Showing posts with label audio. Show all posts
Showing posts with label audio. Show all posts
Wednesday, November 5, 2014
High Voltage 3 Watt Audio Power Amplifier
The LM4954 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 2.4 Watts of continuous average power to an 8
BTL load with less than 1% THD+N from a 7VDC power supply. Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal number of external components. The LM4954 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary requirements.
BTL load with less than 1% THD+N from a 7VDC power supply. Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal number of external components. The LM4954 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary requirements.High Voltage 3 Watt Audio Power Amplifier Circuit Diagram
The LM4954 features a low-power consumption global shutdown mode which is achieved by driving the shutdown pin with logic low. Additionally, the LM4954 features an internal thermal shutdown protection mechanism.
The LM4954 contains advanced pop & click circuitry which eliminates noises that would otherwise occur during turn-on and turn-off transitions.
The LM4954 is unity-gain stable and can be configured by external gain-setting resistors.
Key Specification:
| Wide Power Supply Voltage Range | 2.7 <= VDD <= 9V |
| Output Power: VDD = 7V, 1% THD+N | 2.4W (typ) |
| Quiescent power supply current | 3mA (typ) |
| PSRR: VDD = 5V and 3V at 217Hz | 80dB (typ) |
| Shutdown power supply current | 0.01µA (typ) |
Features:
Friday, October 17, 2014
7 Watt Audio Power Amplifier Circuit Schematic
This small amplifier is constructed around the TDA2003 IC, capable of delivering 4Wrms at 4ohms. The TDA 2003 has improved performance with the same pin configuration as the TDA 2002. The additional features of TDA 2002, very low number of external components, ease of assembly, space and cost saving, are maintained. The device provides a high output current capability (up to 3.5A) very low harmonic
and cross-over distortion. Completely safe operation is guaranteed due to protection against DC and AC short circuit between all pins and ground, thermal over-range, load dump voltage surge up to 40V and fortuitous open ground. A conventional direct current can be connected as supply.
Circuits picture:
Circuit diagram:
Parts:
R1 = 470R
R2 = 47R
R3 = 100R
R4 = 1R
C1 = 1822pF
C2 = 100nF-63V
C3 = 100nF-63v
C4 = 10uF-25V
C5 = 470uF-25V
C6 = 1000uF-35v
C7 = 1000uF-35V
IC1 = TDA2003
Specifications:
Read More..
and cross-over distortion. Completely safe operation is guaranteed due to protection against DC and AC short circuit between all pins and ground, thermal over-range, load dump voltage surge up to 40V and fortuitous open ground. A conventional direct current can be connected as supply.
Circuits picture:
Front View of 7 Watt Audio Power Amplifier
Circuit diagram:
7 Watt Audio Power Amplifier Circuit Diagram
Parts:
R1 = 470R
R2 = 47R
R3 = 100R
R4 = 1R
C1 = 1822pF
C2 = 100nF-63V
C3 = 100nF-63v
C4 = 10uF-25V
C5 = 470uF-25V
C6 = 1000uF-35v
C7 = 1000uF-35V
IC1 = TDA2003
Specifications:
- Music power output: 7W / 4ohm
- RMS output: 3.5W / 4ohm or 2W / 8ohm
- Total harmonic distortion: 0.05% (1W / 1kHz)
- Frequency response: 20Hz to 20kHz (-3dB)
- Signal/noise ratio: 86dB (A weighted)
- Input sensitivity: 40mV / 150Kohm
- Overload and short-circuit protected
- Supply voltage: 15V DC (8 to 18V DC possible) / 0.5A
- Dimensions: 2.2 x 1.4"
25W Audio Power Amplifier Circuits Diagram
This audio power amplifier project is based on LM1875 amplifier module from National Semiconductor. It can deliver up to 30W of power using an 8 ohm load & dual 30V DC power supplies. It is designed to operate with maximum outside parts with current limit & thermal shutdown protection features . Other features include high gain, quick slew rate, wide power supply range, giant output voltage swing & high current capability.
