Individual steel drums can be heated by mains frequency induction heating.

For instance the mercury lighting used in stadiums (twice the mains frequency).

This part of the system is used to take the mains frequency and increase it to anywhere between 1 and 400 kHz.

Essentially the Pegasus used the mains frequency to trigger vertical sync.

If the picture was locked to the mains frequency, this interference would at least be static on the screen and thus relatively unnoticeable.

In the late 1980s the company introduced the concept of using a higher than mains frequency in an X-Ray power supply.

With this it can supply the computer with power of accurate mains frequency and voltage for several minutes as the wheel slows down.

Instability of the mains frequency.

Electricity transmission in Japan is unusual because the country is divided for historical reasons into two regions each running at a different mains frequency.

Often referred to as a bearing heater, the mains frequency unit employs standard transformer principles for its operation.

Conversion kits are available which will work in existing fittings containing switch start, mains frequency fluorescent lamp ballasts.

Mains frequency units using magnetic cores (iron)

It is also important even at mains frequencies (50 - 60 Hz) in AC electrical power transmission and distribution systems.

Viewing these markings in artificial light at mains frequency produces a stroboscopic effect, which can be used to verify proper rotational speed.

Modern electronic ballasts usually change the frequency of the power from a standard mains frequency of 50 or 60 Hz.

The inductive reactance of the line trap presents a high reactance to high-frequency signals but a low to mains frequency.

Powdered iron cores are used in circuits such as switch-mode power supplies that operate above mains frequencies and up to a few tens of kilohertz.

Size and weight of the device was largely determined by the transformer, which in turn was determined by the power output and mains frequency.

For operation in Germany, the vertical frequency was changed to the European mains frequency standard of 50 Hz to avoid power line wiggles.

The most important technical problem is that quite often the lighting of the scene is achieved with lamps which flicker at a rate related to the local mains frequency.

It is interconnected a single phase-locked 50 Hz mains frequency electricity grid that supplies over 400 million customers in 24 countries, including most of the European Union.

For HMI lamps, flicker can be avoided by the use of electronic ballasts that cycle at frequencies thousands of times faster than the mains frequency.

Ferrite transformers are not used as power transformers at mains frequency since laminated iron cores cost less than an equivalent ferrite core.

In those cases where operational complexities negate the use of a cored mains frequency approach, the standard RF or MF induction heater can be used.

The trade against being the least expensive is that pure transformer designs are often bulky and massive because they operate at the utility mains frequency of 50 or 60 Hz.