Tag Info

1 vote

How to reduce gain margin to finite value?

I would prefer to call the gain margin in that plot "undefined" rather than "infinite". When gain is measured as Vout/Vin the gain margin is defined as the factor by which you have ...
• 496

How to reduce gain margin to finite value?

The infinite gain margin becomes obvious by looking at the bode plots. The phase of the system lies between 0° and -90°, therefore the 'critical' phase of +/-180° is never reached. Speaking in terms ...

piezo ultrasonic atomizer control and monitor quantitatively

You can make it pulsating but the only sure way I know of to vary the drop size would be to drive different elements. They operate at mechanical resonant frequency and that frequency determines the ...
• 383k

I don't understand this temperature controller circuit's behaviour

This is a fundamental issue. You need to prevent the output from going so close to ground that the difference between the inputs becomes less than the offset voltage of the op-amp, if it's driving the ...
• 383k

How to vary output current by maintaining constant output voltage?

Not unless you can change the valve's impedance as well. From Ohm's Law we have Z = E / I, if voltage E is constant and current I changes then impedance Z must also change. Edit: Now that you've added ...
• 19.5k
1 vote

BLDC Hall Sensor Angle Offset

Looking at your oscilloscope waveforms, it looks to me the Hall sensors are not placed at equal intervals in your motor. The reason you don't see that effect at lower RPM is that the timer count ...
• 11
1 vote

Why doesn't the LED shut off?

For the NE5532, many reasons. The input voltage range does not go very near the negative supply. So as your negative supply is the 0V ground, valid input range is upwards from 2 or 3 volts. So in any ...
• 137k
1 vote
Accepted

Why doesn't the LED shut off?

The opamp may have a large enough offset voltage so it requires the input voltage to be slightly negative to completely shutoff the LED. It will vary between opamps. It can be avoided by intentionally ...
• 32.6k
1 vote
Accepted

Understanding Signals, LTIs and Electrical Circuits

All electrical circuits made from LTI components are LTI systems. This is handy, as many components like fixed resistors, capacitors, inductors are, or are approximately, linear and time invariant. ...
• 162k
1 vote

Control manipulator mechanical arm by infrared

You have no problem to solve. The relay contacts do not generate 230V, so if you do not send 230V into relay then it does not come out to your device either. The relay can be used for anything, as ...
• 137k

Top 50 recent answers are included