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Feb 15, 2004 · If you can post your source and dsn file we'll have a look. Typically this happens when you externally wire a crystal etc. - this introduces an extremely high speed oscillator which bottlenecks the simulation and is completely superfluous anyway. Clock frequency is specified as a property of the microcontroller device.
Jun 12, 2004 · hspice speed up simulation Besides fast options, autostop can help you as well. In addition, increase step for transient, AC,DC will help when too small is not necessary. Of course employing multi-cpu and use multi-thread job can make simulation fast dramatically.
Mar 11, 2005 · 1,288. Activity points. 1,591. pic uart speed. You didn't study the datasheet well enough. Table 10-1 on page 97 gives you the formula for calculating bit rates. With BRGH set to 1 and running at 20MHz the maximum baudrate = 1250kbaud = 1.250Mbaud. This is also shown in table 10-4 on page 98.
Feb 1, 2007 · There has been apparently doubt how to calculate rotation speed for this motor. However, as the datasheet confirms, the formula is simply given by the 5 rpm@200 pps expression. Required step frequency is intended revolutions per minute multiply by 40 Hz, usual up to maximum of 5 rpm or 200 Hz, respectively a minimum step-to-step delay of 5 ms.
The wider the torque range the more difficult. The higher the RPM accuracy the more difficult. The faster the regulation speed the more difficult. The simplest solution is to use a PWM with a single transistor. (useful for 50% ...100% rated RPM to get CCM) The next better solution is to use a halfbridge solution.
Jul 20, 2012 · You always need the 2 metrics (Test Coverage for SA and TC for Transition faults). TF patterns detect slow-to-rise and slow-to-fall faults while SA pattern detect stuck and open faults. @speed fault testting require 1 launch and 1 captur cyclee to be tested. For @stuckat, 1 capture cycle is often sufficient to detect a fault (unless there are ...
This sounds as though you want to examine 5 seconds operation of a circuit running at 1 GHz. It's an example of mixing micro and macro events. It becomes mismatched and unwieldy in simulation. (It is not a problem with real electronics, of course.) Consider trying a longer timestep. Also try a slower switching rate in your simulated circuit.
Dec 28, 2011 · You need a high speed op amp with some current output capability (at least 100 mA). You also need to protect the varactor from inadvertent burn-out if forward biased. So there are two basic circuits: The single ended rail-to-rail op amp can not blow out the diode with a forward bias, so you can hook it up directly.
Jun 27, 2007 · If you want to meaure switching speed of a SPDT switch, you can use the R&S power sensor NRP-Z81 to capture the switching time. The smallest capture time can be 5ns. R&S have one PC power sensor software , the power sensor can connect with USB. Very easy to use. In the switching time measurement for SPDT, you can use function generator or ...
Jan 27, 2012 · My project is Using a Digilent BASYS FPGA board: Make a motor spin both directions. with variable speed that can be set with switches SW0 - SW7. The L298 Hbridge can be used. Care must be taken to protect the FPGA from excessive. current draw and large voltage transients.