Summary of the audio amply-fire features:
Summary of the audio amply-fire features:
- Low distortion: 0.015%, 1 kHz, 20 W
- Wide power bandwidth: 70 kHz
- Wide supply range 16V-60V
- Up to 30 watts output power
- Internal output protection diodes
- Protection for AC & DC short circuits to ground
- 94 dB ripple rejection
- Plastic power package TO-220
25V Power Supply
The schematic below shows how the +25V DC & -25V DC are obtained. In order to provide power supply for two stereo amplifiers, a power transformer rating of 80VA with 240V/36V middle tapped secondary winding is used. The secondary output of the transformer is rectified by using 1N5401 diodes together with four electrolytic capacitors to smoother the ripple voltage. A fuse & a varistor are connected at the primary input to protect the circuit against power surge.
The schematic below shows how the +25V DC & -25V DC are obtained. In order to provide power supply for two stereo amplifiers, a power transformer rating of 80VA with 240V/36V middle tapped secondary winding is used. The secondary output of the transformer is rectified by using 1N5401 diodes together with four electrolytic capacitors to smoother the ripple voltage. A fuse & a varistor are connected at the primary input to protect the circuit against power surge.
Audio Amplifier Module
The +25V & -25V DC power supply are connected to the audio amplifier module through a 2A fuse with the peripheral devices shown in the schematic below. The audio input signal to be amplified is coupled to pin one of LM1875 through the resistor R1 and electrolytic capacitor E5.
The +25V & -25V DC power supply are connected to the audio amplifier module through a 2A fuse with the peripheral devices shown in the schematic below. The audio input signal to be amplified is coupled to pin one of LM1875 through the resistor R1 and electrolytic capacitor E5.
The output signal at pin four of LM1875 can be used to directly drive a 8 ohm loudspeaker. Resistor R6 and capacitor C5 prevent-the capacitance developed at the long speaker leads from driving the amplifier in to High Frequency Oscillation.
A heat-sink with a thermal resistance rating of one.4 Cecilius/Watt or better must be used or else the amplifier module will-be cut-off from operation due to the heat that will build up in the coursework of the operation of the amplifier. Take note that the heat sink tab on the IC module is internally connected to the -25V power supply hence it must be isolated from the heat sink by the use of an insulating washer. If this is not done, the negative rail will be shorted to ground.
A heat-sink with a thermal resistance rating of one.4 Cecilius/Watt or better must be used or else the amplifier module will-be cut-off from operation due to the heat that will build up in the coursework of the operation of the amplifier. Take note that the heat sink tab on the IC module is internally connected to the -25V power supply hence it must be isolated from the heat sink by the use of an insulating washer. If this is not done, the negative rail will be shorted to ground.
Monday, October 13, 2014
STA575 200 watt stereo power audio amplifier circuit
This power audio amplifier electronic project is based on the STA575 fully integrated power module designed to implement a BASH® amplifier when used in conjunction with STABP01 digital processor. This power audio amplifier electronic project is based on the STA575 is capable to provide a maximum 100 watts output continuous power per channel ( on two channels ) on a 4 or 8 ohms load . The circuit contains all the blocks to build a stereo amplifier. Each single channel is based on the Output Bridge Power Amplifier, and its protection circuit.
STA575 power audio amplifier can be set in three states by the Stby/mute pin: Standby ( Vpin <0.8v), mute (1.6v 4V).
In the Standby mode all the circuits involved in the signal path are in off condition, instead in Mute mode the circuits are biased but the Speakers Outputs are forced to ground potential.
These voltages can be get by the external RC network connected to Stby/Mute pin.
The same block is used to force quickly the I.C. In standby mode or in mute mode when the I.C. dangerous condition has been detected.
The protection of STA575 power audio amplifier are implemented by the Over Temperature, Unbalance .
The Output bridge amplifier makes the single-ended to Differential conversion of the Audio signal using two power amplifiers, one in non-inverting configuration with gain equal to 2 and the other in inverting configuration with unity gain.
![STA575]()
![]( "STA575")
To protect the output transistors of the power bridge a power detector is implemented .
To power this 200 watt stereo power audio amplifier you’ll need a DC power source that will provide the following output voltages : Vs+ = 28V, Vs- = -23V, VCD+ = 20V, VCD- = -20V and you’ll need a 8 ohms load .
In the table bellow you can see values for electronic parts required by this 200 watt stereo power audio amplifier electronic project .
STA575 power audio amplifier can be set in three states by the Stby/mute pin: Standby ( Vpin <0.8v), mute (1.6v
In the Standby mode all the circuits involved in the signal path are in off condition, instead in Mute mode the circuits are biased but the Speakers Outputs are forced to ground potential.
