TDA7293 tda7294 kênh đôi với loa bảo vệ PCB trống Hội Đồng Quản Trị

TDA7293 TDA7294 Dual Channel with Speaker Protection PCB Empty Board

Power amplifier board size: 140*80*60mm

Power supply voltage: Recommended power supply voltage: three lines AC dual 22V~28V (full 200 watts or more power ring cow), such as: 26V-0-26V (referred to as dual 26V)

The transformer output is not possible with two wires and four lines.

Output power: 85W*2 (undistorted power), peak power 100*2

Horn impedance: 4-8 ohms

1: Volume adjustment is as follows: high single, low single, total single amount (potentiometer spacing 25mm)

2: All resistors are 1% accurate metal film resistors (except 5W inductive resistors)

3: The coupling resistor is a special audio film capacitor of 2.2uF/250V, with beautiful sound quality and low single purity.

4: Horn protection for original imported Omron silver contact double pole relay

5: Two new original imported TDA7293 or TDA7294 power amplifier IC

6: The op amp part adopts large S5532, the effect is better than the general 5532, and the gold-plated IC base produced by Taiwan is easy to replace the op amp.

7: The power supply part is made of 25A flat bridge. The two large filter capacitors are: British NOVER Novartis HIFI Audio Electrolytic Gold Fever Capacitor 50V 10000uF 30*45mm

8: The hole distance between the two large tubes is 50mm, and the diameter of the large electrolytic capacitor is 30mm

Warning: This power amplifier board is not equipped with a heat sink, it is strictly forbidden to work without installing a heat sink to power on: if the heat sink is not installed to work on power, the chip will burn out immediately because of the heat!