Wednesday, November 24, 2010
This is a 5 Watt stereo audio amplifier circuit, built based on single amplifier TA7227 chip. The TA7227 can be used for dual mode (stereo) and single mode (bridge/mono). This IC type featured some circuit protection: thermal protection, over voltage protection, current limitter and BTL DC short connection.
Rangkaian TA7227 Stereo Audio AmplifierIC TA7227 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 5A current at 12 V at full volume.So the power supply must be any thing more than 5A. Up to 15 V can be used ,which gives a bit more power boost.Commonly used is 12 V.
Here is a 35 Watt audio amplifier circuit based LM391 chip. The LM391 Audio Power Driver is designed to drive external Power Transistors in 10 to 100 watt power Amplifier designs. High power supply voltage operation and true high fidelity performance distinguish this IC. The LM391 is internally pro- tected for output faults and thermal overloads; circuitry pro- viding output Transistor protection is user programmable. By National Semiconductor
Rangkaian 35 Watt Power AmplifierBased on LM391
The circuit was designed to drive the power transistors of a power amplifier that will produce a power output of 35 Watts. Inductor L1 is constituted by 20 coils of wire, with thickness 0.9mm, round resistor R16. Transistors Q3-4 should be placed on heatsink. If are used the Q3-4 in packing TIPxxxx they can be placed straight above in PCB. If however they are used transistor in packing TO-3, then it will be supposed they are connected with short cables in the corresponding places on PCB.
List componet of 35 Watts amplifier LM391 circuit
- R1-3-5-8-10 = 1Kohm
- R2-7-11 = 100Kohm
- R4-6 = 4.7Kohm
- R9-12 = 100ohm
- R13 = 47Kohm
- R14-15 = 0.15ohm 5W
- R16 = 1ohm 2W carbon 5%
- R17 = 10ohm 1W carbon 5%
- C1 = 2.2uF 63V
- C2 = 4.7uF 25V
- C3-17 = 47uF 63V
- C4-8-9 = 1nF 100V MKT
- C5 = 47nF 100V MKT
- C6 = 22pF ceramic
- C7-11-12-13 = 100nF 100V MKT
- C10 = 22pF ceramic
- TR1 = 10K Trimmer
- D1-2 = IN4002
- IC1 = LM391
- Q1 = BD139
- Q2 = BD140
- Q3 = TIP2955
- Q4 = TIP3055
- L1 = See text
This is a circuit schematic for the mini power amplifer using TDA1015T, based on the application circuit from the datasheet. Not many external components are needed to complete at full 0.5W power amplifier. This is without its pre-amp but not many more components are required to add that to the circuit.
Rangkaian Mini Amplifier TDA1015TA volume control is included in schematic. Log type is required and 4k7 to 10k is about right. A dual pot is needed if you plan on using two TDA1015's to complete a stereo amp.
Chances are you'll want this amplifier portable. Batteries do the trick fine, but you won't get much power out of a couple of 1.5V cells. Unfortunately the size of a decent amount of battery power will mean that the overall size of this amp will be much bigger and for that there are more benefits to be had using a device like the TDA7052 or TDA2822 for stereo.
Chances are you'll want this amplifier portable. Batteries do the trick fine, but you won't get much power out of a couple of 1.5V cells. Unfortunately the size of a decent amount of battery power will mean that the overall size of this amp will be much bigger and for that there are more benefits to be had using a device like the TDA7052 or TDA2822 for stereo.
Quick ref data of TDA1015T Chip
- Supply voltage range: 3,6 to 12 V
- Peak output current: 1 A
- Output power: 0,5 W
- Voltage gain power amplifier: 29 dB
- Voltage gain preamplifier: 23 dB
- Total quiescent current: 22 mA
- Operating ambient temperature range: -25 to +150 °C
- Storage temperature range: -55 to + 150 °C
This is a small amplifier using TDA2822 chip designed for portable cassette players and radios. Including volume control. A 9 volt power supply is ideal for supply, which can be a source with batteries or transformer. It is not necessary to use heat sink.
Rangkaian TDA2822 Mini Portable AmplifierGeneral integrated amplifier circuit external components and need more larger heatsink. This paper presents a simple amplifier circuit, made easy. TDA2822 amplifier integrated circuits used in music players, portable DVD and other audio playback; power is not great but you can satisfy the requirements of the hearing, and the circuit is simple, good sound quality, wide voltage range of characteristics such as the amateur production Small amp better choice.
Feature of TDA2822 Amplifier Circuit
- Power Supply: 3 – 12 V at 200 – 500 mA max
- Idle Current: ~ 10 mA
- Output impedance 4 - 32 Ohm
- Freq. response ~ 40 Hz to 200 kHz, 8 ohm, G=10<> 50 kHz, 32 ohm
- Output Power:
- > 1 Watt max. 4-8 ohms, 12V DC
- > 500 mW, 32 ohm, 12V
- > 500 mW, 4 ohm, 6V
- ~ 0.4 Watt RMS cont. per channel
Schematic diagram of the class-H BTL amplifier TDA1562Q is shown below, in this circuit. Has an internal booster circuit elements That allow to develop at 4 Ohm load with 14.2 volts power supply, the power to 70 Watts
Rangkaian TDA1562Q - 70 Watts BTL AmplifierThe TDA1562Q contains a mono BTL class-H power amplifier output. At low output power, up to 18 W, the device operates as a normal BTL amplifier. When a larger output voltage swing is required, the internal supply voltage is lifted by means of the external electrolytic capacitors. Due to this momentarily higher supply voltage of the obtainable output power is 70 W.
