SILICON CONTROLLED RECTIFIER, A SOLID STATE SWITCH OFTEN USED AS THE OUTPUT POWER SWITCHING DEVICE FOR A TEMPERATURE CONTROLLER INSTEAD OF A MECHANICAL RELAY MORE RECENTLY CALLED SSR, SOLID STATE RELAY OR TRIAC
A silicon device with four layers (PNPN) having an input control terminal (gate), an output terminal (anode) and a terminal common to both input and output (cathode) It generally operates as an AC switch for lighting and heating control
Sustainable Cell Rate: The SCR is an upper bound on the conforming average rate of an ATM connection over time scales which are long relative to those for which the PCR is defined Enforcement of this bound by the UPC could allow the network to allocate sufficient resources, but less than those based on the PCR, and still ensure that the performance objectives (e g , for Cell Loss Ratio) can be achieved
(selective catalytic reduction) is a emission reduction technology for NO which converts nitrogen oxides in a catalyst with NH3 addition into N2 and water
(Semiconductor, or silicon controlled rectifier) An electronic DC switch which can be triggered into conduction by a pulse to a gate electrode, but can only be cut off by reducing the main current below a predetermined level (usually zero)
The oldest award for formation skydiving achievement, for those who have been in a star of at least eight people in which each person left the aircraft separately and flew to the formation