This channel is DIY elec projects. The most parts in the videos have been used by the ones recycled. I do my best to make things as simple as possible, at the same time do things safely ! If you have enjoyed the videos, please like, share, comment and subscribe. Your encouragement is my motivation !
Thank you for the interested! The motor itself in the video showed has only one speed however you can change its turning direction by arranging a different way to be connected from the power. In order to control the speed of the motor in the video showed, you have to add an AC Motor Speed Regulator between the power and the motor, that was not showed in the video. Thanks again!
Thank you for the interested! You see: L = 0.00318 * R * Vl / Vr in Henry, it can be L = 0.00318 * R * Vl / Vr * 1000 / 1000 = 3.18 * R * Vl / Vr * 1 / 1000 in Henry. Then it also can be L = 3.18 * R * Vl / Vr in Milli Henry [L = 3.18 R (Vl / Vr) in mL for short in the video showed]. That's reason 3.18 showed. Thanks again.
Secondly when testing a motor like this if u must get a stable resistance, if u get a fluctuating resistance or OL that means that the windings are finished am i correct
That'd indicated the motor had the kind of faulty and you were right at this stage but it might have indicated other cause (s), certainly it needs to do further investigate if you'd want to be sure. 👍
Thanks for your interested! If all windings were equal in ohms, I'd say the winding (s) in that motor were at faulty such as some part of winding (s) burnt or short completely. The motor needs to be disassembled and further checked.
Thanks for the interested & yes, you've spotted one thing on! To put it in the simplest way for answering: The reasons for attaching a capacitor to a single phase AC motor are (1) Easy to start motor & then run it smoothly as you've mentioned. (2) To improve Power Factor because the coils inside AC motor as whole can be seen as an inductor in the AC circuit, so you might have known already - an inductor has the voltage 90 degree advanced over its current however a capacitor has the voltage 90 degree behind its current, in practical circuit a capacitor & a motor together will compensate some phase angles each other but all, that will be the result for improving Power Factor for whole grid system (for your own benefit, improving Power Factor, the less current goes through your home elec meter, the less the power bill you have to pay).
Nice how you demistrated that I love wiring thing and making it work to me it's enjoying and satisfaction of me actually doing it and doing it right ,I v learned a lot from people on RU-vid I wired all the outlets in my house my grandfather built in 1945 he would be vary proud of me to see all the work I have done to my house 4 year home owner now i tell you its not easy ,thank you sir for the video ,sincerely Ross Valencia.
If i connected the shunt between battery negative and body (my car is body grounded) and connected the ammeter, will it work? Can it withstand with the current drawn by selfmotor? Will the shunt allow to flow that much current for starter and all ? Or it be a problem which shunt being the weaker link in the line and blows off?
I love your question, Mate! Yes & No!!! This DC mini digital meter's limitation: Max 100V & 100A which it can only withstand! it will be okay for starting current from motorcycles or mini cars however for other cars' starting current can be range of 100 to 250A in the most cases, so it'd be highly likewise to blow off the meter & shunt. Incidentally speaking, the way of mini meter & shunt connected in the video showed must be seen as whole thing then to connect it to whatever the circuit is. Good luck! 👍
@@diymade2175 so i have to connect the shunt after the starter, but how can i connect the shunt in a positive line, in the video shunt goes in the negative. As all my electrical equipments are grounded to body where can i connect the shunt? Or better to connect in the alternator line?
@@arunck5779 Theoretically speaking, you can connect it in either ways: In the alternator line or after the starter however in your case, to connect in the alternator line would be challenging & cause some troubles in the practical situation. It will be better to connect it after the starter: (1) Disconnecting negative(-) terminal cable from your car's battery. (2) Connecting Shunt's one end (Thick Black Wire connected from the mini meter) to car's battery negative(-) terminal, of course you have to use a suitable cable which can withstand starting current such as a jumper lead. (3) Connecting Shunt's other end (Thick Red Wire connected from the mini meter) to car's body or the Black cable that you disconnected from battery negative terminal for seconds ago, again by using another jumper lead as you wish. That's it, then start your car and good luck & enjoy! 👍
Thanks for your question! Primary windings: Center tapped - 2 x 10 turns & 20A wires or cables. Secondary windings: this coil was original "primary windings" from MOT, I didn't know exactly its turns however by the actual tested, I'd think it had 220 turns approximately & AWG 16. Enjoying your experience! 👍👍
Thank you for the interested! DC 4 - 30 V is the range of Mini Digital Vol & Amp Meter's supply voltage: In order to let the Meter work, it needs to have a DC power given (such as DC 5 V, 9 V, 15V, 24 V & Max 30 V etc). On the other hand, DC 100 V & 100 A are Max voltage and current that Meter can measure for the practical circuit in use for example: You have a DC motor with max 72 V & 12 A capacity, then using the Meter in the video showed to measure or monitor that motor's running Voltage and Amperes. Cheers 👍
Thanks for your interested! Well, I was not sure how many turns for the primary coil however by the actual tested, I reckoned the primary coil would be 270 turns(240 V) more or less. the secondary was 16 turns (14 V) center tapped which means 2 x 16 turns(2 x 14 V). Incidentally the more details can be read on subtitles, just turn on "CC" on your device.
It should be 11 volts not 14 because after bridge rectifier you get peak AC voltage which is 11 * root(2) = 15.5V, minus bridge diode drop 0.5 x 2 = 14.5 final voltage
Your calculation logic was alright however your statement was not correct. In normal circumstances the value of AC voltage is used as Root Mean Square value (Vrms for short) such as AC 120 V, 220 V, 230 V or 240 V etc they are all Vrms value. On the the hand, the peak value of AC voltage is used at the time to consider the component's limitation. Thanks for your interested!
this is exactly I wanted to know the AC single phase motor, so, 2 winding opposite side, 1 neutral point, 1 phase and another phase has 3 cables in different position to create difference in resistance.
