You don't mention what device, but the answer is probably NO. 50hz and 60hz signals will act differently in reactive components such as Transformers, coils, capacitors, etc.
Paulev is correct that it would act differently on inductive/reactive devices, especially transformers. The device to be discussed here is the transformer as it is most present in all electronic equipment. Based on theories, a 50Hz transformer will perfectly work on a 60Hz Power system but not vice versa. Assuming the transformer's specs are, P=1kVA, L=1H, R~0 ohm. At 50Hz the impedance will be Z=sqrt(Inductive Reactance=2 x Pi x 50 x L), thus the ampacity (Ip=sqrt(P/Z)) of the magnetic wire at the primary is 1.79A.
Using the same steps at 60Hz. The current drawn by the the transformer will be 1.63A which is within the ampacity of the magnetic wire. therefore a 50Hz appliance can be used on a 60Hz supply without any problem.
For safety reasons, this is not recommended. Many 60 Hz electronic devices can overheat causing the risk of fire by running them on 50 Hz power sources. Additionally, the output of the device can be affected by lower than rated Hz input. This could cause damage to other devices that are attached to it (e.g. battery chargers). Always refer to the operators manual for the primary voltage/Hz requirements. Contact the manufacturer if you wish to operate the device outside of their published requirements.
Yes, 115V 60Hz will work in a 120V 60Hz power supply.
You can get a transformer that converts the UK's 230V power to 120V, but you cannot get a transformer that will convert from 50Hz to 60Hz. Often, US equipment can work, except that they will work hotter and less efficiently on the 50Hz power. Consult your clipper and trimmer documentation - you may find that it will work just fine on 50Hz.
What effect will be there on the motor (Induction) output power when a 100kW 50hz motor is connected to a 60hz power supply.
The motor will run, probably at nearly the same speed, but it cannot supply the same mechanical load. If it can be run on a lighter load, proportional to the voltage, it should be OK.
120
Your stereo system has an internal transformer in the power supply that is designed to operate at a given frequency. If it is designed to operate at the load your stereo system will use at 50 Hz, then yes. Otherwise this transformer will overheat when connected at the wrong frequency, and will burn out. You might be lucky and the power supply may be labelled to operate at 50 or 60Hz; if not, I recommend contacting the manufacturer. A voltage transformer will convert 50Hz 220 to 50Hz 110. To change frequency, you need special equipment.
The power supply for the Sunpentown WA-1340DH Portable Air Conditioner/Heater Combo is 115V / 60Hz.
Input would be 120v at 60hz. Standard US wall power.
Same as the American standard, 110/120V at 60Hz. A Google search for "International Mains Voltages" will provide lists of the voltages and frequencies in many countries.
In North America, Japan and some of northern South America, standard power supply is within 10% of 120V at 60Hz in Europe, Australia, most of South America, Africa and Asia, and New Zealand it's 230V at 50 Hz.
It is 120V/60Hz
You need amps
No
No this will not work you will draw approx. 2.291 amps@275w that is approx.2291 mA
Household is 120/240 volts at 60Hz. The average wall socket is 120v 60Hz.
nothing
Check the wattage of the device that plugs into the adapter. If the device's wattage is lower that 25 watts then the answer is yes. If the device's wattage is higher that 25 watts then the answer is no.
Not unless the appliance is rated to be used with the two different power supplies. The US uses 120v, 60 Hz if it plugs into a receptacle, and possibly 240v, 60Hz if it is hard wired. The UK uses 240v, 50Hz whether it plugs in or is hard wired. These two power systems are NOT compatible. You may use a US appliance in the UK, and vice versa, only if the appliance is dual rated, i.e. the appliance says 120v/60Hz AND 240v/50Hz on the nameplate. If the appliance only specifies one power supply, it can only be used on that power supply. If this is the case, you may be able to use a travel adapter to operate the appliance.