Glossary entry (derived from question below)
English term or phrase:
pull-down resistor
Russian translation:
Резистор защитного смещения
English term
pull-down resistor
If the pull-down resistor is not there, the bridge chip could think that the attached device is a master when it is a slave or could think that it is a slave when it is really a master. Because of this you should be safe and add the pull-down resistor. (Cypress Semiconductor Corporation)
If your PIC's pins are set to INPUT, they will be floating (high impedance). In that case, you would still need pull-up or pull-down resistors for an external CMOS device that was getting input from that pin of the PIC. (All About Circuits)
These USB devices have a default power-up state of logic high, because they have an internal pull-up resistor. Attaching an external pull-down resistor will note yield a logic low start up state. (National Instruments Corporation)
| 4 +3 | Резистор защитного смещения |
Igor Babichev
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Mar 15, 2010 16:36: changed "Kudoz queue" from "In queue" to "Public"
Mar 15, 2010 16:55: changed "Stage" from "Preparation" to "Submission"
Mar 18, 2010 17:56: changed "Stage" from "Submission" to "Selection"
Mar 18, 2010 18:54: changed "Stage" from "Selection" to "Completion"
Proposed translations
Резистор защитного смещения
Для обеспечения должного уровня напряжения в неактивном состоянии сети используются резисторы защитного смещения: резистор задания начального высокого уровня (pullup) на линии B (обычно до 5 вольт) и низкого уровня (pulldown) на линии A. (Рекомендации по приме)
Величины сопротивлений для резисторов защитного смещения (Rзс) нетрудно рассчитать по делителю. (RS-485 для чайников)
Устанавливают резистор задания начального высокого уровня (pull-up) на линию А и низкого уровня (pull-down) на линию B. В сети Modbus защитное смещение устанавливается только рядом с ведущим устройством. (Введение в протокол Mod)
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