My Circuit

LA4440 is a dual channel audio amplifier IC. It can be used in two modes; one is Stereo amplifier and another Bridge amplifier mode. The LA4440 is a monolithic linear IC from Sanyo. Here I give the both circuit mode of amplifier using IC LA4440. When the IC LA4440 is Stereo mode in the circuit, its output power is 6w+6w. In stereo mode use two pieces speaker of 2Ωto8Ω. C10 is filter capacitor used to reduce the ripple of supply voltage. Don’t decrease the value of capacitor C6&C7 less than 100uF, 10v, it may causes of the output at low frequencies goes lower. The pin-6 of LA4440 amplifier circuit  is audio input pin; it used in stereo amplifier mode but in bridge mode it is grounded. C8&C9 are polyester film capacitor used to preventing oscillation, and R1&R2 used for the same reason as filter resistor. Though the maximum supply voltage for both circuit of amplifier is 18V but we recommend to use a 12V,3A power supply. Use a good quality heat sink with LA4440. I think...

 The circuit above is based on IC TEA2024, package IC is SIP2-10 and manufactered by THOMSON. Circuit above can be applied anywhere as long as the speaker must be required , do not use powered speakers, it will make this circuit of hot , especially on the IC. So the use of powered speakers with the power output of this circuit. Technical Information : Minimum voltage : 6 Volts DC Maximum voltage: 18Volts DC Power Output       : 2 x 7 Watts Impedance           : 4 Ohms Currents               : 35 mA

Here I will explain about the necessary voltage and power amplifier output. The voltage should have at least approximately 9Volt 30Volt voltage and maximum voltage on the DC current. For maximum output of 2 X 2Watt with impedance 8-16 ohm. Because this amplifier circuit using ic and ic is used have the equation, so that if used different ic, then the required output voltage and also differ depending ic respectively. Part List : Resistor R1 = 1M R2 = 1M R3 = 1K R4 = 1K R5 = 100K R6 = 100K R7 = 1R R8 = 1R Capacitor C1 = 1uF C2 = 220uF C3 = 1uF C4 = 100uF C5 = 5uF C6 = 5uF C7 = 0.1uF C8 = 220uF C9 = 220uF C10 = 0.1uF IC U1 = ULN2274B , ULN2277 , ULN2278B

Stereo Power Amplifier is 2x70Watt STA550 chip audio power with BASH concept that can be connected with digital device. 2x70Watt STA550 Stereo Power Amplifier is an amplifier with BTL system with symmetrical power supply with ground. Power amplifier STA550 uses power output transistor which is on the chip and is set to produce a high efficiency audio power. Power output on the STA550 is using the system without copling ac bridge (direct) and zero offset. Strengthening of the STA550 from stereo power amplifier is +12 dB. 2x70Watt STA550 Stereo Power Amplifier is equipped with temperature sensors for protection from overheating and current-limiting protection system for power amplifier. 2x70Watt STA550 Stereo Power Amplifier is equipped with standby and mute controls to regulate silent or active mode power amplifier. Feature Stereo Power Amplifier 2x70Watt STA550 : Monochip Bridge Stereo Amplifier dengan Bash® Architecture 55+55w Output Power @ Rl = 4/8 W, Thd = 0.5% 70+70w Output Power ...

Using a mobile phone while driving is dangerous. It is also against the law. However, you can use your mobile phone as a powerful music player with the help of a stereo power amplifier. This does away with the need of a sophisticated in-dash car music system. Most mobile phones have a music player that offers a number of features including preset/manual sound equalisers. They have standard 3.5mm stereo sockets that allow music to be played through standard stereo headphones/sound amplifiers. Nokia 2700 classic is an example.  Mobile Car Stereo Player Circuit Diagram   A car audio amplifier with 3.5mm socket can be designed and simply connected to the mobile phone output via a shielded cable with suitable connectors/jacks (readymade 3.5mm male-to-male connector cable is a good alternative). Fig. 1 shows the circuit of car stereo player. It is built around popular single-chip audio power amplifier TDA1554Q (IC1). The TDA1554Q is an integrated class-B power amplifier in a 17-lea...

The test beeper generates a sinusoidal signal with a frequency of 1,000 Hz, a common test  frequency for audio amplifiers.  It consists of a classical Wien- Bridge oscillator (also known as  a Wien-Robinson oscillator). The network that determines the  frequency consists here of a series connection of a resistor and  capacitor (R1/C1) and a parallel connection (R2/C2), where  the values of the resistors and  capacitors  are  equal  to  each  other. This network behaves, at  the oscillator frequency (1 kHz  in this case), as two pure resistors. The opamp (IC1) ensures  that the attenuation of the net- work  (3  times)  is  compensated  for.  In  principle  a  gain  of  3 times should have been sufficient to sustain the oscillation,  but  that  is  in  theory.  Because  of tolerances in the values, the  amplification needs to be (automatically) adjusted.   Circuit diagram: Test Beeper For Your Stereo circuit Diagram   Instead of an intelligent amplitude  controller  we  chose  for...

