WhitakerAudio 60 W Stereo Power Amplifier, Руководство пользователя и по сборке

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device. For resistors in the 2–5 W range, 1/2-inch should be sufficient. For higher-power
devices, more clearance should be provided.
• Use only the amount of heat and solder necessary to do the job. Once a PWB is damaged
by excessive heat it is very difficult to repair. Excessive solder flux on the board will tend
to attract dust, which—at high voltages—can lead to arc-over problems.
• Inspect each solder connection to be certain that the mounting pad or via has been filled.
• Mount large components last. These typically include barrier strips and high-voltage
electrolytic capacitors.
All audio cables of length greater than about 6 inches should use shielded cable. Generally
speaking, the shield should be connected to ground at the load end. Grounding both ends of a
shielded cable to the same ground plane is not recommended as it may lead to circulating currents
that will adversely impact the noise floor.
Efficiently making the socket connections to the PWB requires a bit of practice. The
recommended procedure is detailed in Section 5. Be certain to wear protective eye glasses during
this process, and at other steps in PWB assembly.
Be certain to use hookup wire rated for 600 V dc or above for the rectifier circuit. Common
hookup wire is typically rated for 300 V dc, which is inadequate for the power supply rectifier and
filters.