Questions tagged [appliances]

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43 views

How do I safely use my US KitchenAid mixer in Malaysia with a transformer? [closed]

I'm buying a KitchenAid mixer from the US through Amazon. The particular model I'm getting, the Professional 600, is rated for 120V 60Hz. The Amazon page says the motor is 575W. Amazon Page (https://...
2
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1answer
82 views

Need help designing a hairdryer

I'm designing a hairdryer as project for a university class, but I'm having trouble regarding the choice of the motor. I need it to have two possible speeds. My first idea was to use an AC motor and a ...
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2answers
42 views

Switches and functions of microwave oven unresponsive on cold start

I have an old microwave oven which performs most of its functions, considering its age. There is a slight problem that the switches go unresponsive and the LCD display fails to operate correctly if I ...
2
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1answer
55 views

How could one “inverter control” convector heater be more electrically efficient than another?

I'll have to explain it step by step so that you have no chance to misunderstand what I'm asking about. First, what a convector heater is. It's a plasma TV shaped box usually made of sheet steel. ...
0
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3answers
64 views

Wiring for solar powered house [closed]

I am trying to design electrical wiring for a small 1-bedroom house which will be only powered from solar panels. The minimum appliances in a house would be: Appliances available in 12V DC: LED ...
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3answers
121 views

Is most of non-isolated power supply “safe”?

I need a large power supply (a little over 1kW) for a consumer appliance that only has a single on/off switch and some non-conductive handles. An off-the-shelf isolated supplies run at least $60 for ...
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2answers
56 views

Why would bridging a varistor with the multimeter leads on any setting have caused the unit to turn on?

So I've been working on fixing this window AC unit for a while, and when I started I knew next to nothing about circuits. At present today, I know a bit about circuits -- enough that i at least know ...
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0answers
54 views

How to Wire 7-lead Fan Motor for 3-speed Honeywell HT-380BPC Table Fan

I have a 3-speed Honeywell fan that stopped turning on when pressing the momentary switch that toggles Low, Med, High, Off modes. I opened it up hoping to find an obvious issue, but didn't see ...
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0answers
20 views

Kitchen Appliance Replacement resistor

I am trying to fix an old Kenwood Chef kitchen mixer that's motor is only working very intermittently. I opened up the unit and found that one of the power resistors are cracked - that is likely ...
0
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2answers
28 views

How does a “mains priority circuit work”?

Dometic makes a series of DC refrigerators and one capability is to hook the fridge up to both DC and AC and it uses a "mains priority circuit" to prefer the AC source to the DC source, if both are ...
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2answers
274 views

Is it possible that an outlet can kill AC motors?

I have two recently dead tower fans. The first, I've had for over 6 months, no problems. Recently, I moved it to a new room an plugged it into a different outlet. It died within a day: it seems to be ...
1
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1answer
68 views

Help in bypassing a defective knob in an airconditioning unit [closed]

I would like to ask for help fixing my airconditioning unit. Please see image for a clearer picture of my problem. So I have a defective knob for switching on/off my airconditioning unit. Since its ...
18
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3answers
5k views

Can I safely use a 6 A, 600 V diode in place of a 6 A, 400 V diode?

Inexperienced electrical person here, but trying to save significant cost to repair an oven. The oven I have has a MR754 diode off the main convection heating element, that has failed. Unfortunately,...
0
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2answers
45 views

Need to operate ac appliances using 5V, 10A relay module with ESP8266 node MCU. How to do it. Please explain the schematics elaborately? [duplicate]

I am having problem in triggering the 5V relay with the output GPIO pin of ESP8266 node MCU. I think the voltage provided by the output GPIO pin is not enough to trigger the relay. I'm thinking of ...
1
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5answers
220 views

Is there a reason that dryers aren't grounded [closed]

One minute ago I cried out in pain, after being electrocuted again by my clothes dryer; probably the thousandth time in my life that this has happened. I was taking out clothes after they're dry, ...
2
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1answer
51 views

Projection clock: how to make a custom display?

