Power-686

Power-686The Power 686 is a power supply intended for use with the Modulus 686 power amplifier and similar high power amplifiers. This power supply provides twice the capacitance of the smaller Power 86 and uses individual diodes, each with its own heat sink, rather than a single integrated diode bridge. Thus, the Power 686 is well suited for a stereo Modulus 686 and also a good candidate for multi channel Modulus 86 builds. Technical Documentation Design

The Power-686 is a power supply intended for use with the Modulus-686 power amplifier and similar high-power amplifiers. This power supply provides twice the capacitance of the smaller Power-86 and uses individual diodes, each with its own heat sink, rather than a single integrated diode bridge. Thus, the Power-686 is well suited for a stereo Modulus-686 and also a good candidate for multi-channel Modulus-86 builds.

Technical Documentation

Design Documentation

• Features

• The key features of the Power-686 are:

  • Optimized PCB layout with copper planes and pours to minimize parasitics.
  • Simple capacitor snubber to minimize diode switching noise. Option for CRC snubber for advanced builders.
  • Four discrete diodes with individual heat sinks.
  • Four 22000 µF, 50 V reservoir capacitors. Snap-in capacitors up to 40 mm in specified diameter supported.
  • Power on indicator LED output.
  • JST connectors for connecting Modulus-286 and other amplifiers.
  • Detailed documentation describing how to identify the various windings on an Antek AN/AS-series power transformer and connect the transformer correctly.
  • Bill-of-materials available as a link to a project set up with Mouser Electronics for ease of parts ordering.
  • 3.3″ × 5.7″ (84 × 145 mm) footprint. The assembled board measures approximately 57 mm in height.
  • Gold plated PCB, made in Canada.

  Build budget: The cost of the parts is a bit over $80. The Kit contains all parts necessary to populate the circuit board. In addition to these parts you will need a dab of thermal grease such as Arctic Silver commonly available at computer parts stores.