AmplifierCircuits

The main features of this powerful MULTIWATT Package (a trademark of SGS-THOMSON Microelectronics), a power amplifier IC chips designed specifically for car radio application, are the high current capability (3. 5A) and the capability to drive a very low impedance (down to 1. 6R). Here is the schematic diagram of the standard circuit as shown in it visit page.  via next.gr 20 Watts Car Stereo Amplifier

Amplifiers which run from 12V DC generally don`t put out much power and they are usually not hifi as well. But this little stereo amplifier ticks the power and low distortion boxes. With a 14. 4V supply, it will deliver 20 watts per channel into 4-ohm loads at clipping while harmonic distortion at lower power levels is typically less than 0. 03%.  visit page.  via next.gr High-Performance 12V 20W Stereo Amplifier

This is a 7 tube 20 watt amplifier that must be used in conjunction with a pre amplifier having volume an tone controls. For this, I recommend this 6 tube pre-amp. With this amplifier you may use 6BQ5 output tubes. A 5U4-G rectifier is used so that the power supply will have plenty of pep to run the amp. This amplifier is basically a Magnovox amp visit page. 7 tube 20 watt amplifier

Description: The NTE7011 is an integrated circuit in a 12−Lead SIP type package designed for use as a BTL power  amplifier with built−in headphone amp for portable stereo applications. Typical applications include  portable component stereos, car stereo, radio cassette recorders, and TV sound multiplex output. Features:  Low Quiescent Current, Low Distortion, Low Noise, High Output Power  Wide Supply Voltage range: VCC = 6 to 26V  Built−In Muting Circuit  Built−In Protection Circuits: Temperature, Surge, Overcurrent  Built−In Headphone Amplifier Circuit

Circuit diagram: 20W Audio Power Amplifier Datasheet for HA1397: Download

20 watt BTL Audio Power Amplifier

General Description: The TDA8928J is a switching power stage for a high  efficiency class-D audio power amplifier system.  With this power stage a compact 2 × 10 W self oscillating  digital amplifier system can be built, operating with high  efficiency and very low dissipation. No heatsink is required. The system operates over a wide supply voltage  range from ±7.5 V up to ±30 V and consumes a very low  quiescent current. Circuit Diagram: Power stage 2 x 10 or 1 x 20 W class-D audio amplifier Datasheet for TDA8928:   Download

General Description: The TDA8931 is a switching power stage for high efficiency class-D audio power amplifier  systems.  It contains a Single-Ended (SE) power stage, drive logic, protection control logic, a full  differential input comparator and a HVP charger to charge the SE capacitor. With this  amplifier a compact 1 × 20 W closed loop self-oscillating digital amplifier system can be  built. The TDA8931 has a high efficiency so that a heat sink is not required up to  20 W (RMS). The system operates on an asymmetrical and a symmetrical supply voltage. Circuit Diagram: Circuit Diagram for TDA8931 Power comparator 1 × 20 W Datasheet for TDA8931:   Download

20 Watt BTL Audio Amplifier

Circuit Diagram: Dual BTL 20W Audio Power Amplifier

UPC1230H2 Circuit diagram

20 W Audio Power Amplifier uPC1188H

General description The TDA8931 is a switching power stage for high efficiency class-D audio power amplifier  systems.  It contains a Single-Ended (SE) power stage, drive logic, protection control logic, a full  differential input comparator and a HVP charger to charge the SE capacitor. With this  amplifier a compact 1 × 20 W closed loop self-oscillating digital amplifier system can be  built. The TDA8931 has a high efficiency so that a heat sink is not required up to  20 W (RMS). The system operates on an asymmetrical and a symmetrical supply voltage. Features High efficiency Operating voltage asymmetrical from 12 V to 35 V Operating voltage symmetrical from ±6 V to ±17.5 V Thermally protected No heat sink required Charger for single-ended capacitor No pop sound Applications Flat panel television sets Flat panel monitors Multimedia systems Wireless speakers Micro systems Circuit Diagram 20W power amplifier TDA893...

Circut Diagram: Circuit diagram for 20W Hi-Fi AUDIO POWER AMPLIFIER

20W TDA2020 Amplifier Circuit Diagram

General Description The TDA1520A is a monolithic integrated hifi audio power amplifier designed for asymmetrical or symmetrical powert supplies for mains-fed apparatus. Circuit Diagram: 20W Hi-Fi Audio Amplifier

General Description for LM2005: The LM2005 is a dual high power amplifier, designed to deliver optimum performance and reliability for automotive deliver optimum performance and reliability for automotive vice to deliver 10W/channel into 2X (LM2005T-S), or 20W bridged monaural (LM2005T-M) into 4X, with low distortion.  Features for LM2005: Wide supply range (8V –18V) Externally programmable gain With or without bootstrap Low distortion Low noise High peak current capability POe20W bridge High voltage protection AC and DC output short circuit protection to ground or across load Thermal protection Inductive load protection Accidental open ground protection Immunity to 40V power supply transients 3§C/W device dissipation Pin for pin compatible with TDA2005 Circuit diagram for LM2005: LM2005 20 Watt Automotive Power Amplifier Datasheet for LM2005: Download