While designed for use with Clockworks SignalBlox products, this multi output supply can be used in any application needing bipolar supplies for analog circuitry and separate suppliesfor digital portions.
Like its smaller 3 output version, the seven output model offers a number of features to assist audio system builders:
- Post filters on the bipolar supplies to reduce noise for analog circuit use
- 12V input to allow use of external off-the-shelf certified supply modules
- Up to 10 msec of holdup on loss of primary power
- Primary power fail detection
- Remote bipolar supply on/off control
- Remote digital (3.3/5) on/off control
- Efficient 3.3V regulator fro standby output allows system to meet CE 0.5W standby when used with appropriate mains supply
The holdup and power fail detection allow a system design to ramp the output volume down on unexpected loss of power to reduce system click and pops.
12VDC input is either by center positive 2.1mm barrel connector or a screw block. The board includes a power switch that can be bypassed with a jumper if required.
Output is via 8 and 12 pin MTA-100 connectors that follow the standards specified in the SignalBlox System Configuration guide.
The Technotes page has a number of articles posted about the development of this supply and the noise generated by the bipolar supply. Actual op-amp test circuits were created and achieved output noise levels better than -120 dBv when using this supply.
Board only or kit
The board is available without any accessories for users that just need the supply board and will use their own cables and 12VDC input supply.
The -KIT version adds a universal input 60W supply, two MTA cables for the outputs, and a spare fuse just in case you make an oops hooking it up.
Output summary
- 3.3V standby (up to 1 amp)
- 3.3 and 5V 3 amps
- +/- 15V 300 mA
- +/-5V 1 amp
