Power over Ethernet (PoE) is a new development thatallows for the delivery of power to Ethernet-based devicesvia standard Ethernet CAT5 cable, precluding the need forwall adapters or other external power sources. The PoEspecification defines a hardware detection protocol wherePower Sourcing Equipment (PSE) is able to identify PoEPowered Devices (PDs), thus allowing full backwardscompatibility with non-PoE-aware (legacy) Ethernetdevices.
DC/DC 升壓IC：The FP6291 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.25 Ω
power MOSFET make this regulator highly power efficient. The internal compensation network also
minimizes as much as 6 external component counts. The non-inverting input of error amplifier connects
to a 0.6V precision reference voltage and internal soft-start function can reduce the inrush current.
The FP6291 is available in the SOT23-6L package and provides space-saving PCB for the application fields.
A frequent requirement in systems involves drivinganalog signals into non-linear or reactive loads. Cables,transformers, actuators, motors and sample-hold circuitsare examples where the ability to drive diffi cult loads isrequired. Although several power buffer amplifi ers areavailable, none have been optimized for driving diffi cultloads.
This application report discusses the design of non-invasive optical plethysmographyalso called as pulsoximeter using the MSP430FG437 Microcontroller (MCU). Thepulsoximeter consists of a peripheral probe combined with the MCU displaying theoxygen saturation and pulse rate on a LCD glass. The same sensor is used for bothheart-rate detection and pulsoximetering in this application. The probe is placed on aperipheral point of the body such as a finger tip, ear lobe or the nose. The probeincludes two light emitting diodes (LEDs), one in the visible red spectrum (660nm) andthe other in the infrared spectrum (940nm). The percentage of oxygen in the body isworked by measuring the intensity from each frequency of light after it transmitsthrough the body and then calculating the ratio between these two intensities.
The STWD100 watchdog timer circuits are self-contained devices which prevent systemfailures that are caused by certain types of hardware errors (non-responding peripherals,bus contention, etc.) or software errors (bad code jump, code stuck in loop, etc.).The STWD100 watchdog timer has an input, WDI, and an output, WDO (see Figure 2). Theinput is used to clear the internal watchdog timer periodically within the specified timeoutperiod, twd (see Section 3: Watchdog timing). While the system is operating correctly, itperiodically toggles the watchdog input, WDI. If the system fails, the watchdog timer is notreset, a system alert is generated and the watchdog output, WDO, is asserted (seeSection 3: Watchdog timing).The STWD100 circuit also has an enable pin, EN (see Figure 2), which can enable ordisable the watchdog functionality. The EN pin is connected to the internal pull-downresistor. The device is enabled if the EN pin is left floating.
SRAM-based FPGAs are non-volatile devices. Upon powerup, They are required to be programmed from an external source. This procedure allows anyone to easily monitor the bit-stream, and clone the device. The problem then becomes how can you effectively protect your intellectual property from others in an architecture where the part is externally programmed?
