The phrase "are needed to switch" is correct and usable in written English.
It can be used when discussing requirements or necessities for changing from one state or condition to another.
Example: "Several components are needed to switch the system from manual to automatic operation."
Alternatives: "are required to change" or "are essential to transition".
In agriculture, specific subsidies or incentives are needed to switch to perennial species for raw materials and energy, which are more effective for climate change mitigation than intensive annual crops.
Conformational changes in the activation loop, which in many kinases are induced by phosphorylation, are needed to switch between the inactive and the active state of a kinase [25].
It was shown, for the seasonally carnivorous Greater Noctule bat (Nyctalus lasiopterus, Vespertilionidae), that only minor changes are needed to switch from insectivory to carnivory (inclusion of small vertebrates in the diet) [ 64, 65].
After the initial process which involves forming/SET, RESET or no particular operation method to start switching cycles, a certain operation method is needed to switch the device between ON-state and OFF-state.
As one example, about 10 volts is needed to switch the device on, whereas modern transistors operate at about 1 volt; in this respect, the nano vacuum tube isn't compatible with modern circuits.
The mathematical simulation showed that for the on→off situation a much lower concentration of the inducer was needed to switch off the system and decrease the probability of a given cell being in the 'HIGH' fraction.
It shows that extra processing time is needed to switch between reference systems.
When the FCHo protein was missing, the adaptor protein-2 complex remained in its closed shape, suggesting that the FCHo protein is needed to switch the complex from its closed to its open structure.
For r-HuEPO, the authors claimed that a 15-fold increase in the weekly dose of r-HuEPO was needed to switch from the TIW to the QW regimen in the animal model tested.
Hence sustained EcR activity is needed to throw the switch.
Materials with high spin polarization and Curie temperature (TC), but low saturation magnetization (MS) and Gilbert damping are needed to minimize the switching current and switching speed according to the Slonczewski Berger equation.
