Showing posts with label 18w. Show all posts
Showing posts with label 18w. Show all posts
Thursday, November 13, 2014
TDA2030 18W 18W Stereo Hi Fi Audio Amplifier Diagram Circuit
2 x 18W Hi-Fi Stereo Power Amplifier based around two TDA2030 ICs. It has good input sensitivity, low distortion, good operating stability and full protection against overloads and output short-circuits. It can be used as a booster amplifier for existing small systems or to drive a second pair of speakers besides the ones already connected to the system. The board needs a symmetrical power supply of ±18Vdc/3A and can be connected to loads of 8 or 4 Ohm. Large heat sink is required for this circuit. Diagram shown below indicates only left channel. Make two circuits for for stereo version.Picture of the project:
18+18 Watt Hi-Fi Stereo Audio Amplifier Circuit Diagram
Circuit Diagram:
Parts:R1 = 22K
R2 = 680R
R3 = 22K
R4 = 1R-1w
D1 = 1N4001
D2 = 1N4001
C1 = 1uf-25V
C2 = 22uF-25V
C3 = 100nF-63V
C4 = 100nF-63V
C5 = 100uF-25V
C6 = 100uF-25V
C7 = 220nF-63V
IC = TDA2030If it does not work:
Technical Specifications:
18+18 Watt Hi-Fi Stereo Audio Amplifier Circuit Diagram
Circuit Diagram:
Diagram Shows Only One Channel
Parts:R1 = 22K
R2 = 680R
R3 = 22K
R4 = 1R-1w
D1 = 1N4001
D2 = 1N4001
C1 = 1uf-25V
C2 = 22uF-25V
C3 = 100nF-63V
C4 = 100nF-63V
C5 = 100uF-25V
C6 = 100uF-25V
C7 = 220nF-63V
IC = TDA2030If it does not work:
- Check your work for possible dry joints, bridges across adjacent tracks or soldering flux residues that usually cause problems.
- Check again all the external connections to and from the circuit to see if there is a mistake there.
- See that there are no components missing or inserted in the wrong places.
- Make sure that all the polarized components have been soldered the right way round.
- Make sure the supply has the correct voltage and is connected the right way round to your circuit.
- Check your project for faulty or damaged components.
Technical Specifications:
- Supply voltage = ±18Vdc/3A symmetrical (see text)
- Current consumption = 3A maximum
- Input impedance = 500K Ohms
- Input sensitivity = 250 mV
- Signal to noise ratio = 80 dB
- Frequency response = 20 - 20,000 Hz ± 1 dB
- Distortion = 0.5 % maximum
- Load impedance = 4 - 8 ohm
Friday, October 17, 2014
18W Car Stereo Amplifier Rise
This automobile stereo amplifier project is a class AB audio power amplifier using the Hitachi HA13118 module. It not only can be used in automobile application but also in any transportable or home amplifier process. It is simple to construct & has a maximum of outside parts. The module has a high power output from a low voltage supply using the bridge tied load system, & a high gain of 55dB.
This project will be useful in applications where the input signal is a low level, without requiring the use of a separate pre-amplifier. This IC module has a built in surge protection circuit, thermal shutdown circuit, ground fault protection circuit & power supply fault protection circuit making it reliable.
This project will be useful in applications where the input signal is a low level, without requiring the use of a separate pre-amplifier. This IC module has a built in surge protection circuit, thermal shutdown circuit, ground fault protection circuit & power supply fault protection circuit making it reliable.
The Specifications of this project
D.C. Input : 8 – 18V at 1-2 A
Power output : 18W maximum, 4 ohm load, 18V DC supply
S/N ratio : > 70 dB
THD : < 0.2% @ 1W
Freq. Response : ~ 30 Hz to 30 kHz, –3 dB
Input level : < 25 mV, for full output (G > 50dB)
Input Impedance : ~ 30 k ohm
D.C. Input : 8 – 18V at 1-2 A
Power output : 18W maximum, 4 ohm load, 18V DC supply
S/N ratio : > 70 dB
THD : < 0.2% @ 1W
Freq. Response : ~ 30 Hz to 30 kHz, –3 dB
Input level : < 25 mV, for full output (G > 50dB)
Input Impedance : ~ 30 k ohm
The supply voltage necessary for this project is 8 -18V DC, at least one to two Amps. Maximum output power will only be obtained with a power supply of 18V at greater than two A, using a four ohm speaker. The power supply ought to be well filtered to reduce mains hum, a regulated supply will reduce noise even further. Additional filtering is unnecessary if operating from a battery supply.
