Questions tagged [loading-effect]

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2answers
132 views

Stick-Slip Piezo Linear Stage Driver - Prevent the Load from Changing Driver Output?

I am currently trying to develop a circuit that generates ramp waveforms to control the motion of a piezo linear stage. Specifically, two waveforms need to be possible to output: a slow ~250us upward ...
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0answers
63 views

Fan speed slows down, the moment a new load is added

I am using a rectifier, and 4500uF capacitor to reduce the ripple. After connecting to the power source (60Hz, 120V), I was able to turn on the fan. The issue occurs when I turn the switch on to power ...
0
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1answer
64 views

Cascaded RC Bandpass filter loading problem?

So I calculated the Highpass stage output impedance to be 22kohm and the input impedance of the Lowpass stage is 430kohm when f=5khz, still in the output I am getting half of my supply voltage despite ...
1
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3answers
644 views

Loading effects of a signal source

I'm reading "The Art of Electronics" (3rd edition) by Paul Horowitz and Winfield Hill. In the 2nd chapter on BJT (page No. 79, section Emitter follower). The author says: ".. In general, the ...
3
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3answers
475 views

Capacitance Measurement With Oscilloscope

simulate this circuit – Schematic created using CircuitLab I'm trying to determine the capacitance of a sensor, but the oscilloscope's internal capacitance is loading the measurement too much. ...
1
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3answers
5k views

Converting PWM to analog voltage

I need to convert a PWM signal with varying duty cycle from the arduino to an analog voltage from 0-5V. I used a RC filter with a time period of 3.9ms. The PWM output has a period of 2ms. I ...
1
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1answer
381 views

Question regarding operation of a pulse generator circuit with 3 transistors (exercise 2.3 art of electronics)

The exercise 2.3 in 3rd ed. of Art of Electronics asks: what is the output voltage during the pulse? I've replicated the circuit diagram from the book below (in circuitlab.com). I'd be grateful if ...
2
votes
3answers
186 views

Audio - How does I/O impedance affect the device?

Last year I was experimenting with a design for an audio distortion to be used on line level musical instruments (+4dBu with Zout 100-600Ω by my findings) without the knowledge of impedance, its ...
2
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1answer
296 views

Can I “duplicate” a stereo signal to 5 channels? Are there any impedance issues?

A friend of mine has an old 5.1 audio system. The amplifier of the system has 5 cables as inputs to be connected to the audio source. My friend actually uses some cable splitters to send the stereo ...
-2
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1answer
1k views

Improving the linearity of a potentiometer after loading

I could not understand why is adding 'Rlin' in the second figure improves the linearity of the system? A little help pls!
-2
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2answers
3k views

Electrically loaded resistive Potentiometer!

According to my course book, Potentiometers produce a linear output as a function of displacement, provided that the potentiometer is not electrically loaded!, what is electrically loaded???, mean in ...
3
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2answers
285 views

What is the effect of heavy loads on the electrical grid?

When our neighbors turns on a motor, a bulb in our home turns off for a very very short time and then it turns on again. It is something like a quick flash but a man eye can notice it. Would you tell ...