File:OldBuzzer.png - Revision history

DT Online at 13:18, 27 January 2018

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	Contributing Library: Information and Library Science Library, University of North Carolina at Chapel Hill		Contributing Library: Information and Library Science Library, University of North Carolina at Chapel Hill
	Digitizing Sponsor: University of North Carolina at Chapel Hill		Digitizing Sponsor: University of North Carolina at Chapel Hill

			View Book Page: [https://archive.org/stream/stnicholasserial322dodg/stnicholasserial322dodg#page/1119/mode/1up '''Book Viewer''']

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DT Online at 13:15, 27 January 2018

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	[Category:Electronics Components]		[[Category:Electronics Components]]

DT Online at 13:14, 27 January 2018

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	On the base,near the armature-block a binding-post is made fast. The current passes in through the ~~wireA~~, goes through the coils and around to ~~thescrew~~ B, then through the armature to ~~theblock~~ and out through the wire C. In its ~~cir-cuit~~ the bolts are magnetized and they ~~drawthe~~ armature, but the instant they do so ~~theloose~~ spring-brass end is pulled away from ~~thescrew~~ at B and the circuit is broken,— the ~~boltscease~~ to be magnetized then and the ~~armatureflies~~ back as the spring-brass neck at D ~~makesit~~ do so. The loose brass-end then, on ~~touch-ing~~ the screw-point, conducts the current ~~throughthe~~ coils again with the continual vibrating ~~ac-tion~~ as long as the electric current is ~~passingin~~ at A and out at C. The greater the ~~volumeof~~ current the greater the number of vibrations,and to properly regulate the contact, the set-screw B must be adjusted at the right point. hole in the middle of it, an upholsterers brass-headed tack is driven for the under side of the		On the base, near the armature-block a binding-post is made fast. The current passes in through the wire A, goes through the coils and around to the screw B, then through the armature to the block and out through the wire C. In its circuit the bolts are magnetized and they draw the armature, but the instant they do so the loose spring-brass end is pulled away from the screw at B and the circuit is broken,— the bolts cease to be magnetized then and the armature flies back as the spring-brass neck at D makes it do so. The loose brass-end then, on touching the screw-point, conducts the current through the coils again with the continual vibrating action as long as the electric current is passing in at A and out at C. The greater the volume of current the greater the number of vibrations, and to properly regulate the contact, the set-screw B must be adjusted at the right point. hole in the middle of it, an upholsterers brass-headed tack is driven for the under side of the

	'''Text Appearing After Image:'''		'''Text Appearing After Image:'''
	~~GENERAL VIEW OF BUZZER.~~ Paste pieces of heavy paper over the heads ~~ofthe~~ bolts to overcome residual magnetism. An electric bell is made the same as a buzzer,but, continuing on from the end of the armature,a wire or rod is mounted with a ball or ~~clapperat~~ the end, which strikes the bell as the ~~currentcauses~~ the armature to vibrate. TELEGRAPH-KEY AND SOUNDER. Telegraph instruments are very simple tomake and two boys can easily have a line be-tween their homes. The key is simply a contact maker andbreaker, so that the circuit can be convenientlyand rapidly opened and closed by the operator.A simple telegraph-key is shown in Fig. 28.The base-board is 4 by 6 inches and ^ inchthick. At the front end a small metal con-nector-plate is screwed fast, and, through a		Paste pieces of heavy paper over the heads of the bolts to overcome residual magnetism. An electric bell is made the same as a buzzer, but, continuing on from the end of the armature, a wire or rod is mounted with a ball or clapper at the end, which strikes the bell as the current causes the armature to vibrate.



	[Category:Electronics Components]		[Category:Electronics Components]

DT Online at 13:03, 27 January 2018

2018-01-27T13:03:28Z

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	On the base,near the armature-block a binding-post is made fast. The current passes in through the wireA, goes through the coils and around to thescrew B, then through the armature to theblock and out through the wire C. In its cir-cuit the bolts are magnetized and they drawthe armature, but the instant they do so theloose spring-brass end is pulled away from thescrew at B and the circuit is broken,— the boltscease to be magnetized then and the armatureflies back as the spring-brass neck at D makesit do so. The loose brass-end then, on touch-ing the screw-point, conducts the current throughthe coils again with the continual vibrating ac-tion as long as the electric current is passingin at A and out at C. The greater the volumeof current the greater the number of vibrations,and to properly regulate the contact, the set-screw B must be adjusted at the right point. hole in the middle of it, an upholsterers brass-headed tack is driven for the under side of the		On the base,near the armature-block a binding-post is made fast. The current passes in through the wireA, goes through the coils and around to thescrew B, then through the armature to theblock and out through the wire C. In its cir-cuit the bolts are magnetized and they drawthe armature, but the instant they do so theloose spring-brass end is pulled away from thescrew at B and the circuit is broken,— the boltscease to be magnetized then and the armatureflies back as the spring-brass neck at D makesit do so. The loose brass-end then, on touch-ing the screw-point, conducts the current throughthe coils again with the continual vibrating ac-tion as long as the electric current is passingin at A and out at C. The greater the volumeof current the greater the number of vibrations,and to properly regulate the contact, the set-screw B must be adjusted at the right point. hole in the middle of it, an upholsterers brass-headed tack is driven for the under side of the


