Showing posts with label 22W. Show all posts
Showing posts with label 22W. Show all posts

1/28/2018

22 Watt Car Subwoofer Amplifier

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Circuit Description

     The stereo signals coming from the line outputs of the car radio amplifier are mixed at the input and, after the Level Control, the signal enters the buffer IC1A and can be phase reversed by means of SW1. This control can be useful to allow the subwoofer to be in phase with the loudspeakers of the existing car radio. Then, a 12dB/octave variable frequency Low Pass filter built around IC1B, Q1 and related components follows, allowing to adjust precisely the low pass frequency from 70 to 150Hz. Q2, R17 and C9 form a simple dc voltage stabilizer for the input and filter circuitry, useful to avoid positive rail interaction from the power amplifier to low level sections.
     This unit is intended to be connected to an existing car stereo amplifier, adding the often required extra "punch" to the music by driving a subwoofer. As very low frequencies are omnidirectional, a single amplifier is necessary to drive this dedicated loudspeaker. The power amplifier used is a good and cheap BTL (Bridge Tied Load) 13 pin IC made by Philips (now NXP Semiconductors) requiring a very low parts count and capable of delivering about 22W into a 4 Ohm load at the standard car battery voltage of 14.4V.

Circuit Diagram



Parts list:

  • P1_____________10K Log Potentiometer
  • P2_____________22K Dual gang Linear Potentiometer
  • R1,R4___________1K 1/4W Resistors
  • R2,R3,R5,R6____10K 1/4W Resistors
  • R7,R8_________100K 1/4W Resistors
  • R9,R10,R13_____47K 1/4W Resistors
  • R11,R12________15K 1/4W Resistors
  • R14,R15,R17____47K 1/4W Resistors
  • R16_____________6K8 1/4W Resistor
  • R18_____________1K5 1/4W Resistor
  • C1,C2,C3,C6_____4µ7 25V Electrolytic Capacitors
  • C4,C5__________68nF 63V Polyester Capacitors
  • C7_____________33nF 63V Polyester Capacitor
  • C8,C9_________220µF 25V Electrolytic Capacitors
  • C10___________470nF 63V Polyester Capacitor
  • C11___________100nF 63V Polyester Capacitor
  • C12__________2200µF 25V Electrolytic Capacitor
  • D1______________LED any color and type
  • Q1,Q2_________BC547 45V 100mA NPN Transistors
  • IC1___________TL072 Dual BIFET Op-Amp
  • IC2_________TDA1516BQ 24W BTL Car Radio Power Amplifier IC
  • SW1____________DPDT toggle or slide Switch
  • SW2____________SPST toggle or slide Switch capable of withstanding a current of at least 3A
  • J1,J2__________RCA audio input sockets
  • SPKR___________4 Ohm Woofer or two 8 Ohm Woofers wired in parallel

Technical data:

  • Output power (1KHz sinewave): 22W RMS into 4 Ohms at 14.4V supply
  • Sensitivity: 250mV input for full output
  • Frequency response: 20Hz to 70Hz -3dB with the cursor of P2 fully rotated towards R12, 20Hz to 150Hz -3dB with the cursor of P2 fully rotated towards R11
  • Total harmonic distortion: 17W RMS: 0.5% 22W RMS: 10%

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12/02/2014

22 Watt Stereo Amplifier circuit diagram.

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22 Watt Stereo Amplifier circuit diagram. This circuit can be used for audio home amplifier and car audio amplifiers. It is extremely simple design, inexpensive and very easy to build. Even a newbie hobbyst will easy assemble this circuit. The scheme given here is a car stereo amplifier circuit can be used in That car or other vehicle. The circuit is based TDA1553, which is aClass-Baudioamplifier. As you can see this circuitisverysimple, consisting onlyof theICand thecapacitor6. Here is a circuit diagram of car stereo. This 20w car audio amplifier circuit described hereoffers a20 wattboosterthatwillallow youtorealize thepower amplifierwith which one canincrease the poweroutputfromthe carstereoup to20Wattsmaximum. The inputINis connected to theoutputof thereceiver, Uoutputis connectedto the speakeras shownoncaraudioamplifierscheme. via next.gr


22 Watt Stereo Amplifier circuit diagram.
22 Watt Stereo Amplifier circuit diagram.

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10/16/2014

22 W audio amplifier

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22 W audio amplifier
Datasheet for ha13128: Download
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9/15/2014

22 W bridge/stereo audio amplifier with clipping detector

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Features:
  • Very few external components
  • No Boucherot cells
  • No bootstrap capacitors
  • High output power
  • No switch on/off noise
  • Very low standby current
  • Fixed gain (20 dB stereo)
  • Programmable turn-on delay
  • Clipping detector
  • Protections:
  • Output AC-DC short circuit to ground and to supply voltage
  • Very inductive loads
  • Loudspeaker protection
  • Overrating chip temperature
  • Load dump voltage
  • Fortuitous open ground
  • ESD

Description:

The TDA7360 is a new technology class AB Audio Power Amplifier in the Multiwatt® package designed for car radio applications. Thanks to the fully complementary PNP/NPN  output configuration the high power performance  of the TDA7360 is obtained without bootstrap  capacitors.
A delayed turn-on mute circuit eliminates audible  on/off noise, and a novel short circuit protection system prevents spurious intervention with highly  inductive loads. The device provides a circuit for the detection of  clipping in the output stages. The output, an open  collector, is able to drive systems with automatic  volume control.

Circuit Diagram:
22 W bridge/stereo audio amplifier with clipping detector

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8/06/2014

22W BRIDGE / STEREO AUDIO AMPLIFIER WITH CLIPPING DETECTOR TDA7360

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General Description:

TDA7360 is a new technology class AB Audio Power Amplifier in the Multiwatt package
designed for car radio applications.

Circuit Diagram
TDA7360 bridge

TDA7360 stereo

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22W BRIDGE-STEREO AMPLIFIER FOR CAR RADIO TDA7350

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Features
  • VERY FEW EXTERNAL COMPONENTS
  • NO BOUCHEROT CELLS
  • NO BOOSTRAP CAPACITORS
  • HIGH OUTPUT POWER
  • NO SWITCH ON/OFF NOISE
  • VERY LOW STAND-BY CURRENT
  • FIXED GAIN (30dB STEREO)
  • PROGRAMMABLE TURN-ON DELAY
  • Protections:
  • OUTPUT AC-DC SHORT CIRCUIT TO
  • GROUND AND TO SUPPLY VOLTAGE
  • VERY INDUCTIVE LOADS
  • LOUDSPEAKER PROTECTION
  • OVERRATING CHIP TEMPERATURE
  • LOAD DUMP VOLTAGE
  • FORTUITOUS OPEN GROUND
Circuit Diagram
22W BRIDGE-STEREO AMPLIFIER FOR CAR RADIO TDA7350

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