Friday, October 2, 2009
Amplifier power is a circuit of electronics that is used to strengthen the power (or energy in general). In the field of audio, amplifier will amplify the sound signal (which has been expressed in the form of electric current) on the input it into electric current is stronger at the output. The amount of strengthening is often known by the term gain. Value of the gain is expressed as a function of frequency is called the transfer function.
So the gain is the result of the power output (Pout) and power at the input to its function in the form of frequency. The size of the gain, (G) is usually the Decibel (dB).
So the gain is the result of the power output (Pout) and power at the input to its function in the form of frequency. The size of the gain, (G) is usually the Decibel (dB).
68 Watt Audio Amplifier LM3886
LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4 load and 38W into 8 with 0.1% THD+N from 20Hz-20kHz.
The performance of the LM3886, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.
The LM3886 maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low noise floor of 2.0µV. It exhibits extremely low THD+N values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.
The performance of the LM3886, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.
The LM3886 maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low noise floor of 2.0µV. It exhibits extremely low THD+N values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.
Layout IC Power LM3886Notice:
- 68W cont. avg. output power into 4 at VCC = ±28V
- 38W cont. avg. output power into 8 at VCC = ±28V
- 50W cont. avg. output power into 8 at VCC = ±35V
- 135W instantaneous peak output power capability
- Signal-to-Noise Ratio >= 92dB
- An input mute function
- Output protection from a short to ground or to the supplies via internal current limiting circuitry
- Output over-voltage protection against transients from inductive loads
- Supply under-voltage protection, not allowing internal biasing to occur when |VEE| + |VCC| <= 12V, thus eliminating turn-on and turn-off transients
- 11-lead TO-220 package
- Wide supply range 20V - 94V.
mini audio amplifier using IC LM 386.This amplifier is much suitable for small game amplifying applications .The circuit has few components and works of a 12 Volt power supply.You can increase the supply voltage up to 18V for a bit more power, with out changing the components.But I would say 12V is OK. A 4 Ohm speaker can be used as load.Volume can be controlled by connecting a 10k pot at the audio input to the IC.
Skema rangkaian audio amplifier using IC LM 386
Component List:
C1 1 10uf Electrolytic Capacitor
C2 1 470uf Electrolytic Capacitor
C3 1 0.1uF Disc Capacitor
C4 1 2000uf Electrolytic Capacitor 2200uF
R1 1 2.2 Ohm Resistance (Anything Within 10% tolerance)
R3 1 220 Ohm Resistance (Anything Within 10% tolerance)
IC1 1 LM383 IC
IC LM386 Description
The LM386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200.
The inputs are ground referenced while the output automatically biases to one-half the supply voltage. The quiescent power drain is only 24 milliwatts when operating from a 6 volt supply, making the LM386 ideal for battery operation.
The inputs are ground referenced while the output automatically biases to one-half the supply voltage. The quiescent power drain is only 24 milliwatts when operating from a 6 volt supply, making the LM386 ideal for battery operation.
IC LM386 Features
• Minimum external parts
• Wide supply voltage range: 4V-12V or 5V-18V
• Low quiescent current drain: 4mA
• Voltage gains from 20 to 200
• Ground referenced input
• Self-centering output quiescent voltage
• Low distortion: 0.2% (AV = 20, VS = 6V, RL = 8Ohm, PO = 125mW, f = 1kHz)
• Available in 8 pin MSOP package.
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Thursday, October 1, 2009
This Rangkaian audio Ampilifier is designed to be packed into a mini-speaker box 2, 4 and 8 ohms. This circuit is also equipped with a switch-Bass Booster. can be connected to the output line walkman, mini disc, iPod, CD Player, Computer and other similar devices is its headphone output line.
This circuit of the design without using the IC by using methods that seem somewhat out of date. ampilfier the supply voltage 12v. SW1 switch will produce bass-booster, but at the same time the volume should be increased to compensate for lost power at high frequency.
This circuit of the design without using the IC by using methods that seem somewhat out of date. ampilfier the supply voltage 12v. SW1 switch will produce bass-booster, but at the same time the volume should be increased to compensate for lost power at high frequency.
