optical circuit switching

In recent years, network operators have been heavily dependent on ROADM-based optical transmission equipment, using a fixed point-to-point WDN connection, using 10g wavelength in the entire metropolitan area network and wide area network convergence and transmission client services. If these networks are well planned, the existing spectra can be used reasonably and effectively. Typically, a tran0000der transceiver is used to map Client Services with a

transmission bandwidth can be up to several GHz, cheap, vibration resistance, radiation, large diameter easy to connect, good flexibility of organic fiber is the ideal medium for short distance information high-speed access. The realization of all-optical switching system based on organic fiber is a good way to solve the problem of short range broadband optical

to flow out. If all these factors are taken into account, the time required for the energy storage filter capacitor to fully power is several times larger than the above calculation result.In addition, the duty cycle of the anti-exciting switching power supply is constantly changed according to the output voltage. When designing the switch power supply circuit, you must note that when the switch power supp

Purpose:When many single-battery machines are under heavy loads, for example, if the backlights are switched to the brightest light and 3D games are run, pulling DC power is prone to machine crashes or blurred screens; Cause:Q5's conduction time is not enough. It is expected to speed up to the conduction time through the fast discharge of G pole; Circuit before modification: (Switch when the battery voltage is 3.65v, yellow indicates VB, G

Source: Battery and Adapter switching Circuit improvement experimentObjective: Many single-cell machines in the case of large load, such as the backlight on the brightest, running 3D games, at this time to unplug DC power is prone to machine crashes, or flower screen phenomenon;Reason: Q5 time is not enough, hope that through the rapid discharge of G-pole, speed to the on-time;Before modifying the

If the company decides to deploy an optical fiber channel storage area network (SAN), then it should determine the supplier of the switch, because it is unwise to mix different brands. Fiber Channel switches need to communicate and cooperate with each other to manage the entire network. To ensure that the switches communicate well with each other, the best way is to select one of the three top switch suppliers and then choose its products: brocade, Ci

Recently I have read several posts about power switching, so I will share with you the power switching circuit used in one of my projects. Thank you.Features:1. Supports touch switch and self-locking Switch2. Support automatic power-on of external power supply (which can be achieved by welding d17)3. Support for standby power output4. The external power supply an