IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Potentiometer: Podolsky Roller-Contact Unit in a Moulded Casing
Podolsky's variable resistor (Wirt Company, US 2,060,114, 1936). The carbon strip is bent into a ring inside a moulded casing, and instead of a sliding wiper a small roller runs round it. A coil spring presses the roller out against the strip with even pressure in every position, even over slight irregularities. The patent gives no sizes; the parts are named by what they do.
The picture: the patent's drawing (Figs. 8 and 9).
Àárín
2 hours
Ìlànà
1
1
Seat the strip in the casing
Seat the strip in the casing
Bend the resistance strip into a ring against the round inner wall of the moulded casing. A small rib across the wall stops both ends of the strip so it cannot shift; the thick part at the rib has a hole for bolting the casing to a panel. Ours: flat-nose pliers to ease the strip in.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Moulded Insulating Casing1 ẹyọ
Ẹya Atako Erogba1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ẹmú Ẹnu Pẹrẹsẹ2
2
Bolt the terminals
Bolt the terminals
Put two terminal bolts through the casing wall, one at each end of the strip. Under each bolt head a small contact plate rests on the coated end of the strip.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Bọ́ọ̀tì ìsopọ̀2 ẹyọ
Contact Plate2 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ẹ̀mú imú gígùn3
3
Fit shaft, sleeve, collar and yoke
Fit shaft, sleeve, collar and yoke
The shaft turns in a sleeve fixed in the base of the casing. A collar on the shaft rests on the outer end of the sleeve; on the inner end the shaft carries a yoke, with a spring washer between yoke and sleeve so the shaft cannot slide. Ours: pliers to seat the spring washer.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá ìdarí1 ẹyọ
Shaft Sleeve1 ẹyọ
Shaft Collar1 ẹyọ
Shaft Yoke1 ẹyọ
Spring Washer1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ẹ̀mú imú gígùn4
4
Fit the sprung roller
Fit the sprung roller
The yoke's slotted ends guide a flat stem. The roller sits in the stem's forked outer end. A washer on shoulders of the stem, pushed out by a coil spring, holds the roller on the strip with even pressure all the way round.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Roller Stem1 ẹyọ
Contact Roller1 ẹyọ
Wáṣà Pẹrẹsẹ1 ẹyọ
Coil Spring1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ẹ̀mú imú gígùnÀwọn ohun-èlò
13- Àyè
- 1 ẹyọÀyè
- 2 ẹyọÀyè
- 2 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
Àwọn irinṣẹ́ tó nílò
2Ìtọ́nisọ́nà yìí ń ṣe
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