A very common form of latch circuit is the simple "start-stop" relay circuit used for motor controls, whereby a pair of momentary-contact pushbutton switches control the operation of an electric motor. In this particular case, I show a low-voltage control circuit and a 3-phase, higher voltage motor: 000000000 To 3-phase power source F1 F2 Lu Start Stop M1 M1 عاء M1 motor Explain the operation of this circuit, from the time the "Start" switch is actuated to the time the "Stop" switch is actuated. The normally-open M1 contact shown in the low-voltage control circuit is commonly called a seal-in contact. Explain what this contact does, and why it might be called a "seal-in" contact.
A very common form of latch circuit is the simple "start-stop" relay circuit used for motor controls, whereby a pair of momentary-contact pushbutton switches control the operation of an electric motor. In this particular case, I show a low-voltage control circuit and a 3-phase, higher voltage motor: 000000000 To 3-phase power source F1 F2 Lu Start Stop M1 M1 عاء M1 motor Explain the operation of this circuit, from the time the "Start" switch is actuated to the time the "Stop" switch is actuated. The normally-open M1 contact shown in the low-voltage control circuit is commonly called a seal-in contact. Explain what this contact does, and why it might be called a "seal-in" contact.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Transcribed Image Text:A very common form of latch circuit is the simple "start-stop" relay circuit used for motor controls,
whereby a pair of momentary-contact pushbutton switches control the operation of an electric motor. In
this particular case, I show a low-voltage control circuit and a 3-phase, higher voltage motor:
000000000
To 3-phase
power source
F1
F2
Lu
Start
Stop
M1
M1
عاء
M1
motor
Explain the operation of this circuit, from the time the "Start" switch is actuated to the time the "Stop"
switch is actuated. The normally-open M1 contact shown in the low-voltage control circuit is commonly
called a seal-in contact. Explain what this contact does, and why it might be called a "seal-in" contact.
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