I have a projection clock which projects a red image of the current time on the ceiling. I want to know if it's possible to find/build a similar display that would be computer-controlled (project ...
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0answers
54 views

Multiple home appliances emitting the same high pitched noise

About two weeks ago, I came home and noticed a piercing high-pitched noise in my room. After searching for the source of this noise, I found it was coming from my PC's power supply unit. Later that ...
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2answers
205 views

What causes a thorn like feeling when your put your hand in water in electronic appliances?

I live in India, the voltage supply in houses is 220V. Sometimes, for example in my washing machine, when it is full of water and I put my hand in it, I get a feeling like a thorn/tiny nail is ...
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1answer
175 views

Wattage in US vs AU/EU household appliances

This oven is listed in both the US and Australia. You can see that it's the exact same model (BOV845). Yet if you open the specifications, the only difference is that the US model uses 1800 Watts ...
0
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1answer
66 views

What is the most efficient way to increase the frequency of a waveform?

More specifically, I have an electric induction kettle. From what I understand, it heats the water by sending a high frequency (voltage?) signal around ~24kHz. This high frequency signal causes a ...
0
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1answer
443 views

Bypassing refrigerator door alarm piezoelectric buzzer

My appliances keep beeping at me. How can I deactivate or bypass this refrigerator door alarm buzzer without affecting the rest of the circuit? I thought I could just cut/connect the wires at the ...
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2answers
44 views

In powering household devices, is the voltage preset and the amperage varies as needed?

When powering household devices, does a power adapter have a preset (or in some cases user-defined) voltage, while the device (while turned on) "selects"/draws whatever amount of amperage it needs at ...
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3answers
340 views

Do 240V AC switches only need to open the active wire?

I want to add a simple inline switch to a small, mains powered lamp (~240V AC, 10W Max). It's earthed; it has a typical 3-core cable with a 3-pin plug. I bought a bunch of switches, expecting ...
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1answer
404 views

Can i use an AC 15A 250V / 30A 125V rocker in place of a 15A 125V / 10A 250V one?

Amazon sent me the wrong replacement switch so i am wondering if i can use it? Original switch is AC 15A 125V / 10A 250V new one is AC 15A 250V / 30A 125V can i use it without damaging the ...
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3answers
86 views

Oven power usage estimation [closed]

Does an oven draw less power when used at a lower setting? I'm trying to calculate the cost of running my oven on the lowest setting as a dehydrator. Wattage is 4800 kWh/cycle is .92 and my cost for ...
2
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0answers
368 views

In an induction cooktop, what happens to the coils resistance when there is no pot? Does it vary between pots? How does the appliance respond?

An induction cooktop (or an induction rice cooker) uses a copper coil with a high-frequency alternating current going though. The magnetic flux heats any iron-alloy pot placed above. But what ...
1
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1answer
76 views

Convert a blender into a dimmer lamp

I was sitting around and suddenly wanted to convert my old blender into a lamp. The control panel would act as a dimmer switch. (And maybe the pulse button would be a big hit at raves.) Can I just ...
11
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1answer
4k views

Symbols: Double-arrow circle enclosed “10” on electronic appliances

What does the symbol that says 10 inside the double arrowed circle mean? I have seen a similar symbol on another appliance that had the number 25
3
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1answer
93 views

Transient Current Effects from Independent Charging Circuit

I've been working to automate a household appliance. The device is normally controlled by a switch that must constantly be depressed in order for the device to operate. Instead, I replaced this ...
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0answers
124 views

Replacing a blender circuit breaker

I'm replacing a blender's circuit breaker. 750W -Blender Current breaker is rated at 2.8A ~230V So the maximum power output is 640W But the blender itself is rated at 750W. So the lower rated ...
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4answers
880 views

Will a 2000w Step Down Transformer be enough to safely power a Japanese Oven Toaster? [closed]

I recently acquired a Japanese oven toaster, with a maximum power consumption of 1000w at 100v, and I would like to use this appliance in USA. I was told that for safety reasons I should get a step-...
0
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1answer
61 views

Power reading in different places

Currently, I have a software which able to read voltage, current, active power, apparent power and reactive power from appliances which I assume the readings should be approximately same even though I ...
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3answers
272 views

Air Purifier Circuit Mod Help [closed]

I have an air purifier I would like to modify the PCB to an always on state at high setting when plugged in. This would allow me to control the device with and Amazon Echo compatible smart plug. ...
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4answers
3k views

Is it true that when extending a high watt appliance with a extension cord I should use a thicker (higher AMP) cable than the cable of the appliance?