Why is the capacitor has to be connected to the highest resistance wires (red and white) here.? I'm not good at electricity knowledge, but very interested in learning about it. Any comments will be appreciated.
For answering your question thoroughly it'd need a few hundred of the words, however typing it as simple as possible and hope this can explain regarding your concern. A single phase AC motor with a capacitor attached, which its stater has two coils in series built. As showed in the video, the way of a capacitor connected can provide: (1) An easy & smooth to start the motor. (2) When the motor running, improving the power factor as you might have known - the coils inside motor as an inductor in AC circuit has voltage phase 90 degree advanced its current however a capacitor in AC circuit has voltage phase 90 degree behind its current, so they compensate some part of phase angles each other but not all in practical circuit. In order to get (1) & (2), a capacitor must be connected to the highest resistance wires. On the other hand, if a capacitor is not so connected as the video showed: It'll either burn a capacitor or not get above (1) & (2). Thanks. 👍
i love how you did this !!! just what i wanted !! : ) i just wanted someone to show the actual sizes and show me the wattages !!! show me the money baby !!! : P nice and simple ! no silly equations !!
Although I'm not a vacuum cleaner's technician, your circumstances might have been different and following points are general guides only: In the most cases, rats would not get into the motor so locating where was the wire(s) or other damaged by dissembling the vacuum case carefully - I suppose you have the basic tools such as: Screw drivers & a pliers. For repairing wire(s), make sure to have a good insulation. Incidentally speaking, the motor has two type: AC motor or DC motor - there is a small printed circuit board inside cleaner's case for DC motor, it might need to check the circuit board & associated wires as well. Good luck! 😶👍
I was always curious to try this but never did. Always warned that lpg and auto lpg are VERY different. Auto gas is not corrosive, however gas bottle lpg is. Auto lpg has an oil additive that is separated before combustion. Mechanics drain this as part of a regular service. This would get you by in a pinch if you ran the tank dry, but it's definitely not recommended by mechanics. Cool to see though
👍👍 You are right. Regarding to deal with LPG: The one has to know what to do & how to get it done safely, certainly this is not for the most people in general. Cheers!
I have three resistors that burned up but still give a reading. Thanks to your guide I have determined that there are two Watts but each one reads a different ohm reading. Reads 5.4 ohms the second one reads 5.6 ohms the third one reads 5.7 ohms. How do I figure out what's the actual ohm for these three resistors? Any help would be appreciated
Thanks for your interested! There are the standard resistor's value tables such as the system of E24, E48, E96 etc. Taking the system of E96 as an example which its resistor's value has 1% tolerance across range: 1.0, 1.02, 1.05 ... 5.11, 5.23, 5.36, 5.49, 5.62, 5.76, 5.90 ...9.65, 9.76, 9.88 ohms i.e. so you can match three of your resistors to the closest values of the system E96. However as you've indicated: "three resistors that burned up but still give a reading", in the most cases the resistor's value(s) would go up after burned and their reading would be varies depending on their burned condition. There was not much you could do unless, unless you could pin point the function of three resistors in the circuit then you'd compare to the similar circuit(s) to eliminate the other values. Good luck! 👍👍
Very good , when does the internal resistance become a factor so to use formula C? Is it at a high frequency or do you need a sensitive ohm meter ? When to use mains power 50hz , is it the power rating of the coil? The resistor power rating if you use 100w globe ? Sorry to be a pain , amazing how often pie is used and accurate. Thanks .
Good thought, Mate. To measure Inductance, it has been not an easy & simple task especially on high frequency. To be all things considered thoroughly, the best way is to try the experience a few times by using a normal multi meter and steps in the video then you'd figure yourself out and make sure to play safe! I'd use formula C for lower frequency range such as below a coupe of thousand Hz. In order to do electric project(s) properly, there are three steps (at least two steps) need to be done: (1) Design or draft a circuit, (2) experience or test, (3) Conclusion or may be, to do an improvement as well. Thanks for your interested & good luck! 👍👍
Thanks you for the interested! The charger's circuit in the video requires to have functions of Half & Full Wave Rectify which you might have already known: The components in that circuit need at least (1) a transformer with a center tapped output terminals, (2) two diodes, however a Metal Bridge Rectifier used instead. MBR acts just like two diodes in the charger's circuit so no need to have "take-ve power from bridge rectifier and took from center pin of transformer" as you indicated. The other reasons for using a MBR were the better cooling and convenience at the time the video produced. Indeed, it is not necessary to have a capacitor for Car Battery Charger however you could add one if you wish. Cheers!
Good question, Mate. It is Max 50 A with a condition: Metal Bridge Rectifier must be attached a suitable heat sink: The larger current goes through, the bigger heat sink will be. Although you can run it without a heat sink under a coup of amperes for a short period time without a problem. Best wish!
No, no !! In that case, a capacitor will be certainly burnt out and so does the AC motor: may be, may be some damaged, depending on that motor condition. Thanks for your interested!
Great Stuff! Is it the same principle for wiring a water pump with three leads? A quick reply would be much appreciated. Thanks and warmest regards. (Sham).
Thanks for your question - yes, it is the same principle as long as your water pump motor is an AC single phase and make sure to check the one of three wires from motor: Earth Wire or not. Good luck! 👍
