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What is an example of a high resistant low current appliance

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SOURCE: Can anyone tell me what these engine fault codes

most common is o2 sensor

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Charge overnight and the charge runs out without ever being used??

If the battery is good
You have a parisitic draw somewhere:

Switch your Digital Multimeter to DC AMPs. Amps is usually indicated by an "A" on the Multimeter Switch. AC is usually shown as a "~" symbol and DC shown as a "-" symbol. You usually have to move the Multimeter positive lead to a separate socket on the Multimeter. Sometimes there are 2 sockets, a high range and a low range. Always test on the highest setting first. For example: high setting on your multimeter may be 10 Amp. Test on the 10 Amp setting first, then if the current drawn is less than your Multimeter Low setting, move to that setting and keep testing. In my example my Multimeter low setting is 0.3 Amps. Also indicated as 300mA (mA x 1000 = A).

WARNING! Once the multimeter is on Amps do not connect it directly across the battery and do not hit the starter button while testing for current Amps. This will cause the internal fuse in the multimeter to blow! A multimeter set on current is a very low resistance, almost a short circuit and will draw as much current as your battery will supply till something melts. Always plug the Multimeter leads back to volts when you have finished testing to avoid blowing the fuse next time you use your multimeter.

Voltage ReadingTo test for battery drain: Switch everything off on the car. Disconnect just one battery lead. For example disconnect the Positive Battery Lead. Set your Multimeter to Amps as described above. Connect the Positive Multimeter Lead to the Battery Positive terminal. Make sure the Positive Lead you removed from the battery does not touch anything grounded, like the car frame etc…. Connect the Negative Lead from the Multimeter to the Positive Lead you removed from the Battery. You should now see current drain measured in Amps. Move to the lower Amp setting on your multimeter if the current is lower than the setting on the Multimeter Low setting. Start to unplug the wires or fuses around your car and see if the current reading goes to zero. This will point you in the direction of the current thief. You can convert to Power measured in Watts by multiplying it by the Battery Voltage. Power = Volts x Amps 4.2Watts or (12Volts x 0.35Amps).

Mar 24, 2017 | Cars & Trucks

1 Answer

What is a thermistor

A thermistor is a component whose
resistance changes when its temperature changes.
A thermistor is a special type of resistor whose
resistance decreases as its temperature increases.

A plot of resistance against temperature for
a thermistor is shown above. The plot is unusual
because it shows that a bigger current will flow
at a higher temperature. For most components, the
resistance increases as the temperature increases
and a smaller current flows at a higher temperature.
What is a Thermistor used for?
A thermistor can be used in a circuit to detect a
temperature change. For example, a thermistor may
be used to keep a freezer at the right temperature.
A circuit with a thermistor in it can switch the freezer on if the temperature gets too high and switch the freezer
off again when the correct low temperature is reached.
A thermistor can also be used to trigger a fire alarm. Thermistor are used in all Temperature controlled device and Motors to cut off
circuit when temperature rises over a certain limit to cut off power or trigger another circuit.

Mar 22, 2015 | Dryers

1 Answer

2006 mitsubishi endeaver ECU goes out withing 500 miles of being replaced. has had 8 ECUs in 4 years and no high beam head lights when it goes out. What is cause?

when lights go dull it means either a bad earth / high resistance to current flow or the current for the lights is being diverted before it gets to the lights . What I mean is that there would be 12 volts at the power wire to the lights and very low voltage at the earth wire from the lights as the resistance of the bulb elements reduce the current flow . Now if there is a place that is draining off the 12 volts before it gets to the bulbs say to 7 volts then there is less current available to properly work the lights and they will be dull. A bad earth will effectively add extra lights into the circuit and increase the current flow as it is like hooking lights up in series(P ve to N-ve to pve to neg to pso to nev and so on instaed of adding lights in parallel ( all pve on one terminal and all Nve on the other . If you keep having troubles with the unit burning out then check the earth points and if you are running extra lights or lights with higher current draw ( example 65 watt bulbs to 125 watt bulbs ) with out running a relay in the circuit will cause problems as the unit is not designed for that sort of current draw.. The units will be good to start with but the killer will be too high a current draw through it from some of the faults I have outlined . BY using a multimeter and an amp meter in the circuits you may find the faulty bit

Mar 21, 2014 | Mitsubishi Endeavor Cars & Trucks

1 Answer

Blowing cold air

Unplug the unit. Using a ohm meter you need to check of the heating element is good or not. Reading across it you should see very low resistance. If you don't it may be "open" or a thermal interrupt has stuck open preventing current flowing through it. Check your high and low limit switches (sensors) for closed circuit (low resistance). If one reads high or open that one needs to be replaced.

Feb 27, 2014 | EuroTech EDV158 Electric Dryer

1 Answer

1992 chevy C1500: Heat works on low speed, no medium, and high only works intermittantly.

On any other vehicle it sounds like the blower fan switch.
The fan switch provides power or ground to the resistor and there would be a high speed blower relay to bypass the resistor.
But in your case the fan switch is part of the controller.
I don't have a diagram for a 92 but the 94 model shows relays for low medium and high speeds. Each relay gets power from a fuseable link. The high relay gets power thru the low relay if the low relay is not engaged.
If you have the model with 3 relays you may need to check them.

Feb 01, 2013 | 1992 Chevrolet C1500

1 Answer

G16b no spark efi

The fuel pump relay has four pins. Two pins relate to low power switch circuit from the ECU and the other pins relate to the high current switched circuit which has a permanent power in and switched power out (to fuel pump). Check that the ground on the lower switch circuit pins is good and then check that when the ignition key is in the 'on' position that the low power switch pin has 12.6ish volts supplied to it. If there is no low power switching supply then the relay cannot function. If there is low power supply but no voltage switch on the output then the issue sounds like the relay itself. Pull the relay out and check that it clicks when 12v is dropped across the low circuit pins. Check the resistance across the high current output circuit pins when the low pins are given 12 volts. As 12 volts is applied across the low voltage pins the resistance across the high current output pins should drop to near zero as the internal contacts are closed. As the low side voltage is removed the high side pin resistance should once again register open circuit (infinite resistance). If the relay clicks but fails to output then either replace the relay or open it up and get a nail file and draw it between the contact pins to remove any corrosion.

May 23, 2012 | Cars & Trucks

1 Answer

Give me 5 problem about resistance

1. Civilian European citizens that sabotaged the occupying German armies (by changing street-signs) and who assisted Allied soldiers to smuggle them to Great Britain were "The Resistance".
2. Ohm's law: To make a current flow through a resistance there must be a voltage across that resistance. Ohm's Law shows the relationship between the voltage (V), current (I) and resistance (R), namely V = I times R.
3. Trying to walk into a cinema while the viewers of the previous showing of the feature are trying to vacate the facility is an example of resistance.
4. Any two-year-old child that says "no" to everything is an example of resistance.
5. A lady who overindulged in Christmas feasting, and now is trying to put on her "skinny-jeans" is the best example of resistance.

Jan 10, 2011 | Computers & Internet

1 Answer

Getting Power everywhere is not cord. I have

Try reading the resistance on the coil itself. If your coil is damaged and has a high resistance the voltage will still read 120 volts, becuase there is no current. The voltage drop across the coil is equal to the resistance of the coil times the current. V = I * R. "I" being current. If the resistance of the coil is high because it is broken then the voltage will still read 120V. Another way is to read the current through the coil.

If it is a 1500W fryer then the current through the coil is about 12 amps. 1500/120= 12.5. To calculate the resistance of the coil you would you take the voltage divided by the current. 120/12.5 = 9.6 ohms.

Therefore the resistance of the coil should be very low. It will actually be lower when it is not hot. So your ohmeter should read somewhere between 5 and 15 ohms.

Bob Janelli

Oct 01, 2009 | Kitchen Appliances - Others

1 Answer

Half way throu my dishwashers cycle it fuses & turns everything in house off

this happens due to the high electric current requirement of the dishwasher and it is not receiving that required current so it try to start but due to lack of required power it shuts off the current in whole house.
get the electric curren line checked out in your house.

and to check the current in your dishwasher check out this instructions
You will most commonly measure two electrical parameters when you're troubleshooting your appliance: resistance (measured on units called "ohms") and voltage. Typically, both of these measurements are made on a single meter called a multi-meter, which you can set to measure either ohms or voltage.
This shows how to measure resistance. Resistance ( or continuity ) is measured in units called "ohms." You'll commonly want to know the resistance of things like bake elements and solenoid coils. For example, a good bake element typically has a resistance of about 30 ohms. If your oven's not baking and you measure the resistance of the bake element and the meter doesn't move, then you know you have a bad element. A simple ohm measurement can save a lot of money and a possible headache :)

Amp meter: Here's a clamp-on amp meter (or amp meter) being used to measure current flow through a wire. This is a common test for determining whether or not a gas oven igniter is good or bad--only way to really know is by measuring its current draw and comparing to rated draw. You'll also want to measure current/amp draw in cases where you have an electric motor that runs for a few minutes then shuts off on it's built in safety to see if the problem is with the motor drawing excessive current.
Volt meter: This picture shows how to measure voltage. A voltage measurement at the outlet should the first thing you do whenever you have an appliance that is completely inoperative...a simple power test is required if your electric dryer is running with no heat to make sure you have both powers at the dryer


Oct 16, 2008 | Dishwashers

1 Answer

Charokee charging problem

I'm not sure whether the high or low side of the field is controlled; typically, it is the low side with 12V applied to the field and the low side controlled by a a transistor in the ECU. If you are measuring 12V at a field terminal, it may be normal and when I have monitored this voltage on the controlled side, it was always lower than 12. I can't give you a range because ot the variation of load on the output.
If you measure the resistance of the field winding, you can get a rough idea of the current it draws. For example; measuring 100ω would yield a max current of ~120mA. ( I=E/R)
I have something in mind about 200ω but that seems too high but it should be in the range of ~100 - 200ω. 

Sep 08, 2008 | 1993 Jeep Cherokee Country

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