I am an European, so I am not sure if that matters. All I know is that I need a cable with the right amp or wattage throughput capability. Our cables are named as 3x1.5, 3x2.5, 3x3.5 etc, I guess ...
0
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1answer
98 views

How to analyze time-varying current signal?

I want to understand the power consumption profile of my electric blanket in order to determine (a) if it's working properly and, if so, (b) how much power it's consuming. I took some readings with ...
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2answers
7k views

Can I use an extended power cord for washing machine? [closed]

I have heard that the usage of a power cable to a washing machine is not recommended, however I do not have other option for connecting as I have no bathroom power outlets. What is the general ...
16
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4answers
6k views

Why is the neutral pin hotter than the live pin?

I frequently use an Immersion Rod Water Heater (shown below) and I have noticed that the after unplugging the heater, the neutral pin of the 3 pin plug is quite hot (about 5 degrees more - but not ...
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2answers
53 views

Determening some home appliances. Based on their power consumption behavior

I placed a current sensor on the main power line going into my household and I m trying to use that data to determine if an appliance is pluged in such as a fridge or heater. It should be easy since ...
-1
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1answer
101 views

Why would my cooktop burner short across the bottom of a pot?

I had a stainless steel (?) saucepan cooking on my electric stove and there was a buzz and shower of sparks and the element went out. The bottom of the pan has a black mark, kind of like what happens ...
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0answers
77 views

Single-phase motor and speed control with used parts

Asking for a friend who is intending on setting up a one-off, custom-built appliance for a farm. He needs a motor and control scheme for "rotary impact cleaning". It should be: Low-cost (insofar as ...
0
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1answer
5k views

Reversing washing machine motor [closed]

I know how to reverse a single phase induction motor. I also try to understand it using this link. But, I can't understand how to reverse the motor of fallowing wiring diagram. In this diagram, RED ...
0
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0answers
125 views

LED upgrade for cooker hood (12 V AC to 240 V AC or 12 V DC)

I've got a cooker hood with some problematic 2x 12 V 20 W G4 bulb downlights. I want to replace them with LEDs. Unfortunately the units are physically too small to accommodate suitable LED G4s. ...
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1answer
78 views

How to keep a 110V appliance ON for 1 minute every 5 minutes, without arduino? [closed]

I need to turn ON an appliance (110V, 0.5A) for 1 minute every 5 minutes. The immediate solution that comes to mind is arduino/raspberry-pi and with a relay. What kind of circuits would help me ...
0
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2answers
146 views

Does it make sense to only mention amp requirements and not voltage requirement, or vice versa?

When reading about the electrical needs of various electronic devices and/or appliances, I often see a requirement for only one of the various measures related to electricity. For example, it will say ...
3
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2answers
233 views

AC powered microcontroller issue

Context: I got this fancy freezer from Liebherr a while ago and it stopped working. The compressor would fail to run continuosly. I have narrowed down the issue to the control board (behind the front ...
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1answer
6k views

Can 230 voltage device use 220 voltage? [closed]

I have 230 voltage appliances, those are gifts from Germany. I live in Vietnam where the voltage is 220 V. So can I use those appliances safely in my country?
0
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1answer
2k views

replacing home appliances' internal 120v to 220v [closed]

stackexchange, am new to electronics but am fairly resourceful. am asking this question out of curiosity. i have 2 home appliances which I bought in US. A Sunbeam hot shot (hot water) dispenser ...
1
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2answers
150 views

How to discern earth from neutral?

I have a three cable circuit in the kitchen1, I know that one is live, one neutral and one is ground. However, there is no colour2 matching between the standard and the real cables, so I can't use the ...
0
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1answer
106 views

How can a metal object bond to a live object when not touching anything else?

My electric stovetop developed a fault which caused a short circuit inside the unit (sparks flying and all). The fault occurred as one of the knobs came loose and the metal strut that was supporting ...
0
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1answer
3k views

Minimum resistance for a home circuit to not have short circuit

Say the circuit breaks at 10A, and we got 220V like in Europe. If I stick a wire directly from one hole in the outlet to the other, there will be a short circuit. But what is the "treshold resistance" ...