  *note : Stereo Amplifier I've tried this Circuit Amplifier  and was resulting in very satisfactory . The sound that issued a very nice and smooth. It's just that there is little noise, but the noise will go away when a loud sound. And strange , sound effects can out by itself  and by simply adding tone control. Minimum supply voltage is 5 volt , and maximum supply voltage is 18 volt . Maximum power output  2 X 10 watt with minimum impedance 4 Ohm. See this schematic Circuit below : This is schematic circuit and i design in simple circuit. Click to view Enlarge

VU Level Meters STEREO

Here is the 22 watt stereo audio power amplifier circuit diagram based on TDA1554 and integrated circuit from NXP semiconductors (formerly PHILIPS semiconductors). It is very simple and useful circuit for amplify the stereo signals .The circuit dissipates roughly 28 watts of heat, so a good heatsink is necessary. The chip should run cool enough to touch with the proper heatsink installed .the circuit operates at 12 Volts at about 5 Amps at full volume. Lower volumes use less current, and therefore produce less heat. R1 is also a 5% resistor. Circuit diagram: 22W Stereo Audio Amplifier Circuit Diagram

Modern audio frequency amplifiers provide flat frequency response over the whole audio range from 16 Hz to 20 kHz. To get faithful reproduction of sound we need depth of sound, which is provided by bass (low notes). Hence low-frequency notes should be amplified more than the high frequency notes (treble). To cater to the individual taste, and also to offset the effect of noise present with the signal, provision of bass and treble controls is made. The combined control is referred to as tone control. The circuit for bass and treble control shown in the figure is quite simple and cost-effective. This circuit is designed to be adopted for any stereo system.  Here, the power supply is 12-volt DC, which may be tapped from the power supply of stereo system itself. For the sake of clarity, the figure here shows only one channel (the circuit for the other channel being identical). The input for the circuit is taken from the output of preamplifier stage for the left as well as right channel of ...

GENERAL DESCRIPTION: The device is designed as an active stereo-tone/volume  control for car radios, TV receivers and mains-fed  equipment. It includes functions for bass and treble  control, volume control with built-in contour (can be  switched off) and balance. All these functions can be  controlled by DC voltages or by single linear  potentiometers. Features: Few external components necessary Low noise due to internal gain Bass emphasis can be increased by a double-pole  low-pass filter Wide power supply voltage range. Circuit Diagram: Stereo-tone/volume control circuit TDA1526 Datasheet for TDA1526:  Download

It has explode rainbow light voguish the front panel and very beautiful by night. Light & set Aluminum alloy pencil case on behalf of distribution of roast without doubt RCA Input , can be real used such as Ipod,MP3/MP4 headset amplifier Mini size calm to installation by DIY, especially talented fit for car, motor bike and other audio DIY device. P.M.P.O,: 2 x 180W, R.M.S.: 2 x 20W Input power: 12V 6A DC, (power supply included) Input sensitivity: 200mv Speaker impedance : 4 - 8ohm To Buy Amplifier with Amazon click this link : Lepai TRIPATH TA2020 Class T Mini Amp Hi-Fi Stereo Audio Amplifier

Stereo Amplifier with Tube Stereo amplifier is very simple, consisting of 5 active components including the power supply it. Series Stereo Amplifier With Tube was prepared with 5 units trioda tube consisting of 1 unit tubes 5Y3 GT vacuum rectifier, 2 tube tube trioda 6SF5 GT high-mu tube 6k6 and 2 units which form the power beam amplifiers. Power consumption for the circuit with a tube stereo amplifier is not more than 45 Watt. Current consumption for the circuit with a tube stereo amplifier is around 3A. A complete range of stereo amplifiers with this tube can be seen from the following series of images. Stereo Amplifier With Tube Sign Component Stereo Amplifier With Tube R1, R10, R13 2.2M R2 470K 1/2W 1 Meg 1/2W R3 R4 220K 1/2W R5 330 Ohm 2W R6 220K 1/2W R7 2.2Meg 1/2W R8 1Meg 1/2W R9 720 Ohm 20W R11 33K 1/2W R12 22K 1/2W C1, C9 400V 0.005uF C2 0.05uF 600V C3 20uF 25V C4 0.01uF 400V C5 200uuF 400V C6, C7 15uF 450V C8 15uF 400V T1 117V Primary, Secondary 350VCT, 2 × 6.3V T2 7600 Ohm P...