Below is a 80W amplifier circuit is constructed by using a power IC TDA7295. With a very simple design, makes this circuit very easy to build. TDA7295 has many features to support your audio system, the most important is that the IC has very low distortion and very low noise feature.
Schematic diagram:
PCB Layout:
Here is a Hi-Fi power amplifier circuit, built with a power IC TDA2050. This circuit will produce a power output up to 32watt. With good sound quality, high power and very low distortion feature, this circuit will be very suitable for simple and cheap audio systems.
TDA2050 Amplifier Schematic diagram:
TDA2050 Amplifier PCB Design:
This is a class AB audio power amplifier circuit which built using a TDA2002 or TDA2003 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.
Component parts:
| R1____________ potentiometer 10 k ohm R2____________ 220 ohm R3____________ 2R2 ohm R4____________ 1 ohm IC1___________ TDA2002/3 amplifier module 1 Heat sink | C1_____________ 10uF/50V electrolytic capacitor C2_____________ 470uF/16V electrolytic capacitor C3_____________ 2200uF 25V electrolytic capacitor 1 C4_____________ 100 nF mylar 1 C5_____________ 100 nF monoblock 1 C6_____________ 100uF 25V ecap 1 |
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