These voltages can be get by the external RC network connected to Stby/Mute pin.
The same block is used to force quickly the I.C. In standby mode or in mute mode when the I.C. dangerous condition has been detected.
The protection of STA575 power audio amplifier are implemented by the Over Temperature, Unbalance .
The Output bridge amplifier makes the single-ended to Differential conversion of the Audio signal using two power amplifiers, one in non-inverting configuration with gain equal to 2 and the other in inverting configuration with unity gain.
To power this 200 watt stereo power audio amplifier you’ll need a DC power source that will provide the following output voltages : Vs+ = 28V, Vs- = -23V, VCD+ = 20V, VCD- = -20V and you’ll need a 8 ohms load .
In the table bellow you can see values for electronic parts required by this 200 watt stereo power audio amplifier electronic project .
Thursday, September 18, 2014
7 Watt Audio Amplifier Using TDA2003
Schematic diagram of a simple 7 watt audio amplifier using TDA2003 Amplifier IC. This is a good IC with many built in features like low harmonic distortion, short schema protection,thermal overload protection etc. This IC is a upgrade version of TDA 2002 amplifier IC.
7 Watt Audio Amplifier Circuit Diagram :
The schema is small and using only few components and it is able to deliver 7w output on 12V DC. Assamble the schema on PCB or veroboard and use heatsink with IC. Input voltage can be between 8 to 18 volt / 0.5A DC.
Car audio amplifier with IC TA7203P
Circuit Diagram
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| Car audio amplifier with IC TA7203P |
Circuit Description
Stereo car power amplfier with TA7203P , is suitable for the room your car , your car it will build an increasingly crowded and felt like using high-class amplifiers and speakers. Simply using this circuit and some speaker subwoofer speakers you can enjoy it.
Technical information :
- Max voltage = 20 Volt
- Min voltage = 8 Volt
- Max output = 2 x 40 Watt
- RL = 8 Ohm
Sunday, September 14, 2014
TA8210AH car audio amplifier circuit
IC TA8210AH By using this you can apply a series of audio power amplifier is the car audio system. In general, all the speakers in the car using a subwoofer speaker, and woofer. Because the car is not big room so the sound is being required is not too high.
Power amplifier compatible with TV audio
In this amplifier circuit using IC TDA8944J as the main amplifier with dual-channel audio amplifier with 2 x 7W output power at 8 Ω impedance. And a minimum supply voltage of 9-18 Volts. In this ic contains two Bridge Tied Load or BTL amplifier.
The circuit is often found in audio amplifier in a series of television, besides TDA2003, TDA2006 and so forth. PCB for a series of amplifiers using IC TDA8944J is very compatible with all other types of IC in IC TDA894X family unit , and below is a schematics.
Saturday, September 13, 2014
TDA7375 Audio Amplifier 2x35W
TDA7375 general description:
Circuit of quadruple audio amplifier using integrated circuit TDA7235 for systems surround. Circuit of quadruple amplifier for systems surround using the ci tda7375, for potency of 7 watts for channel in the version amplifying quad or 15 watts in the dual version (stereo). could arrive to 35 watts in the version.TDA7235 is a circuit integrated amplifier quadruple audio amplifier class AB capable to work in double bridge or simple quadruple amplifiers, circuit integrated with protection system of short, it requests the minimum of external components, available in multiwat 15H (TDA7375H) and multiwat 15V (TDA7375V). Although the first conception went to automotives pplications , to give him/it in a great variety of applications of low potency. That integrated circuit is ideal in the situation in that is wanted a reasonable potency and with a Power tension relatively low for your operation. That circuit drawn below it uses the basic configuration of quadruple amplifier, but using a configuration in bridge, it can be obtained about 4 times the maximum potency. In that configuration of quadruple amplifier it can be used as amplifier end of systems surround, when 7 watts for channel are already a good potency, using the minimum of components.Operation of the circuit of the audio amplifier with tda7375 The capacitor C8 uncouples the internal tension divisor. The capacitors C5 and C6 are the filter for Power supply. The capacitors of 2200µF / 25V are the exit capacitors. Vs is the Power supply that can be a car battery or a supply of 14 volts. Power