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static tells the C Compiler that the variable will have lifespan throughout, until the program ends.
extern tells the C Compiler that the variable or function is defined in another source file.
You can refer to old circuit books on TTL.
I remember there is a chart showing the overshoots, undershoots, ringing effects, RC charging and discharging time constants etc, when used with different resistors.
I recall that 4k7 to 10k gives good pull on the line, so it gets well above threshold...
Check IC datasheet. It has reference application circuit that shows if this pin should be pulled high or low, and the pull resistor values.
Usually 10k resistor is used for 5V devices, and 4k7 for 3.3V and 2.5V devices.
In this way, you do not need to calculate any value.
For the diode leading to the 450 Ohm load, you may want to consider a Schottky diode. If you are using 1A, perhaps go for 1.5A or 2A rating.
For the diode leading to a shunt capacitor, is it a recommended to use in the reference design of the switch?
Which is your load in your circuit? Is it the 450 Ohm?
It would be good if you label the ratings for the components used to ease troubleshooting.
Could you scale down your design to 10V, so you reduce the risk of damaging those devices?
In this way, you can also gradually step up your voltage...
OK, as you mentioned, joining training institutes like Sandeepani or Maven is a viable option.
As I am not sure of how employable are the people who were trained at these institutes, I suggest you find out whether the end result are what you really wanted.
In other words, did these people who...
To lower current to a motor, use a power BJT transistor in series placed between the current source and the motor.
Use a low-pass filter and a PWM signal from a microcontroller to vary the gate voltage into the power BJT transistor. In turn this will vary the emitter current to the motor.
Between the 12V battery and the motor, you can use a series transistor (sometimes known as pass transistor) such as IGBT, preferably that can handle rating 2A or higher.
Vary the IGBT gate voltage by passing PWM signal (from a microcontroller) into a low-pass filter (to get equivalent DC...
I think your circuit "sees" a large load presented by the motor, which requires a larger torque than you think. Then you will need to drive a larger current to start the fan.
One thing you need to take note. Dealing with such load, you will need to provide sufficient OFF time of any current...
Why don't you use a battery charging IC from Microchip, TI, Linear Technology or STMicroelectronics instead?
DC-DC converter is intended for load regulation and battery charging IC is usually placed on the same regulated supply rail in parallel to the load. In some battery charging IC, the load...
Yes, I do agree that we are on the same track. :grin: Cheers!
I guess that's because my interpretation is to relate frequency (or wavelength, inversely) to antenna length.
Well it is inevitably that longer antenna has the tendency that require a larger equipment or even a structure!
However it...
Not sure where you learnt that, but certainly that's incorrect.
Guys in this forum thread also agree that higher the frequency, shorter the length.
https://www.edaboard.com/threads/146664/
Modulating Frequency of 30kHz is also the Carrier Frequency. When we talk about CHANNEL, we call it Carrier Frequency. When we talk about TECHNIQUE, we call it Modulating Frequency. There is another term for Modulating called UPCONVERT (in some books).
Voice bandwidth is 330Hz to 3.3kHz. For...
xeratule,
1. Is this transformer built to operate in your intended frequency?
2. Is it possible for you to make an electrical model and simulate this? I am thinking you may have to look at the problem from Control Engineering persepctive to tackle oscillations.
3. Did the IGBT datasheet...
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