Skema rangkaian audio amplifier sederhana
in use later, R9 should be set carefully in order to reduce distortions in the sound that emerged. and of course have to make 2 pieces in the circuit to generate a stereo output from this circuit.list Component Of Audio Amplifier:
-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
-SPKR: 3-5 Watt Loudspeaker, 8, 4 or 2 Ohm impedance
Thursday, September 24, 2009
This is a scheme set 1000watt power amplifier. Currently I do not have a picture to the circuit board, but because the amplifier circuit is quite simple, you can design it yourself PCB easily. Or you can order it at the store PCB audio kit in the center of electronic singosaren oriental, solo.
the assemble cables for DC power supply and output transistors must be large, use size 1.5-3mm for large current passed. The supply used transformer with 20A/45Ct and at least 4x10000uf/80 volt capasitor. this circuit is able to supply power 10000watt therefore the power transistor will be very hot, give good cooling fan on the power transisitor
Skema rangkaian Power amplifier 1000 wattTransitor alternative to replacement of the 2SA1494 is 2SA1216 From SANKEN. The transistor has a 200-350 watt power dissipation of each pair so that for long-term operation of more durable. Keep in mind, usually sold a pair of power transistors with its complement, so you can not buy 2SC2922 alone without 2SA1216 or 2SA1494 without 2SC3858. The price range for transitor tsb is 30-40 thousand Rupiah / pair.
Wednesday, September 23, 2009
By using IC LM 1875 made by National Semiconductor, we can make a simple Power Amplifer, but it produces a reliable voice.
This power amplifier circuit can result in strengthening the voltage up to 27dB for each channel. Strengthening the voltage can be changed by changing the feedback resistor R5 (in this circuit uses R 22K). But the tension reinforcement shall not be less than 20 dB because it can cause oscillation.
This power amplifier circuit can result in strengthening the voltage up to 27dB for each channel. Strengthening the voltage can be changed by changing the feedback resistor R5 (in this circuit uses R 22K). But the tension reinforcement shall not be less than 20 dB because it can cause oscillation.
Skema rangkaian 20 watt power amplifier
IC LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications.
IC LM1875 delivers 20 watts into a 4 Ohm or 8 Ohm load on ±25V supplies. Using an 8 Ohm load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown.
IC LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.
IC LM1875 delivers 20 watts into a 4 Ohm or 8 Ohm load on ±25V supplies. Using an 8 Ohm load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown.
IC LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.
Pin configuration of the LM 1785 can be seen in the image below:
As for the circuit's power supply it can you see in the image below:
Monday, September 14, 2009
Amplifier power is a circuit of electronics that is used to strengthen the power (or energy in general). In the field of audio, amplifier will amplify the sound signal (which has been expressed in the form of electric current) on the input it into electric current is stronger at the output. The amount of strengthening is often known by the term gain. Value of the gain is expressed as a function of frequency is called the transfer function.
So the gain is the result of the power output (Pout) and power at the input to its function in the form of frequency. The size of the gain, (G) is usually the Decibel (dB).
So the gain is the result of the power output (Pout) and power at the input to its function in the form of frequency. The size of the gain, (G) is usually the Decibel (dB).
Skema Rangkaian Power Amplifier 200 watt
Equivalent Circuit of IC STK4050 II
Features IC STK4050II
Compact package for thin-type audio sets
Member of pin-compatible series with outputs of 20 to 200W
Easy heatsink design to disperse heat generated in thintype
stereo sets
Constant-current circuit to reduce supply switch-on and
switch-off shock noise
External supply switch-on and switch-off shock noise
muting, load short-circuit protection, thermal shutdown
and other circuits can be tailored-designed
Application Circuit Power Amplifier IC STK4050 II
Note:
To use the results of the max capacitor 10000Uf/80 Vot, with a pure tranformator 5 / 42 volt
provide a good cooling plate, the ic STK4050 II
Sunday, September 13, 2009
This is the circuit of a 12 watt Stereo HiFi amplifier circuit using IC TDA 2616. A quiet simple and robust circuit using very less components. This makes the circuit ideal for a portable power amplifier. The circuit delivers 12 W power on 8 Ohm speaker for each channel at +/- 12 V dual supply.
Rangkaian Amplifier Hifi 12 watt Stereo
For asymmetrical power supplies (with the load short-circuited), the maximum unloaded supply voltage is limited to VP = 28 V and with an internal supply resistance of RS ³ 4 W, the maximum unloaded supply voltage is limited to 32 V (with the load short-circuited). For symmetrical power supplies the circuit is short-circuit-proof up to VP = ±21 V.
The TDA2616 is a stereo power amplifier IC comes in a 9-lead single-in-line (SIL9) plastic power package (SOT131). This IC is specially designed for mains fed amplifier circuits, such as stereo radio,tape and television .The IC has good gain balance of both channels and Hi-fi in accordance with IEC 268 and DIN 45500 standards.Also the IC TDA 2616 has special inbuilt circuit for the suppression of noise signals at the inputs, during switch-on and switch-off.This prevents click sounds during power on and power off.
IC TDA 2616 Pin assignment & layout.
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