Firmware - Settembre 2014 / N°104 - (Page 47)

SPOTlight Figura 6. Prova sovraccarico MIL-STD-1275D 100V/500ms SOVRACCARICO Figura 5. La soluzione MIL-STD-1275D da 4A/28V fornisce un'alimentazione continua a carichi di 4A, limitando la tensione di uscita a 44V durante sovraccarichi da 100V/500ms e picchi da ±250V secondo lo standard MIL-STD-1275D; alimenta carichi di 2,8A durante ripple di ±7V. Secondo lo standard MIL-STD-1275D il caso peggiore di dissipazione di potenza del MOSFET si verifica durante una sovratensione della tensione di ingresso a 100V. Il circuito illustrato nella figura 5 regola la tensione di uscita a 44V; di conseguenza il circuito deve far cadere 56V dall'ingresso di 100V all'uscita di 44V. Nella soluzione prevista dallo standard MIL-STD-1275D vengono usati due MOSFET in serie per aumentare l'alimentazione disponibile all'uscita. FOCUS ON SKILLS INSIDE TOOLS ANALOG TIPS'N TRICKS MARKET NEWS SPOTLIGHT EVENTS ZAPPING MEMBERSHIP

Tabella dei contenuti per la edizione digitale del Firmware - Settembre 2014 / N°104

TIPS'n tricks LIN, Local Interconnect Network
FOCUS on Micro Python: arriva la Python board per i sistemi embedded
SKILLs
Più intelligenza nell’Illuminazione a LED
Lampada elettronica a LED con MSP430
INside
Termostati Evoluti da Freescale
Si7005: Sensore di Temperatura e Umidità I2C
ANALOG LDC1000 Inductance to Digital Converter
SPOTlight
“Surge Stopper” Serie LTC 436x da Linear: Alte Prestazioni in Spazi Ridotti
Soluzioni avanzate per la distribuzione del clock: domande e risposte
News
EVENTS zapping
Guida

Firmware - Settembre 2014 / N°104

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