Original TDA7293 / 94 BTL amplifier board 170W + 170W good test finished board
Amplifier section:Using four TDA7293 / 94 composed of dual-channel BTL circuit, dual 26V AC power supply, the load8 ohm, The maximum rated output power up to 170W + 170W,no distortion power 120W + 120W. The board uses the rings 1% metal film resistors, small electrolytic capacitors use Japanese Chemical (Ruby) capacitor
Power section:25A high current rectifier bridge.Two large filter capacitors as follows:British HIFI audio electrolytic gold fever capacitor 50V 10000uF 30X45.
Speaker Output section:Using 1237 delayed output, double relay closes about three seconds.
Blue glass plate using double-sided PCB, pads do HASL process, the board reasonable design, low noise, sound sweet, with a taste of bile, a hundred listening and tire.
Voltage: Recommended supply voltage: three-wire AC dual 22V ~ 28V (full 400 watts or more power ring cattle),For example:
- 26V-0-26V,(Referred to as dual 26V)
Transformer output isTwo linesOrFour linesIt is not possible.
Power: Max 170W + 170W, 120W + 120W power without distortion
Impedance: 4-16 Europe
PCB Size: 170x80X50mm
Weight: 250g (within the error 5g).
The connection without a radiator, radiator if needed, plus $26.86,FreeDrill a good fit size M3 screw hole (with M3 screw) radiator size: 170 * 45 * 70 (H) MM
Need to buy a radiator, please click on the following link:
The connection will need to purchase the appropriate Toroidal transformers, please click on the following link:
Independent products, homegrown, adequate supply, all the pictures are taken in kind, piracy reserved!