Questions tagged [appliances]
The appliances tag has no usage guidance.
70
questions
0
votes
2answers
89 views
Solving for using 120 V, 60 Hz washing machine and dryer in 240 V, 50 Hz environment
Thanks in advance for the feedback. My family will be building our dream home and moving to Europe in a few years. I’ve lived in various regions of the world and one of the biggest conveniences that I ...
1
vote
1answer
71 views
What causes an induction cooker to lower heat level by itself [closed]
It's more than 5 years old. It is difficult to cook in high temperature because the minus sensor appears to be activated all the time. I end up going from 1600 to 400 every time. What must be the ...
4
votes
1answer
79 views
Why do European motorized appliances draw less inrush current than their American counterparts?
I have been trying to tease apart the history and evolution of arc fault circuit interrupter requirements, and in the process, came across a curious historical sidenote early in its genesis, namely ...
0
votes
1answer
27 views
Rated voltages for the Cage clamp connectors?
what does the rated voltage for a connector means? How should we select the connector for a 230V AC application?
Let us say can I use this connector for my 230V AV application?
https://www....
0
votes
1answer
41 views
Calculating wattage of electrical appliances
I need some help from you. I don't know how to calculate wattage of my refrigerator. It has a warmer part and cooler part. Below is its configuration.
Also, if you guys don't mind, please roughly ...
0
votes
1answer
76 views
Securing a very, very old 220V switch
We recently acquired a very old saw that accepts either 220V or 120V.
It came with a suicide (male-male) cord, in turn going to a female-socket cable:
which in turn goes to a DPST switch:
in turn ...
0
votes
1answer
93 views
Do thermal cutoff fuses wear out if used below rated temperature?
I tend to keep my electrical applicances alive for decades and have had several thermal fuses (the non-resettable axial kind) repeatedly wear out for no apparent reason, some of them in expensive ...
0
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5answers
298 views
Why do household appliances use DC motors? [closed]
Couldn’t appliances like fans also use AC motors? What is the advantage of converting to DC?
2
votes
1answer
133 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 ...
1
vote
2answers
48 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
votes
1answer
132 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
votes
3answers
74 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 ...
0
votes
3answers
178 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 ...
1
vote
2answers
121 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 ...
0
votes
0answers
40 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
votes
2answers
84 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 ...
4
votes
2answers
363 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
vote
1answer
71 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
votes
3answers
6k 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
votes
2answers
66 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
vote
5answers
497 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
votes
1answer
72 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 ...
0
votes
2answers
215 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 ...
1
vote
1answer
639 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
votes
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
votes
1answer
834 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 ...
0
votes
2answers
50 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 ...
0
votes
3answers
535 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 ...
1
vote
1answer
609 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 ...
-1
votes
3answers
90 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
votes
0answers
578 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
vote
1answer
79 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 ...
12
votes
1answer
5k 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
votes
1answer
95 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 ...
0
votes
0answers
141 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 ...
0
votes
4answers
1k 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
votes
1answer
62 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 ...
0
votes
3answers
283 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.
...
8
votes
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
votes
1answer
131 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 ...
0
votes
2answers
8k 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
votes
4answers
7k 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 ...
0
votes
2answers
54 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
votes
1answer
186 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 ...
0
votes
0answers
78 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
votes
1answer
6k 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
votes
0answers
139 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.
...
-1
votes
1answer
79 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
votes
2answers
164 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
votes
2answers
304 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 ...