特點(diǎn) 最高輸入頻率 10KHz 顯示范圍0-9999（一段設(shè)定）0至999999累積量 計(jì)數(shù)速度 50/10000脈波/秒可選擇 輸入脈波具有預(yù)設(shè)刻度功能 累積量同步（批量）或非同步（批次）計(jì)數(shù)可選擇 數(shù)位化指撥設(shè)定操作簡(jiǎn)易 計(jì)數(shù)暫時(shí)停止功能 1組報(bào)警功能 2:主要規(guī)格 脈波輸入型式: Jump-pin selectable current sourcing(NPN) or current sinking (PNP) 脈波觸發(fā)電位: HI bias (CMOS) (VIH=7.5V, VIL=5.5V) LO bias (TTL) (VIH=3.7V, VIL=2.0V) 最高輸入頻率: <10KHz (up,down,up/down mode) 輸出動(dòng)作時(shí)間 : 0.1 to 99.9 second adjustable 輸出復(fù)歸方式: Manual(N) or automatic (R or C) can be modif 繼電器容量: AC 250V-5A, DC 30V-7A 顯示值范圍: 0-9999（PV,SV） 0-999999(TV) 顯示幕: Red high efficiency LEDs high 7.0mm (.276")(PV,SV) Red high efficiency LEDs high 9.2mm (.36")(TV) 參數(shù)設(shè)定方式: Touch switches 感應(yīng)器電源: 12VDC +/-3%(<60mA) 記憶方式: Non-volatile E2PROM memory 絕緣耐壓能力: 2KVac/1 min. (input/output/power) 1600Vdc (input/output) 使用環(huán)境條件: 0-50℃(20 to 90% RH non-condensed) 存放環(huán)境條件: 0-70℃(20 to 90% RH non-condensed) CE認(rèn)證: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
特點(diǎn) 顯示值范圍-199999至999999位數(shù) 最高輸入頻率 5KHz 90度相位差加減算具有提高解析度4倍功能 輸入脈波具有預(yù)設(shè)刻度功能 定位基準(zhǔn)值可任意設(shè)定 比較磁滯值可任意設(shè)定 數(shù)位化指撥設(shè)定操作簡(jiǎn)易 3組繼電器輸出功能 2:主要規(guī)格 脈波輸入型式: Jump-pin selectable current sourcing(NPN) or current sinking (PNP) 脈波觸發(fā)電位: HI bias (CMOS) (VIH=7.5V, VIL=5.5V) LO bias (TTL) (VIH=3.7V, VIL=2.0V) 最高輸入頻率: <5KHz 定位置范圍: -199999 to 999999 second adjustabl 比較磁滯范圍: 0 to 9999 adjustable 繼電器容量: AC 250V-5A, DC 30V-7A 顯示值范圍: -199999 to 999999 顯示幕: Red high efficiency LEDs high 9.2mm (.36") 參數(shù)設(shè)定方式: Touch switches 感應(yīng)器電源: 12VDC +/-3%(<60mA) 記憶方式: Non-volatile E2PROM memory 絕緣耐壓能力: 2KVac/1 min. (input/output/power) 1600Vdc (input/output) 使用環(huán)境條件: 0-50℃(20 to 90% RH non-condensed) 存放環(huán)境條件: 0-70℃(20 to 90% RH non-condensed) CE認(rèn)證: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
特點(diǎn) 精確度0.25%滿刻度 ±1位數(shù) 輸入配線系統(tǒng)可任意選擇 CT比可任意設(shè)定 具有異常電流值與異常次數(shù)記錄保留功能 電流過(guò)高或過(guò)低檢測(cè)可任意設(shè)定 報(bào)警繼電器復(fù)歸方式可任意設(shè)定 尺寸小,穩(wěn)定性高 2.主要規(guī)格 輔助電源: AC110V&220V ±20%(50 or 60Hz) AC220V&440V ±20%(50 or 60Hz)(optional) 精確度: 0.25% F.S. ±1 digit 輸入負(fù)載: <0.2VA (Current) 最大過(guò)載能力 : Current related input: 2 x rated continuous 10 x rated 30 sec. 25 x rated 3sec. 50 x rated 1 sec. 輸入電流范圍: AC0-5A (10-1000Hz) CT ratio : 1-2000 adjustable 啟動(dòng)延遲動(dòng)作時(shí)間: 0-99.9 second adjustable 繼電器延遲動(dòng)作時(shí)間: 0-99.9 second adjustable 繼電器復(fù)歸方式: Manual (N) / latch(L) can be modified 繼電器磁滯范圍: 0-999 digit adjustable 繼電器動(dòng)作方向: HI /LO/GO/HL can be modified 繼電器容量: AC 250V-5A, DC 30V-7A 過(guò)載顯示: "doFL" 溫度系數(shù): 50ppm/℃ (0-50℃) 顯示幕: Red high efficiency LEDs high 14.22mm(.56")(PV) Red high efficiency LEDs high 14.22mm(.276")(NO) 參數(shù)設(shè)定方式: Touch switches 記憶型式 : Non-volatile E2PROM memory 絕緣耐壓能力: 2KVac/1 min. (input/output/power) 1600Vdc(input/output 使用環(huán)境條件 : 0-50℃(20 to 90% RH non-condensed) 存放環(huán)境條件: 0-70℃(20 to 90% RH non-condensed) CE認(rèn)證: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
特點(diǎn) 精確度0.1%滿刻度 ±1位數(shù) 可量測(cè) 交直流電流/交直流電壓/電位計(jì)/傳送器/Pt-100/荷重元/電阻 等信號(hào) 顯示范圍-1999-9999可任意規(guī)劃 具有異常值與異常次數(shù)記錄保留功能 異常信號(hào)過(guò)高或過(guò)低或范圍內(nèi)或范圍外檢測(cè)可任意設(shè)定 報(bào)警繼電器復(fù)歸方式可任意設(shè)定 尺寸小,穩(wěn)定性高 2.主要規(guī)格 精確度: 0.1% F.S. ±1 digit 0.2% F.S. ±1 digit(AC) 取樣時(shí)間: 16 cycles/sec. 顯示值范圍: -1999 - +9999 digit adjustable 啟動(dòng)延遲動(dòng)作時(shí)間: 0-99.9 second adjustable 繼電器延遲動(dòng)作時(shí)間: 0-99.9 second adjustable 繼電器復(fù)歸方式: Manual (N) / latch(L) can be modified 繼電器動(dòng)作方向: HI /LO/GO/HL can be modified 繼電器容量: AC 250V-5A, DC 30V-7A 過(guò)載顯示: "doFL" 溫度系數(shù): 50ppm/℃ (0-50℃) 顯示幕: Red high efficiency LEDs high 14.22mm(.56")(PV) Red high efficiency LEDs high 7.0mm(.276")(NO) 參數(shù)設(shè)定方式: Touch switches 記憶型式 : Non-volatile E2PROM memory 絕緣耐壓能力: 2KVac/1 min. (input/output/power) 1600Vdc(input/output 使用環(huán)境條件 : 0-50℃(20 to 90% RH non-condensed) 存放環(huán)境條件: 0-70℃(20 to 90% RH non-condensed) CE認(rèn)證: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
