Ushirikiano
SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Tangent Galvanometer: 8 Turns on an 11-Inch Wooden Ring with a Pocket Compass (Boy Mechanic, 1913)
A current meter from a wooden ring wound with eight turns of wire and a pocket compass at its centre: set the coil north-south, pass the current, and the needle's swing gives the amperes from a table (0.5 A at 45 degrees).
Kati
An afternoon
Maagizo
1
1
The tangent law
The tangent law
Inapakia daftari la Jupyter…
2
2
Read the Boy Mechanic
Read the Boy Mechanic
"Any deviation from the dimensions will cause errors in the results obtained by its use."
3
3
Make the ring
Make the ring
From 1/2 in wood cut a ring 10-1/2 in outside and 9 in inside. Glue on each side a 1/4 in ring, 9 in inside and 11 in outside, to form a 1/4 in channel round the edge (or turn it from solid). Use brass screws and brads only.
Vifaa kwa hatua hii:
Ubao wa Mti Mgumu1 kipande
Gundi ya Mbao1 kipandeZana zinazohitajika:
Msumeno wa kukata mikunjo
Dira4
4
Wind the coil
Wind the coil
Wind 8 turns of No. 16 insulated magnet wire in the channel and tie the ends.
Vifaa kwa hatua hii:
Waya wa shaba uliopakwa rangi1 kipande
Uzi1 kipande5
5
Base
Base
Cut a round base 11 in across with a slot 1 in wide and 6-5/16 in long in the middle. Stand the ring in it with its inner surface level with the top of the base, held by a small strip screwed to the base. Fit two binding posts and connect the coil ends.
Vifaa kwa hatua hii:
Ubao wa Mti Mgumu1 kipande
Nguzo ya kuunganisha1 kipande
Parafujo za mbao1 kipandeZana zinazohitajika:
Msumeno wa kukata mikunjo
Kekee cha mkono chenye ncha6
6
Mount the compass
Mount the compass
Fix two strips 1/4 x 5/8 x 11 in across the ring with their top edges exactly through its centre, and set a pocket compass about 1-1/4 in across in them, needle centre at the ring centre, zero half-way between the strips. Coat everything with brown shellac.
Vifaa kwa hatua hii:
Ubao wa Mti Mgumu1 kipande
Dira ya sumaku1 kipande
Vanishi ya shelaki1 kipandeZana zinazohitajika:
Msumeno wa mkono7
7
Set up and read
Set up and read
Keep iron, steel and magnets away. On a level table turn it until the needle lies in the plane of the coil at zero. Connect the circuit; 45 degrees means 1/2 ampere; use the table for other angles. His table holds near Chicago and east of it north of the Ohio; multiply by 1.3 south of the Ohio and east of the Mississippi.
8
8
Troubleshooting
Troubleshooting
Galvanometer troubleshooting.
Flow
Loading...
9
9
History and honest limits
History and honest limits
From **The Boy Mechanic, Book 1** (Popular Mechanics, 1913), pp. 150-151 (checked on the archive.org scan boymechanic0000unse_n5a8). His table equals 0.5 x tan(angle); the field-strength note and modern enamelled wire are ours.
Vifaa
8- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- Kishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
Zana Zinazohitajika
4- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.