For lower voltages, Schottky diodes are commonly used as the rectifier elements; they have the advantages of faster recovery times than silicon diodes ( allowing low-loss operation at higher frequencies ) and a lower voltage drop when conducting.
32.
In low voltage converters ( around 10 volts and less ), the voltage drop of a diode ( typically around 0.7 to 1 volt for a silicon diode at its rated current ) has an adverse effect on efficiency.
33.
The exciter output is rectified by a 3-phase bridge-connected group of silicon diodes which are natural air cooled and accommodated in a bank of nine cubicles located on a platform cantilevered from the side of the foundation block.
34.
Continuing with the symbols : V _ T is the thermal voltage ( kT / q, about 26 mV at normal temperatures ), and n is known as the diode ideality factor ( for silicon diodes n is approximately 1 to 2 ).
35.
Modern regulated supplies mostly use a transformer, silicon diode bridge recitfier, reservoir capacitor and voltage regulator IC . There are variations on this theme, such as supplies with multiple voltage lines, variable regulators, power control lines, discrete circuits and so on.
36.
For Cryogenic temperature measurement down to 30K, PT-100 sensor ( "'resistance temperature detectors "'( "'RTDs "') ) is used, and for lower than 30K it is required to use Silicon Diode for accuracy.
37.
In fact, some silicon diodes are used as temperature sensors; for example, the CY7 series from OMEGA has a forward voltage of 1.02V in liquid nitrogen ( 77K ), 0.54V at room temperature, and 0.29V at 100 �C.
38.
The available power for traction is-produced at 600 V AC, and is rectified to DC through two groups of 30 silicon diodes, and eventually supplies six nose suspended traction motors which drive the wheels via a pinion gear at a ratio of 59 : 18.
39.
The traction alternator usually incorporates integral silicon diode rectifiers to provide the traction motors with up to 1200 volts DC ( DC traction, which is used directly ) or the common inverter bus ( AC traction, which is first inverted from dc to three-phase ac ).
40.
The'Turbo RAT'pedal uses red LEDs for this purpose ( red LEDs have about a twice as high forward voltage as the original silicon diodes ), while the'You Dirty RAT'pedal uses 1N34A germanium diodes ( clipping at a lower forward voltage ).
