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15 de fev. de 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.
12 de jun. de 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.
3 de nov. de 2018 · Assuming typical speed in FR4 is 15 cm / ns (0.015 cm / ps), I am trying to calculate the time to travel 400 mil (1.016 cm). I am not sure if the following calculation is correct. Speed = Distance x Time. Time = Speed / Distance. Time = 0.015 / 1.016 = 0.0148 ps.
20 de mar. de 2024 · 300,821. If "DC fan motor" is a usual electronically commutated brushless DC type, consider that it may be not suited for direct PWM operation. They usually involve a larger input filter capacitor, you'll need an external filter choke. Better use a fan motor with built-in speed control and separate pwm input that can be driven by logic level ...
28 de dez. de 2011 · 37,988. 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.
9 de nov. de 2012 · With duty cycle of 60% (0.6), you get 60% power. With duty cycle of 100% (1), you get full power. So, this provides an efficient way of controlling the power to a load. So, if power to a motor is controlled like this, the motor's speed can be controlled. So, to control the speed of the DC motor, I have used PWM.
31 de jan. de 2024 · I won't give the exact speed because it is a function of the load capacity and even though I have a 16-bit LRC it may not be easy to measure accurately. Let me put it this way, if I compare the slope of the rising edge of the STM32F3 and the output of the 74HC04 at 3.3V, they are similar, with a 5.5V supply (74HC), the slope of the 74 is already a bit steeper.Compared purely optically on the ...
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.
6 de abr. de 2005 · 1,355. proportional with sm6135. Normally, for RC control car once you press a trigger to make the car go forward, the trigger causes a pair of electrical contacts to touch, completing a circuit connected to a specific pin of an integrated circuit (IC). The completed circuit causes the transmitter to transmit a set sequence of electrical pulses ...
7 de abr. de 2010 · 1. Trophy points. 1,288. Activity points. 1,630. Hi, I just tried simulating speed control of BLDC motor in proteus. I followed AVR443 application noted and designed the driver circuit and altered the code for atmega640. But when I connect the PWM channels of the micorcontroller to the lower side gate switches the speed is not controlled.
