimal audible signal cross-over distortion consistent with minimal measured quiescent current consumption; a good compromise is to set the quiescent current at about 10-15 mA.To measure this current, wire a DC current meter temporarily in series with the collector of Q3.

Skema Rangkaian 12 Volt Audio Amplifier

List Component

P1_____________10K Log.Potentiometer
R1,R2__________33K 1/4W Resistors
R3_____________33R 1/4W Resistor
R4_____________15K 1/4W Resistor
R5,R6___________1K 1/4W Resistors
R7____________680R 1/4W Resistor
R8____________120R 1/2W Resistor
R9____________100R 1/2W Trimmer Cermet
C1,C2__________10µF 63V Electrolytic Capacitors
C3____________100µF 25V Electrolytic Capacitor
C4,C7_________470µF 25V Electrolytic Capacitors
C5_____________47pF 63V Ceramic Capacitor
C6____________220nF 63V Polyester Capacitor
C8___________1000µF 25V Electrolytic Capacitor
D1___________1N4148 75V 150mA Diode
Q1____________BC560C 45V 100mA PNP Low noise High gain Transistor
Q2____________BC337 45V 800mA NPN Transistor
Q3____________TIP31A 60V 4A NPN Transistor
Q4 ___________TIP32A 60V 4A PNP Transistor
SW1___________SPST switch

12 Volt Audio Amplifier IC TDA7222AP

12 Volt Audio Amplifier Used IC TDA7222AP

This is the circuit diagram of a 6W audio power amplifier using the IC TA7222AP. IC TDA7222AP is an excellent integrated audio amplifier which can deliver 5.8W to a 4 Ohms load at 12V supply voltage. The IC has very good features like, muting function, low distortion, high ripple rejection, short circuit protection, thermal shut down etc. This amplifier can be operated from 8 to 12V and this makes it ideal for car radio applications.

Skema Rangkaian 12 Volt Audio Amplifier IC TDA7222AP

Note

• Use 12V DC for powering the circuit.
• The IC must be heatsinked.
• Speaker can be a 4 ohms one.
• For optimum performance input and output must be separately grounded.

TA7222AP pin out

Pin Name Description
1 Vcc Supply Voltage
2 RR Ripple Reject
3 MC Muting control
4 OP AF Signal Input
5 FB FB Filter
6 GA Gain adjust
7 GND Ground
8 GND Ground
9 OP AF Output
10 BS BootStrap
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Car Amplifier With Active Crossover

150W amplifier circuit car is equipped with Active Crossover and this circuit using the chip that has a 4-channel power amplifier. Active Crossover function is used to separate the tone of the bass, midrange and treble, the output of direct Active Crossover can be strengthened by the power amplifier.

Power Chip 4-channel amplifier in use is SANYO LA47536 output with output power up to 150W, whereas for Active Crossover using LF353 from National Semiconductor.

Block diagram car audio amplifier system

Rangkaian Three band car audio active crossover

Rangkaian car audio amplifier 4 ch

Features :

• Internally trimmed offset voltage: 10 mV
• Low input bias current: 50pA
• Low input noise voltage: 25 nV
• Low input noise current: 0.01 pA
• Wide gain bandwidth: 4 MHz
• High slew rate: 13 V/us
• Low supply current: 3.6 m
• High input impedance: 1012.
• Low total harmonic distortion : <>
• Low 1/f noise corner: 50 Hz
• Fast settling time to 0.01%: 2 us

Maximum Ratings IC power LA47536

Maximum supply voltage

• VCC max1 No signal, t = 1 minute 26 V
• VCC max2 With an input signal applied 18 V

Maximum output current: 4.5 A/ch
Allowable power dissipation Pd max: 50 W
Operating temperature: –40 to +85 °C
Storage temperature: –40 to +150 °C

Source

6 watt Stereo Amplifier IC LA4440

There is a 6 watt Stereo Amplifier based IC LA4440. This circuit very simple because uses very less components other than the IC LA4440.

