12V to 120V Inverter

Tags: 12V to 120V Inverter, power inverter

12V to 120V Inverter

Have you ever wanted to run a TV, stereo or other appliance while on the road or camping? Well, this inverter should solve that problem. It takes 12 VDC and steps it up to 120 VAC. The wattage depends on which tansistors you use for Q1 and Q2, as well as how "big" a transformer you use for T1. The inverter can be constructed to supply anywhere from 1 to 1000 (1 KW) watts.

Pernahkah anda ingin menjalankan TV, Radio Stereo atau alat-alat elektronik lainnya selama di jalan atau camping ? Baiklah Inverter ini akan mengatasi masalah anda. Hanya dibutuhkan 12 V arus DC dan diubah men jadi 120 V arus AC. Watt-nya tergantung dengan transistor yang anda gunakan untuk Q1 dan Q2, dengan seberapa besar sebuah transformer yang anda gunakan untuk T1. Inverter dapat dibuat untuk mensupply apa saja dari 1 sampai 1000 watts ( 1 KW).

Berikut ini schematic-nya :

Parts (Komponen)
Parts Total Qty. Description
C1, C2
2
68 uf, 25 V Tantalum Capacitor
R1, R2
2
10 Ohm, 5 Watt Resistor
R3, R4
2
180 Ohm, 1 Watt Resistor
D1, D2
2
HEP 154 Silicon Diode
Q1, Q2
2
2N3055 NPN Transistor (see "Notes")
T1
1
24V, Center Tapped Transformer (see "Notes")
MISC
1
Wire, Case, Receptical (For Output)

Notes (Catatan)

No. Description
1
Q1 and Q2, as well as T1, determine how much wattage the inverter can supply. With Q1,Q2=2N3055 and T1= 15 A, the inverter can supply about 300 watts. Larger transformers and more powerful transistors can be substituted for T1, Q1 and Q2 for more power.
2

The easiest and least expensive way to get a large T1 is to re-wind an old microwave transformer. These transformers are rated at about 1KW and are perfect. Go to a local TV repair shop and dig through the dumpster until you get the largest microwave you can find. The bigger the microwave the bigger transformer. Remove the transformer, being careful not to touch the large high voltage capacitor that might still be charged. If you want, you can test the transformer, but they are usually still good. Now, remove the old 2000 V secondary, being careful not to damage the primary. Leave the primary in tact. Now, wind on 12 turns of wire, twist a loop (center tap), and wind on 12 more turns. The guage of the wire will depend on how much current you plan to have the transformer supply. Enamel covered magnet wire works great for this. Now secure the windings with tape. Thats all there is to it. Remember to use high current transistors for Q1 and Q2. The 2N3055's in the parts list can only handle 15 amps each.

Cara paling mudah dan paling murah untuk mendapatkan T1 adalah dengan menggulung ulang sebuah transformer lama dari sebuah microwave. Transformer yang dibutuhkan 1 KW. Semakin besar microwave-nya semakin besar pula transformernya. Lepaskan transformer pelan2 dan jangan menyentuh capacitor high voltage karena mungkin masih ada arus yang tersimpan. jika perlu anda bisa mengetest transformer tsb, tapi biasanya kondisinya masih baik. Sekarang lepaskan 2000 V secondary-nya, hati -hati jangan sampai merusak primary-nya. Lilit-lah 12 puitaran dari kawat di bagian tengah dan 12 putaran lagi. Ukuran dari kawat tergantung pada seberapa besar anda inginkan transformer bisa mensupply. Lapisi kawatnya dengan isolatape supaya performa kerjanya baik. Ingat untuk menggunakan transistor tegangan tinggi untuk Q1 dan Q2. komponen 2N3055 bisa menangani sampai 15 amps masing2nya.

3
Remember, when operating at high wattages, this circuit draws huge amounts of current. Don't let your battery go dead :-).
Ingat, ketika beroperasi pada watt yang tinggi, circuit akan menarik arus yang besar.
4

Since this project produces 120 VAC, you must include a fuse and build the project in a case.

Karena proyek ini menghasilkan 120 Volt AC, maka anda perlu memakai fuse (sekering) dan bungkus proyek ini dengan casing.

5

You must use tantalum capacitors for C1 and C2. Regular electrolytics will overheat and explode. And yes, 68uF is the correct value. There are no substitutions.

Anda harus menggunakan capacitor tantalum untuk C1 dan C2.

6

This circuit can be tricky to get going. Differences in transformers, transistors, parts substitutions or anything else not on this page may cause it to not function.

Perbedaan pada transformer, transistor dan komponen pelengkap yang tidak ada di halaman ini akan menyebabkan alat tidak berfungsi.

7

If you want to make 220/240 VAC instead of 120 VAC, you need a transformer with a 220/240 primary (used as the secondary in this circuit as the transformer is backwards) instead of the 120V unit specified here. The rest of the circuit stays the same. But it takes twice the current at 12V to produce 240V as it does 120V.

Jika anda ingin membuat 220/240 VAC sebagai ganti dari 120 VAC, anda membutuhkan transformer 220/240 sebagai primary. Untuk sirkuit yang lain tetap sama, dibutuhkan arus 12V dua kali untuk menghasilkan 240V seperti halnya 120 V.

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