Besides shortcircuit protection and thermal protection (Almost 145 degree), this output impedance amplifiers offer a protection, if the impedance it is low Than 0.5 ohms the circuit is deactivated.
Feature of TDA1562Q BTL Amplifier
Besides shortcircuit protection and thermal protection (Almost 145 degree), this output impedance amplifiers offer a protection, if the impedance it is low Than 0.5 ohms the circuit is deactivated.
Feature of TDA1562Q BTL Amplifier
- Output power:----------------------36W RMS into 4R
- Music power:-----------------------70W into 4R
- Frequency response:---------------1dB down at 28Hz and 55kHz
- Input sensitivity:-------------------130mV RMS (for 36W into 4?)
- Harmonic distortion:----------------typically 0.2% (see graphs)
- Signal-to-noise ratio:----------------95dB unweighted (22Hz to 22kHz)
Saturday, November 13, 2010
This present here is a 20Watts mono and 10Watt Car Stereo Amplifier circuit using IC TDA2004.
Rangkaian TDA 2004 BTL|Stereo AmplifierThe TDA2004 is a class B dual audio power amplifier in MULTIWATT [package Designed specifically for car radio applications. TDA2004 has low noise, low distortion, and robust. The robustness is supported by its operation safety protection features: very inductive loads, load dump voltage surge, overheating, the output AC-ground short, fortuitous open ground. Other Important Things is space and cost saving: very low external components counts, and very simple mounting system with no need for electrical isolation Between the package and the heat sink Because the heat contact metal of the package is already connected to ground.
TDA2004A Pinning
This is a power amplifier circuit which built using a TDA2002 power amplifier IC module. These are replacements for the original LM383 which is no longer available. It is easy to build and has a minimum of external components. The module has both short circuit protection and thermal protection. It can drive loads as low as 1.6 ohm and is capable of delivering over 10 watts from a 16 V supply.
Rangkaian Amplifier TDA2002The small amplifier is constructed around the TDA2002 IC, capable of delivering 4Wrms at 4ohms. The supply voltage may be anywhere between 8 and 18V, and the IC will accept transient voltage peaks of up to 28V without damage. 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.
List Component
R1 : potentiometer 10 k ohm
R2 : 220 ohm 1/4 watt resistor
R3 : 2R2 ohm 1/4 watt resistor
R4 : 1 ohm 1/4 watt resistor
IC1 : TDA2002 amplifier module 1, Heat sink
C1 : 10uF/50V electrolytic capacitor
C2 : 470uF/16V electrolytic capacitor
C3 : 2200uF/25V electrolytic capacitor
C4 : 100 nF mylar 1
C5 : 100 nF monoblock 1
C6 : 100uF ecap 1
Friday, November 12, 2010
This following is a simple stereo amplifier circuit, with minimal external components. It use only one opamp. TDA1516Q, that is capable to give output power 2 x 5Watt in the 4 ohms, with 0.5% distortion. The capacitor C5, it Should in pins placed near the IC TDA1516Q.
The amplifier circuit can be used to drive small personal computer speakers. They are widely used in automotive sound systems, portable consumer products, digital players, telephony, and automotive head units. In some commercial equipment, they can also be found in in-dash DVD player, digital class and active subwoofers power amplifiers for cars and Hi-Fi applications.
The amplifier circuit can be used to drive small personal computer speakers. They are widely used in automotive sound systems, portable consumer products, digital players, telephony, and automotive head units. In some commercial equipment, they can also be found in in-dash DVD player, digital class and active subwoofers power amplifiers for cars and Hi-Fi applications.
Rangkaian TDA1516Q Stereo AmplifierThe TDA1516 an integrated class B output amplifier enclosed in a 13-lead single in-line plastic power package primarily designed for car radio applications due to its features such as flexible leads, identical inputs, load dump protection, good ripple rejection, low thermal resistance, mute/standby switch, reverse polarity safe, fixed gain, thermally protected, high output power, capability to handle high energy on outputs, flexibility in use, no switch-on/switch-off plop, low offset voltage at output, and requires very few external components
List Component
C1-C2 : 220nF Ceramic Capacitors
C3 : 100uF/25V Electrolytic Capacitors
C5 : 2200uF/25V Electrolytic Capacitors
C6-C7 : 71000uF/40V Electrolytic Capacitors
F1 : 2A Fuse
D1 : 1N5408
IC1 : TDA1516Q
M1-M2 : Loudspeaker 10w/4ohm
While doing research for Designing an Opamp headphone amplifier circuits portable, I built a portable headphone amplifier for testing purposes. EACH channel uses a single Burr-Brown Op-Amp NE5534 in a inverting configuration. It has adequate current capability to drive most headphones without an output stage. I have Used it with Sennheiser 465s and achieved ear-splitting volume. The amplifier is ideal as a booster for power-conserving stereo sources Such as portable CD players and for interfacing with passive EQ networks Such as tone controls or a headphone acoustic simulator.
The schematic for one channel of the amplifier is shown in figure below
Rangkaian 9 Volt Headphone Amplifier NE5534P1 : 22K Dual gang Log Potentiometer
R1,R5 : 18K 1/4W Resistors
R2,R3,R4,R6: 68K 1/4W Resistors
C1,C2,C6 : 4µ7/25V Electrolytic Capacitors
C3,C7 : 22pF Ceramic Capacitors
C4,C5,C8 : 220µF/25V Electrolytic Capacitors
IC1 : NE5532 Dual Op-amp
J1 : 3.5mm Stereo Jack Socket
SW1 : SPST Slide or toggle switch
B1 : 9 Volt PP3 battery
NE5532 Pinning
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