Circuit Diagram Description
Most of the circuitry is contained within the amplifier module. C10 is the input coupling capacitor and blocks DC from the input. C11 bypasses any RF which may be present at the input. C1 & C2 provide an AC ground for the inverting inputs of the IC. R1/C7 and R2/C8 provide a high frequency load for stability with difficult speakers. C five & C six provide bootstrap feedback for the IC. C9 & C12 provide power supply filtering.
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Most of the circuitry is contained within the amplifier module. C10 is the input coupling capacitor and blocks DC from the input. C11 bypasses any RF which may be present at the input. C1 & C2 provide an AC ground for the inverting inputs of the IC. R1/C7 and R2/C8 provide a high frequency load for stability with difficult speakers. C five & C six provide bootstrap feedback for the IC. C9 & C12 provide power supply filtering.
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An externally mounted logarithmic potentiometer of between 10k ohm and 50k ohm, is used depending on the desired input impedance. The impedance ought to be keep as high as feasible for a guitar amp, unless using a separate pre-amp. Make sure-that the heat sink is mounted to the module.
Wednesday, September 10, 2014
18W Audio Amplifier
This is an audio amplifier which gives 18w. so you can enjoy with this..I have tested this so you will be able to get maximum results
Amplifier parts:
P1_____________22K Log. Potentiometer (Dual-gang for stereo) R1______________1K 1/4W Resistor
R2______________4K7 1/4W Resistor
R3____________100R 1/4W Resistor
R4______________4K7 1/4W Resistor
R5_____________82K 1/4W Resistor
R6_____________10R 1/2W Resistor
R7_______________R22 4W Resistor (wirewound)
R8______________1K 1/2W Trimmer Cermet (optional) C1____________470nF 63V Polyester Capacitor
C2,C5_________100µF 3V Tantalum bead Capacitors
C3,C4_________470µF 25V Electrolytic Capacitors
C6____________100nF 63V Polyester Capacitor
D1___________1N4148 75V 150mA Diode
IC1________TLE2141C Low noise, high voltage, high slew-rate Op-amp Q1____________BC182 50V 100mA NPN Transistor
Q2____________BC212 50V 100mA PNP Transistor
Q3___________TIP42A 60V 6A PNP Transistor
Q4___________TIP41A 60V 6A NPN Transistor
J1______________RCA audio input socket
Power supply parts:
R9______________2K2 1/4W Resistor
C7,C8________4700µF 25V Electrolytic Capacitors
D2_____________100V 4A Diode bridge
D3_____________5mm. Red LED
T1_____________220V Primary, 15 + 15V Secondary, 50VA Mains transformer PL1____________Male Mains plug
SW1____________SPST Mains switch
Notes:
* Can be directly connected to CD players, tuners and tape recorders. * Do not exceed 23 + 23V supply. * Q3 and Q4 must be mounted on heatsink. * D1 must be in thermal contact with Q1. * Quiescent current (best measured with an Avo-meter in series with Q3 Emitter) is not critical. * Adjust R3 to read a current between 20 to 30 mA with no input signal. * To facilitate quiescent current setting add R8 (optional). * A correct grounding is very important to eliminate hum and ground loops. Connect to the same point the ground sides of J1, P1, C2, C3 & C4. Connect C6 to the output ground. * Then connect separately the input and output grounds to the power supply ground.
Technical data:
Output power: 18 Watt RMS into 8 Ohm (1KHz sine wave) Sensitivity: 150mV input for 18W output Frequency response: 30Hz to 20KHz -1dB Total harmonic distortion @ 1KHz: 0.1W 0.02% 1W 0.01% 5W 0.01% 10W 0.03% Total harmonic distortion @10KHz: 0.1W 0.04% 1W 0.05% 5W 0.06% 10W 0.15% Unconditionally stable on capacitive loads
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