Subscribe by email

TDA7850 audio amplifier electronic circuit

This 50 watt audio amplifier circuit electronic project is designed using the TDA7850 integrated circuit which is a very simple class AB power amplifier designed in MOSFET technology which use just few external components.
The 50 watt audio amplifier circuit must be powered usually from a 14.4 volts power supply.
The TDA7850's inputs are ground-compatible and can stand very high input signals (±8Vpk) without any performance degradation.

TDA7850 audio amplifier can be used in car radio audio systems and it have many features like :
High output power capability:
– 4 x 50 W/4 Ω max.
– 4 x 30 W/4 Ω @ 14.4 V, 1 kHz, 10 %
– 4 x 80 W/2 Ω max.
– 4 x 55 W/2 Ω @ 14.4V, 1 kHz, 10 %
MOSFET output power stage , Hi-Fi class distortion , Low output noise , ST-BY function , Mute function , automute at minim supply voltage detection , Output short circuit to gnd, to Vs protection , Overrating chip temperature with soft thermal limiter , Output DC offset detection .

Standby and Muting facilities are both CMOS compatible. In true CMOS ports or microprocessors are absent the ST-BY pin can be connected direct to Vs but it’s necessary to connect a 470kΩ resistance between these two pins (Vs and ST-BY) .

This audio power amplifier IC must be mounted on a corresponding heatsink for high temperature dissipation .

TDA7850 audio amplifier electronic circuit project

Electronic Circuits: 


Hi i have created two 5ohm and 50 watt speakers i have attached now two more with them will your amp circuit work with those speakers and is it a good and clean audio amplifier for turning it to stereo.