Observers from Earth can see two types of eclipses â eclipses of the Sun (solar eclipses), and eclipses of the Moon (lunar eclipses). These occur when the Sun, Earth and Moon align in a straight or almost straight configuration.
The Tehran Research Reactor (TRR) is a 5 megawatt-thermal (MWth) pool-type light water research reactor. The United States supplied the TRR to Iran in 1967 and weapon-grade uranium fuel for the reactor.The International Atomic Energy Agency (IAEA) inspects this reactor.ithout notifying the IAEA Iran irradiated uranium oxide (UO2) targets in the TRR and separated plutonium in glove boxes at Tehran Nuclear Research Center (TNRC) laboratories. Iran also admitted to producing small amounts of polonium-210 in the TRR in the early 1990s through the irradiation of bismuth targets.
The physics of the SBR technology (see apps notes, Reverse Recovery Time (TRR) in Super Barrier Rectifier) lends itself to have these switching characteristics and makes the SBR perfectly suited for todayâs applications.February 2006, Rev 1.0 Page 6 of 7.he former standard measurement of T RR is to take the sum of t a and t b, as shown in Figure 2. February 2006, Rev 1.0 Page 1 of 7. AN-1012 Reverse Recovery Time (T RR) of the SBR Application Note Figure 2. Standard TRR For SBR devices, such method cannot be used because of the soft recovery characteristics.