For small DIY set-ups with up to eight modules and a maximum of 380 mA supply
current the A-100SSB s s b ( mall upply/ us board) is intended. A-100SSB is the
combination of a small power supply (+12V/max. 380mA, -12V/max. 380mA) and a
bus board with 8 connectors for A-100 modules.
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AA For the operation and installation of the A-100SSB basic electronic
knowledge and mechanical skills are required. If this does not apply we
strictly advice from installing and running the A-100SSB. In this case
please return the A-100SSB to the dealer where you purchased it for
refund. You have to understand all the information that is included in this
document.
The power supply provides the voltages +12V and – 12V required to run the A-100
modules. In addition +5V are available which are required for some older A-100
modules and modules from other manufacturers.
The maximum current load is 380 mA for +12V, 380 mA for -12V, and 50 mA for
+5 V. If +5V is used the current is taken from the +12V source. In this case the
currents for +12V and +5V have to be added and the sum has to be not more than
380mA.
The A-100SSB bus provides connections for up to eight A-100 modules or modules
from other manufacturers which are 100% compatible. The busboard also carries the
internal signals CV and GATE which may be used if required. This depends upon the
installed modules and if they use the interal CV and/or Gate lines (e.g. Midi/USB
interfaces, VCOs, ADSRs).
The pc board includes a switching power supply module that converts the incoming
mains voltage (110 – 240V AC) into the low voltages (+12VDC, -12VDC) required to
run the A-100 modules.
Important safety notes
A-100SSB is equipped with an IEC socket to establish the connection to mains by
using a suitable cable. During operation dangerous voltages are present at the
bottom of the pc board ! For this reason a metal cover is located at the bottom of the
pc board which prevents the touching of the dangerous parts of the circuit.