Hi friends, In the new project, again TDA7294 audio, price performance and a proven amplifier integration … This project consists of a combination of the ” Delayed and Loud Speaker DC Protection Circuit ” and ” TDA7294 Stereo 2X100 Amplifier Circuit ” projects that I previously shared in addition to the tone control layer ( there are minor differences when you take detai .. )
There are rectifier bridge diodes, filter capacitors, loudspeaker pr0otection circuitry, and tone control circuit for audio, bass, media, treble adjustment required for feeding on the circuit. The circuit designed as an additional card is the fuse, filter card which will be connected to the output of the feeding traf.
High current lines ( speaker outputs, + v -v supply lines ) must be coated with solder.
Transformer to be used; 2X18V AC for 4-ohm speaker, 2X24V AC for 8-ohm speaker, 250W at home for financial …
TDA7294 STEREO AMPLIFIER CIRCUIT SCHEMATIC
The speaker protection circuit is working with 12v. I did the working voltage by regulating it through the main supply traction without using additional source, but since the single layer PCB is scribed, you need to make this AC connection with cable. The situation is clear in the connection diagram below. Actually, I can make it but many amateurs can not make the circuit at home is very troublesome …
In addition, the supply voltage of the opample tone control layer is taken from the circuit with the resistance and chopper regulation. 1K 1W resistor for 2X18V AC transformer and 150ohm 2W, 2X24V AC transformer 1K5 1W for RES resistor and 300Ω 2W resistor for RES can be used. The RES resistor is located behind the 7812 regulator