Watchdog Power Supply
A Watchdog Power Supply, also called "non-stop" power, detects when a program stops and cycles power to re-start the program. When the program is running normally it outputs a periodic pulse which keeps the Watchdog Power Supply from re-booting the system. If this pulse is absent for more than some set time, the Watchdog Power Supply cycles power. This is the same as when a desktop PC "hangs" and almost always shutting off and on power brings the system back. The PSWD-PC104 is a wide-input (9 – 15 VDC) 10/15-watt isolated PC/104-size DC/DC converter with watchdog functionality. The card automatically reboots the system when the watchdog pulse is absent for a programmable period of time (20s). An external line to reboot other devices is also available. This watchdog-power supply card will work with any 5-volt system capable of generating a periodic CMOS pulse. This card is part of NetDAS and is why the system rarely fails.
Applications and Highlights
- Automatically recovers from program crashes
- External reset line for other systems
- Power supply upgrade for NetDAS data loggers
- Up to 3000 mA isolated output at 5VDC
- PC/104 bus compatible (option)
- Wide 9 - 15 volt input range
- Fuse protected
- LED Watchdog pulse and power-good LED indicators
- Up to 85% efficiency
- 10 and 15 watt models