Power Supply Accessories
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AC Termination |
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FEATURES |
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Power supply on a PC/104 card |
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Clean, filtered power for PC/104 systems |
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25 Watts output power |
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+5V, -5V, +12V, -12V outputs available |
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Load dump and transient protection |
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Accepts power supply accessories |
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Technical manual included |
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AC termination provides increased noise immunity for mobile PC/104 applications. Vehicle environments are notoriously noisy. EMI, voltage spikes, and other noise sources can interfere with proper bus operation and corrupt data transfers. The AC termination board shown here plugs onto the end of the PC/104 stack to quiet the bus signals and increase system integrity more effectively than simple resistive termination. It can be used with any PC/104 system, with or without a PC/104 power supply module.
When ordering the V104 or HE104 power supply modules, order option-TAC, and the bus termination components will be mounted right on the circuit board module without taking up additional height on the PC/104 stack.
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Battery Charger |
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FEATURES |
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Automatic battery switchover for UPS operation |
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Universal battery charging (with PMC-104) |
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Plugs into V104/HE104 power supply modules |
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Occupies zero space (mounts inside V104/HE104 power supply) |
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Extended temperature operation |
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Short circuit protected |
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The BC-104 provides a compact and effective method for charging a battery and creating an uninterruptible power supply (UPS) for PC/104 embedded applications.
It contains a constant-current charger (max 1.0A) capable of charging battery packs up to 20VDC. The constant current level is set with a 0-1V input signal, either from an external source or from the PMC-104 power management controller above. With the addition of the PMC-104, any desired charging algorithm can be implemented to charge any type of rechargeable battery. Charging voltage, charging current, and battery temperature can all be monitored for safe, optimal battery charging.
The BC-104 mounts onto the V104 or HE104 underneath the heatsink just next to the PC/104 bus connectors. In this location it occupies zero additional space and maintains PC/104 card height specifications. The battery to be charged connects to a screw-terminal block on the power supply. Automatic battery switchover occurs whenever the main power supply voltage falls below the battery voltage, thus protecting the operation of your mobile embedded system from sudden drops in system power.
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Power Management Controller |
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FEATURES |
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Saves power in mobile or battery-operated installations |
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Field programmable in PBASIC |
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Installs onto V104/HE104 power supply |
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Ultra-compact |
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Extended temperature operation |
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Sample programs included |
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The PMC-104 consists of a Basic Stamp ultra-miniature microcomputer and software for controlling the V104 and HE104 power supplies.
It plugs into the power supply circuit board and allows you to save power by controlling the duty cycle of the power supply: turn it on at programmed intervals, take measurements or perform other operations for a short period of time, and then put the system to sleep again. This intelligent operation allows you to save power by a factor of 100, 1000, or even more over continuously operating systems, depending on the time it takes to run your program and the time between wakeups.
The PMC-104 Basic Stamp consists of a 14-pin SIP module with a complete microcontroller circuit, including CPU, 4MHz resonator, and low-power voltage regulator. It includes an embedded BASIC language interpreter called PBASIC. Programs can be downloaded to the device through the PC's serial port. Supplied software includes example programs to control the turn-on and turn-off of the power supply at user-selected intervals, as well as programs to control the BC104 battery charger option.
Instruction Set
The PBASIC software embedded into the PMC-104 includes the following instructions:
| BRANCH |
GOTO |
LET |
REVERSE |
| BUTTON |
HIGH/LOW |
LOOKUP/LOOKDOWN |
SERIN/SEROUT |
| FOR/NEXT |
IF/THEN |
PULSIN/PULSOUT |
TOGGLE |
| GOSUB/RETURN |
INPUT/OUTPUT |
RANDOM |
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Power Supply Accessories |
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Copyright© Diamond Systems Corporation 2001-2008. All rights reserved.
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