Aquarium Air Pump Repair - Transformer Rewinding 

berapa lilitan tuh bang

@@muhammadhasbi3771 Anda perlu mengukur dimensi inti bagian dalam untuk dapat menghitung jumlah belokan. Lihat pada jam 2:00 video untuk menghitung jumlah putaran.

What is 42

@@atishubhamkumar9404 42 is a constant number and cannot be changed.

What is wire number sir

You mean the number of turns? If yes, it depends upon the size of your transformer inner core, Just follow the formula that i have shown in this video.

@@ronron322 yes yes i was asking about that and 🙏🙇 thx for reply

The best way is to repair the circuit board. You must test all the electronic components with a multimeter and replace those faulty componets. Just test the voltage rail from the battery socket going to the motor. What is the recommended operating voltage of your DC PUMP?

@@ronron322 the old battery was 3.7 v I'm using li-ion .the electronic components are damaged and the transformer doesn't work well when I connect it with the battery

@@ronron322 there's no motor just small electromagnetic transformer

​@@captmohelsaadany6751 The transfomer should not work if you directly connect it with the battery. The transformer needs a switching TRANSISTOR to oscillate in the primary winding in order to produce the desired voltage in the secondary winding. The Transformer cannot operate without a ciruit.

@@ronron322 I'm looking for that circuit to run the transformer. please advise if u have any links for the oscillating schematic circuit

220*50=5500 turns

if your transformer is big enough it should fit.

Just identify the current consumption of your device. The airpump in this video is rated 4 Watts and we are using 220V in our country. Current = 4 Watts / 220V Current = 0.018 Wire Guage = 39 Refer to the Chart below: Gauge Max Current 1 119 2 94 3 75 4 60 5 47 6 37 7 30 8 24 9 19 10 15 11 12 12 9.3 13 7.4 14 5.9 15 4.7 16 3.7 17 2.9 18 2.3 19 1.8 20 1.5 21 1.2 22 0.92 23 0.729 24 0.577 25 0.457 26 0.361 27 0.288 28 0.226 29 0.182 30 0.142 31 0.113 32 0.091 33 0.072 34 0.056 35 0.044 36 0.035 37 0.0289 38 0.0228 39 0.0175 40 0.0137

It depends on how many watts your pump can operate. For this pump, it can operate 4 watts, so i used #38 wire. Each wire size corresponds different wattage. You may use google for the wattage of each wire size.

Use bigger wire for 8watts, maybe #34, same number of turns.

@@ronron322 my core is 1.7 cm x 1.7 cm would #34 will fit doing 4620 turns???

@@ronnelmindo898 just use 36 or 38

@@ronron322 #36 or # 38 how many turns sir for 8 watts??? 4620 turns??? many thanks

@@ronnelmindo898 if your core is not the same as mine in this video, you should compute it using the formula I used in the video. Do not follow the number of turns I used in this video because the size of the core we are using is different.

Still the same. Just follow the computations for the number of turns in this video.

No, its continous. And if your wire is shorter, you may extend the wire and connect with another wire, you may solder both ends and cover with a tape.

I put those markings 1k, 2k, 3k etc. in case i forget the count, ill just go back to those markings.

Thank you.

Its more thicker wire than you used

Just follow the same formula, as long as the thicker wire fits, it will be fine.

@@ronron322 so i just make 4620 turns?even its thicker?

@@jingleoropa1524 it doesn't work if 4620 turns doesn't fit in the inner core, i don't really know if avr transformer windings will fit. Just try to use the primary winding of the avr.

@@jingleoropa1524 And also the number of turns depends on the size of your inner core. Just follow the formula that I used.

You can use gauge 38 or 39.

fixed value, a value that does.not change.

@@ronron322 o me I have a sobo sb-988 but it got burnt ,How do I re-coil the transformer?

@@ronron322 How many mm wire and how much trans will please tell me sir?

@@সখেরবশেকরেছি #38 wire. just compute the number of turns using the formula that i used.

This is unrepairable.

Just continue, do not cut.

It is 7.5 if the core dimensions are in inches and 42 if the core dimensions are in cms

same number of turns.