Skema rangkaian stereo amplifier IC LA4440

Features IC4440:

Built-in 2 channels (dual) enabling use in stereo and bridge amplifier applications.
Dual : 6Watt *2 (typ.)Bridge : 19Watt (typ.)
Minimun number of external parts required.
Small pop noise at the time of power supply ON/OFF and good starting balance.
Good ripple rejection : 46dB (typ.)
Good channel separation.
Small residual noise (Rg=0).
Low distortion over a wide range from low frequencies to high frequencies.
Easy to design radiator fin.
Built-in audio muting function.
Built-in protectors.
a. Thermal protector
b. Overvoltage, surge voltage protector
c. Pin-to-pin short protector

Layout IC LA4440

Pin

1 NF1
2 IN 1
3 Preamp. GND
4 Audio Muting
5 DC
6 IN2
7 NF2
8 Power AMP GND2
9 B.S2
10 OUT2
11 Vcc
12 OUT1
13 B.S1
14 Power AMP GND1

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19 Watt Bridge Amplifier IC LA4440

Here is a circuit Bridge 19 watt amplifier using IC LA4440 from Sanyo.It uses very less components other than the IC LA4440.A very high quality circuit with respect to its cost.

Skema rangkaian 19 watt bridge amplifier

Component List

U1...................IC LA4440
R1...................2K2
RV1.................Potensiometer
C1...................100nF
C2, C3............47uF
C4..................2u2
C5..................100uF 25V
C6..................2200uF 25V
C7, C8...........47uF 25V
SP1................4ohm 25W


the IC LA 4440 is wired as a bridge amplifier to deliver a 19 W Rms on a 4 Ohm speaker. The IC has built in thermal, over voltage and short circuit protection.The IC also incorporates a audio muting function,but that is not used here.

Note:
Use a 12 V DC/ 3 Ampere current power supply .
Don’t forget to fit a proper heat sink with IC.
Use a 4 Ohm speaker as.

Layout PCB Stereo 19 Watt Bridge Amplifier

IC Power LA4440



Data IC LA4440

Maximum supply voltage.............................18 V.
Allowable power dissipation Pd max............15 W.
Operating temperature Topr........................–20 to +75.
Storage temperature Tstg............................–40 to +150.
Voltage gain VG..........................................49.5 to 53.5.
Output power PO....................................... Stereo 06 W, Bridge 19 W.
Input resistance ri ............................. ....... 30kOhm.
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12 volt Mono Amplifier

This is circuit amplifier contains only an op-amp and four transistors (easily available from your electronics junk box). the op-amp used is uA 741 which produces the required gain.The four transistors are wired as complementary Darlington’s which produces the drive for the speaker.

Skema Rangkaian 12 volt Amplifier

The voltage drop across the resistors R2 and R3, are used as the input of the Darlington pairs . As the input current to the op-amp depends on the level of the signal op amp is amplifying the voltage drop across the resistors R2 and R3 will be proportional to the input signal.These voltage drops are given to the base of Darlington pairs. The amplification is stabilized as a result of the negative feedback from the junction of collectors of Q2 and Q4. The theory may seem little awkward for you.But its working good.Such a simple but stable circuit as this can produce a reasonable output of 12W on a 4 Ohm speaker.


IC Op-Amp UA741

The UA741 is a high performance monolithic operational amplifier constructed on a single silicon chip. The high gain and wide range of operating voltages provide superior performances in integrator, summing amplifier and general feedback applications. The internal compensation network (6dB/ octave) insures stability in closed loop circuits.




Data max Ic UA741

* Symbol Parameter UA741M UA741I UA741C Unit.
* Supply voltage (VCC) ±22 V.
* Differential Input Voltage (Vid ) ±30 V.
* Input Voltage (Vi ) ±15 V.
* Power Dissipation (Ptot) 500 mW.
* Storage Temperature Range (Tstg) -65 to +150 °C.
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