User Manual

STTRS DOCUMENTATION
Document Number 80-330501HBKM – Issue A - Draft Page 50 of 500
5.4.2.11. Dual Diode Assembly (94-100004)
The purpose of these dual diode assemblies is to allow two DC voltage sources to be combined, so
that the main DC rail within the equipment can be sourced from either a mains driven PSU, or
externally through an XLR connector or from dual mains driven PSUs . They are very heavy-duty
diodes and they prevent any reverse current from flowing back to their source or the alternative
supply rail. Combining diodes such as these will also be used if the equipment is to be powered from
external back-up batteries.
5.4.2.12. DC/DC Converter 96-200047
96-200047 is an O.E.M. high power device with a wide input range and 12.5 amp @ 12V (150Watts)
output capability used to derive a 12V fixed voltage power supply rail from a higher voltage supply, in
this case 12V. In the event of failure this unit should not be repaired, only replaced.
PARAMETER SPECIFICATION
DC Input Voltage range 19 to 36V
DC Output voltage 12V ± 1%
Max. current load 12.5Amps
Operation -10°C to +60°C Temperature
range
Storage -20°C to +85°C
Working Humidity 20 to 90% RHNC
5.4.2.13. 12V Switch-Mode PSU (96-300052)
No routine maintenance of the PSU is required. If a fault is suspected, then the output voltage from
the power supply may be measured on its output terminals. This is typically set to 12.2V. The
adjustment potentiometer will be found close to the DC output terminals.
All the PSUs used in AFL Cell Enhancers are capable of operation from either 110 or 220V nominal
AC supplies. The line voltage is sensed automatically, so no adjustment or link setting is needed by
the operator.
96-300052 Specification
AC Input Supply
110 or 220V nominal
Voltage
85 - 265V AC
(absolute limits)
Frequency 47 to 63Hz
DC Output Supply
12V DC (nominal)
Voltage
10.5-13.8V (absolute limits)
Current 12.5A