supply for the circuit It can be with a transformer 12V/30VA, a rectifier bridge and a capacitor electrolytic of 4700µF or (larger). The maximum consumption of current with loads of 4Ohms is 2.1 A. You can use loads of 2 ohms, but he/she also remembers to increase the size of the of heat-sink, because the circuit integrated in Multiwat package it will heat up a little more. Suggestion of printed circuit board side of the copperSuggested PCB for mounting the amplifier tda7375, component side Information about mounting circuit audio amplifier. When assembling the circuit remember that this quad amplifier channels features two four inverted, then it should connect the speakers in reverse polarity at such times, attention to the polarity of electrolytic capacitors that should be of good quality. Before welding the tda7375 remember to solder the jumper, which will be underneath the integrated. TDA7375 Audio Amplifier 2x35W
TDA7375 features:
- HIGH OUTPUT POWER CAPABILITY:
– 2 x 35W/4 EIAJ
– 2 x 35W/4 EIAJ
– 2 x 25W/4 @14.4V, 1KHz, 10%
– 4 x 7W/4 @14.4V,1KHz, 10%
– 4 x 12W/2 @14.4V, 1KHz, 10%
- MINIMUM EXTERNAL COMPONENTS
– NO BOOTSTRAP CAPACITORS
– NO BOUCHEROT CELLS
– INTERNALLY FIXED GAIN (26dB BTL)
- ST-BY FUNCTION (CMOS COMPATIBLE)
- NO AUDIBLE POP DURING ST-BY OPERATIONS
- DIAGNOSTICS FACILITY FOR:
– OUT TO GND SHORT
– OUT TO VS SHORT
– SOFT SHORT AT TURN-ON
– THERMAL SHUTDOWN PROXIMITY
TDA7375 circuit diagram:
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| Double Bridge TDA7375 |
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| Quad SterioTDA7375 |
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| SterioBridge TDA7375 |
TDA7375 layout:
TDA8950 Audio Amplifier 2x150W
TDA8950 general description:
The TDA8950 is a high-efficiency Class D audio power amplifier. The typical output power is 2 × 150 W with a speaker load impedance of 4 Ω. The TDA8950 is available in both HSOP24 and DBS23P power packages. The amplifier operates over a wide supply voltage range from ±12.5 V to ±40 V and features low quiescent current consumption. TDA8950 Audio Amplifier 2x150W
TDA8950 features:
- Pin compatible with TDA8920B for both HSOP24 and DBS23P packages
- Symmetrical operating supply voltage range from ±12.5 V to ±40 V
- Stereo full differential inputs, can be used as stereo Single-Ended (SE) or mono
- Bridge-Tied Load (BTL) amplifier
- High output power in typical applications:
- SE 2 × 150 W, RL
- 4 Ω (VP = ±37 V)
- SE 2 × 170 W, RL
- 4 Ω (VP = ±39 V)
- SE 2 × 100 W, RL
- 6 Ω (VP = ±37 V)
- BTL 1 × 300 W, RL
- 8 Ω (VP = ±37 V)
- Low noise
- Smooth pop noise-free start-up and switch off
- Zero dead time switching
- Fixed frequency
- Internal or external clock
- High efficiency
- Low quiescent current
- Advanced protection strategy: voltage protection and output current limiting
- Thermal FoldBack (TFB)
- Fixed gain of 30 dB in SE and 36 dB in BTL applications
- Fully short-circuit proof across load
- BD modulation in BTL configuration
Amplifier diagram, circuit for TDA8950:
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| TDA8950 circuit diagram |
Datasheet for TDA8950: Download
Tuesday, September 9, 2014
BC550 Universal Audio Amplifier
A line amplifier is always a useful unit to have around, whether it is for matching a line signal or raising its level somewhat. This might be needed during a recording session or with a public-address system. Furthermore, a line mixer can be constructed from a number of these amplifiers. The input of the amplifier is high-voltage proof. The output impedance is low. The circuit is a conventional design: two dc-coupled stages of amplification are separated by a threefold Baxandall tone control system. The volume control at the input is conspicuous by having its `cold` side connected, not to ground, but to the output of the first amplifier. Because the signal there is out of phase with the input signal, the amplifier obtains negative feedback via PI. The amplification is therefore inversely proportional to the magnitude of the input signal. Thus, it is possible for the amplifier to accept a wide range of input levels. It is quite possible to input a signal taken directly from the loudspeaker terminals of a power amplifier. The supply voltage is 24 V. At that voltage, the amplifier draws a current of about 4 mA. If several amplifiers are used in conjunction (as, for instance, in a mixer panel), the various supplies (+ and + + in the diagram) can be interlinked. Capacitors C17 and C18, and resistor R7 don`t need to be duplicated in that case.
