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參數(shù)資料
| 型號： | WD-1 |
| 英文描述： | MULTI-FUNCTION WATCHDOG CARD |
| 中文描述： | 多功能看門狗卡 |
| 文件頁數(shù)： | 7/49頁 |
| 文件大?。?/td> | 569K |
| 代理商： | WD-1 |
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Introduction
Blue Chip Technology Ltd.
01271013.doc
INTRODUCTION
The WD-1 card provides PC users with a way of ensuring the integrity of their
machine in critical applications.
The card is set to port 300 Hex. Providing you do not have any other cards set
to this address you can immediately run the TSR software (see Section 5). If
you have other cards set to 300 Hex you must read section 2.1.
Some features of the card, however, such as using the watchdog or reading the
temperature, require a more detailed understanding of the card and the relevant
sections in this document should be read carefully.
The card’s features are briefly discussed below and are highlighted in Figure 1.
1.
All 4 supply rails are continually monitored via IC1. This chip
detects undervoltage (+Ve rails) and overvoltage (-Ve rails) and
generates a fail signal if either of these conditions occurs.
2.
A fan fail detection circuit is provided which requires the use of a
replacement fan. The fan generates a string of pulses whose frequency
is proportional to the speed of the fan. These pulses feed into a
monostable circuit which generates a fail signal if the frequency of the
pulses falls below a preset value.
3.
The temperature detection circuit performs two tasks. Firstly an LM35
temperature IC generates a voltage proportional to temperature. This
voltage is compared to a pre-set voltage using IC2 and generates a fail
signal if the temperature has exceeded 37
°
C. Secondly, this voltage is
amplified and converted to a digital form via the ADC (IC4). This
converts this signal into a temperature value which can be displayed to
the PC monitor.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| WD10 | 制造商:WEITRON 制造商全稱:Weitron Technology 功能描述:Surface Mount Glass Passivated Bridge Rectifiers |
| WD100 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DC/DC Converters |
| WD1000 | 功能描述:烙鐵 85W DIGITAL SOLDER STATION RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included |
| WD1000CHTZ | 制造商:Western Digital Corp 功能描述:2.5 SATA 1000 - Bulk |
| WD1000DHTZ | 制造商:Western Digital Corp 功能描述:3.5 SATA 1000 - Bulk |
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