	'''Text Appearing After Image:'''		'''Text Appearing After Image:'''
	GENERAL VIEW OF BUZZER. Paste pieces of heavy paper over the heads ofthe bolts to overcome residual magnetism. An electric bell is made the same as a buzzer,but, continuing on from the end of the armature,a wire or rod is mounted with a ball or clapperat the end, which strikes the bell as the currentcauses the armature to vibrate. TELEGRAPH-KEY AND SOUNDER. Telegraph instruments are very simple tomake and two boys can easily have a line be-tween their homes. The key is simply a contact maker andbreaker, so that the circuit can be convenientlyand rapidly opened and closed by the operator.A simple telegraph-key is shown in Fig. 28.The base-board is 4 by 6 inches and ^ inchthick. At the front end a small metal con-nector-plate is screwed fast, and, through a		GENERAL VIEW OF BUZZER. Paste pieces of heavy paper over the heads ofthe bolts to overcome residual magnetism. An electric bell is made the same as a buzzer,but, continuing on from the end of the armature,a wire or rod is mounted with a ball or clapperat the end, which strikes the bell as the currentcauses the armature to vibrate. TELEGRAPH-KEY AND SOUNDER. Telegraph instruments are very simple tomake and two boys can easily have a line be-tween their homes. The key is simply a contact maker andbreaker, so that the circuit can be convenientlyand rapidly opened and closed by the operator.A simple telegraph-key is shown in Fig. 28.The base-board is 4 by 6 inches and ^ inchthick. At the front end a small metal con-nector-plate is screwed fast, and, through a

DT Online at 13:02, 27 January 2018

2018-01-27T13:02:59Z

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	Simple Electro-mechanical Buzzer		'''Simple Electro-mechanical Buzzer'''

			Image from page 688 of "St. Nicholas [serial]" (1873)
			Identifier: stnicholasserial322dodg
			Title: St. Nicholas [serial]
			Year: 1873 (1870s)
			Authors: Dodge, Mary Mapes, 1830-1905
			Subjects: Children's literature
			Publisher: [New York : Scribner & Co.]
			Contributing Library: Information and Library Science Library, University of North Carolina at Chapel Hill
			Digitizing Sponsor: University of North Carolina at Chapel Hill

			'''Text Appearing Before Image:'''
			On the base,near the armature-block a binding-post is made fast. The current passes in through the wireA, goes through the coils and around to thescrew B, then through the armature to theblock and out through the wire C. In its cir-cuit the bolts are magnetized and they drawthe armature, but the instant they do so theloose spring-brass end is pulled away from thescrew at B and the circuit is broken,— the boltscease to be magnetized then and the armatureflies back as the spring-brass neck at D makesit do so. The loose brass-end then, on touch-ing the screw-point, conducts the current throughthe coils again with the continual vibrating ac-tion as long as the electric current is passingin at A and out at C. The greater the volumeof current the greater the number of vibrations,and to properly regulate the contact, the set-screw B must be adjusted at the right point. hole in the middle of it, an upholsterers brass-headed tack is driven for the under side of the


			'''Text Appearing After Image:'''
			GENERAL VIEW OF BUZZER. Paste pieces of heavy paper over the heads ofthe bolts to overcome residual magnetism. An electric bell is made the same as a buzzer,but, continuing on from the end of the armature,a wire or rod is mounted with a ball or clapperat the end, which strikes the bell as the currentcauses the armature to vibrate. TELEGRAPH-KEY AND SOUNDER. Telegraph instruments are very simple tomake and two boys can easily have a line be-tween their homes. The key is simply a contact maker andbreaker, so that the circuit can be convenientlyand rapidly opened and closed by the operator.A simple telegraph-key is shown in Fig. 28.The base-board is 4 by 6 inches and ^ inchthick. At the front end a small metal con-nector-plate is screwed fast, and, through a



	[Category:Electronics Components]		[Category:Electronics Components]

DT Online: Simple Electro-mechanical Buzzer [Category:Electronics Components]

2018-01-27T12:59:23Z

Simple Electro-mechanical Buzzer [Category:Electronics Components]

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Simple Electro-mechanical Buzzer

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