Tuesday, September 2, 2014
Mono audio amplifier 1 5W
- VCC MIN. V - 6
- VCC NOM. V - 12
- VCC MAX. V - 18
- P. OUT W - 1.5
- RL OHM - 15
Saturday, August 30, 2014
Simple Audio Meter Wiring diagram Schematic
This is an audio meter, a kind of decibel simpler, used to measure the sound directly in the schema or a sound output device. It is very simple, using only two transistors BC107, potentiometer VR2 adjusts the input level and the level of VR1 VU. This meter audio should only be used for bench testing and should not be used for calibration.
Simple Audio Meter Circuit Diagram
![Simple]()
Simple Audio Meter Circuit Diagram
Simple Audio Meter Circuit Diagram
Simple Audio Meter Circuit Diagram
Friday, August 29, 2014
Tuesday, August 26, 2014
LM3886 100W Power Audio Amplifier circuit
The following schema diagram is the 100 Watt power audio amplifier schema, build based on power amp chip LM3886. The single chip of IC LM3886 is able to amplify the audio power output up to 68W.
In this schema, the two of LM3886 are paralled to gain more powerful amplifier output. This amplifier can deliver about 50W into a 8-ohm speaker and 100W into a 4-ohm speaker. To make a stereo amplifier, there are should be use 4 pieces of LM3886.
Circuit source: http://www.shine7.com/audio/pa100.htm
Sunday, August 24, 2014
Simple Audio Booster
This is a simple and low-cost audio booster schema design. The schema is based on general purpose amplifier and switches, 2N3392 transistor packed in TO-92. This schema should be installed before power amplifier module.
To get the maximum audio performance, use metalfilm resistors, MKM and tantalum capacitors which have small tolerance of its value. Also, use stabilized and regulated 9V power supply for better result. You can simply use LM7809 IC regulator on 12V power supply to get stabilized 9V output. The 100K variable resistor is used to adjust the volume, you may remove this component and use main volume in your audio system.
Saturday, August 23, 2014
2006 Lincoln Audio Wiring Diagram
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| 2006 Lincoln Audio Wiring Diagram |
The part of 2006 Lincoln Audio Wiring Diagram: central junction block, hot in run, hot in start, speaker, module communication network, audio unit, electronic hidden antenna module, auxiliary junction box, antenna.
Thursday, August 21, 2014
20W Surround audio amplifier with SI 1020G
Below schematic audio amplifier with IC SI1020G
Part List
R1 = 100K
R2 = 1R
C1 = 2u2F
C2 = 100uF
C3 = 47uF
C3 = 47uF
C4 = 10uF
C5 = 2200uF
C6 = 47uF
C5 = 2200uF
C6 = 47uF
C7 = 100uF
Schematic Audio Amplifier with IC AN5260
This is a simple circuit schematic, you can string up this circuit easily. You just need IC AN5260 with some components such as , Condensator Electrolit , Resistor , Ceramic Condensator . Schematic require voltage 12 to 26 Volt . And i use current voltage of 12 volt. Its nice sound , smooth , and low noise amplifier. You want to try this schematic ? .
See this schematic below :
Datasheet IC 5260
Vcc = 12-26 V
Pout = 6,6 W
RL = 8 Ohm
Ft = 30hz - 18Khz
Icco = 60 mA
Package = SIP2-11
Manufactered = MATSUSHITA
Audio amplifier with IC AN7522 AN7523 and TDA2616
The series of amplifiers that are used on the television audio, amplifier used amplifier ICs, including the IC:
• AN7523• AN7522
• TDA2616
Third series of the function with the same system, namely BTL (Bridge Transformer Less). By using such configuration we get several advantages, namely no use coupling capacitors or coupling transformers.
Block diagram of circuit in the IC AN7522, AN7523 and TDA2616 as in the image below :
| Schematic AN7522 |
| AN7523 amplifier schematic |
| Schematic TDA2616 |
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