Can anyone explain to me what is the purpose of a zero detection circuit? If possible can u include a few diagrams? thanks alot.
2006-10-08 18:16:30 · 4 answers · asked by ngweekiang 1 in Education & Reference ➔ Other - Education
Zero crossing detection is used in several applications. It is particularly important in magnetic digital recordings. These are recorded as "transitions" from one polarity of magnetization to another, each transition representing a "bit". The location of these transitions is used to decode the recording. Since the transition goes from a positive value to a negative value (or vice versa) the zero crossing identifies the location of the transition.
Zero crossing detectors are used in frequency counters, time interval meters as well.
Another application is in electrical power control switching circuits. These circuits control power by interrupting the current flow for a number of AC cycles. Voltage spike and electrical noise are minimized if the switching occurs at the beginning or end of cycles, at the point where the voltage is momentarily zero. A zero-crossing detector controls the switching so that it occurs at close to zero voltage of the cycle.
2006-10-08 18:27:18 · answer #1 · answered by gp4rts 7 · 1⤊ 0⤋
Zero Crossing Detector
2016-09-28 06:23:44 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Though they have wills, the angels are, like all creatures, subject to the will of God. Good angels are sent by God to help believers (Hebrews 1:14). Here are some activities the Bible ascribes to angels: A. They praise God (Psalm 148:1,2; Isaiah 6:3). B. They worship God (Hebrews 1:6; Revelation 5:8-13). C. They rejoice in what God does (Job 38:6-7). D. They serve God (Psalm 103:20; Revelation 22:9). E. They appear before God (Job 1:6; 2:1). F. They are instruments of God's judgments (Revelation 7:1; 8:2). G. They bring answers to prayer (Acts 12:5-10). H. They aid in winning people to Christ (Acts 8:26; 10:3). I. They observe Christian order, work, and suffering (1 Corinthians 4:9; 11:10; Ephesians 3:10; 1 Peter 1:12). J. They encourage in times of danger (Acts 27:23,24). K. They care for the righteous at the time of death (Luke 16:22). No the Bible does not mention angels being crucified.
2016-03-17 04:21:40 · answer #3 · answered by Anonymous · 0⤊ 0⤋
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An angel told the Virgin she was going to give birth to the son of God. An angel stopped Abraham from sacrificing Isaac. Angels never have been crucified. Angels are not *mortal....they are not of this world.
2016-04-09 22:59:21 · answer #4 · answered by ? 4 · 0⤊ 0⤋