Cov txheej txheem:

LED VU Qib hauv 20cents: 3 Kauj Ruam
LED VU Qib hauv 20cents: 3 Kauj Ruam

Video: LED VU Qib hauv 20cents: 3 Kauj Ruam

Video: LED VU Qib hauv 20cents: 3 Kauj Ruam
Video: 20 товаров для автомобиля с Алиэкспресс, автотовары №30 2024, Kaum ib hlis
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LED VU Qib hauv 20cents
LED VU Qib hauv 20cents

VU meters tau xub tsim los rau ntiaj teb kev sib piv kom pom qhov nruab nrab ntawm lub teeb liab. Yog lawm, VU meter qhia qhov nruab nrab ntim lossis nrov nrov ntawm lub teeb liab uas tau xa los ntawm nws.

VU meter qhia qhov nruab nrab nrov nrov ntawm lub teeb liab. Nws qhia txog lub zog thiab siv zog ntawm cov nkauj. Hauv kev sib xyaw, VU meter qhia qhov tseeb ntawm qhov sib xyaw. One ntawm lub hom phiaj ntawm VU meter yog qhov no: nws muaj kev noj qab haus huv kom muaj qee yam "ciam teb" thaum sib xyaw nkauj. 0VU tuaj yeem xav tias yog ciam teb. Tab sis nws tsis yog qhov txwv tsis pub tshaj. Nws yog qhov zoo mus me ntsis dhau 0VU, vim nws tsis "mob" sib xyaw hauv txhua txoj kev. Mus ntau dhau, thiab koj qhov sib xyaw tuaj yeem raug kev txom nyem. Feem ntau, 2-3VU tuaj yeem suav tias yog qhov txwv.

Kauj ruam 1: Taw qhia

Taw qhia
Taw qhia

LED vu meters siv IC thiab lub zog siv.

Qee lub sij hawm qhov ntsuas vu yooj yim yog qhov xav tau uas koj tuaj yeem txuas rau cov xov tooj cua.

Nov yog kev sim tsim. tus ncej muaj Circuit thiab video rau koj txaus siab!

sau keeb kwm

VU meters tau xub tsim los rau ntiaj teb kev sib piv kom pom qhov nruab nrab ntawm lub teeb liab. Yog lawm, VU meter qhia qhov nruab nrab ntim lossis nrov nrov ntawm lub teeb liab uas tau xa los ntawm nws.

Kauj Ruam 2: Qhov Tsawg Min Circuit

Qhov Bare Min Circuit
Qhov Bare Min Circuit

Tus ntaiv raws LED dropper yog ntsuas rau 8v Ntawm lub zog siab tshaj plaws …

tus tiv thaiv tuaj yeem siv los txwv qhov tam sim no nrog tus nqi 22E

Vam tias txhua tus yuav nyiam nws

Kauj ruam 3: VDO Demo

Nov yog daim vis dis aus, koj tuaj yeem txhim kho nws

siv joule tub sab thiab lwm yam

Pom zoo: