TDA7294 85W Mono Audio Power Amplifier Board support BTL Fit for TDA7293 for Sale

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TDA7294 85W Mono Audio Power Amplifier Board support BTL Fit for TDA7293 For Sale

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TDA7294 85W Mono Audio Power Amplifier Board support BTL Fit for TDA7293:
$7.27

performance
Power Supply: AC dual 15V to 35V (AC rectifier filter required) or ± 18V dc to 45V. Recommended Dual 35V (note not double 35V transformer, is plus or minus 35V DC, recommended dual 26V / 200W or more toroidal transformer, the rectified DC voltage of about double 35V). Reminder: the battery can not be used!Transformer power: dual-channel power supply transformer not less than 300W. Mono power supply transformer not less than 100W. Power rectifier: dual-channel a total of not less than 40,000 uF, rectifier bridge preferably 25A or more.
Output power: maximum output power of 85W.
Load: to promote domestic large floor speakers.
Board dimensions: length 50mm width 35mm height 25mm.Weight: 30g (5g internal error).Radiator: According to the supply voltage, power supply high heat, the output power is also large.
Plate: FR-4 double-sided fiberglass board, two security copper, blue ink, double-sided spray tin.
Audible Noise: None.
Midpoint voltage: less than =================TDA7294 easy Fireworks (burn IC) in the case of N:
★ positive and negative power supply voltage asymmetry, if voltage transformer rectifier out of + 35V and -30V, fireworks!
★ no discharge capacitor End? Slough Chen C energized, fireworks! (DIY welding especially when attention to this point)
★ power work when touch input, fireworks!
★ chip and heat sink thermal conductivity to be good, such as the heat sink grounding will have well insulated, because IC housing is attached to negative pressure, or the fireworks!
★ welding element errors (such as capacitors anti-polarity welding) may be fireworks, a wrong output short circuit, will be fireworksOutline
● The official standard circuit design, allowing you to hear the most authentic voice of Yin;
● a 2 ounce copper double-sided fiberglass panels ensure super stable line of work;
● Single-channel plus small size design, making installation easier.
Can facilitate the realization of the existing subwoofer amplifier or an upgrade or repair, can be used for outdoor speaker enlarge
The composition also can be arbitrary two-channel or multichannel new amplifier;
● perfect support BTL bridging, once put into a variety of play,
Enjoy fully enjoy DIY fun! ! !
● This board 7293/7294 can be used;
● sound subjective evaluation:
Small and medium revealed a domineering exquisite inherent in classical and modern!
Whether listening to voices or instruments, classical or pop,
Performance is very good, strong and powerful bass, the music rich,
Mellow, sweet voice, layering rich, high-frequency thin,
Mellow sounds wonderful! Sibilance singer, ventilation slightest sound could be heard