# Tagged Questions

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### RC vs RL circuit (transient behavior)

I have noticed that in PCB design, usually placing Capacitors next to the IC's on the power lane, are more favorable than placing Inductors. I was given different resoaning that why RC is more ...
124 views

### Maximum limit on the Buck converter inductance value

I found min inductor required for Buck converter using this formula, We usually take 40% buffer on the calculated minimum inductance value(so, that inductance at rated current will not vary much and ...
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### Regarding Transient response of a Buck converter(Quantitative analysis…)

I want to know transient response of a Buck converter. I have seen in so many occasions, like when calculating Output capacitance, datasheets consider, say in a transient event, loop will be ...
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### Spice definition of resistor/capacitor

I am trying to understand a Spice definition of a circuit and transient analysis on it. I have kind of "inherited" this and can't ask the original creator; my Spice memories from university are pretty ...
129 views

### How does a zero in transfer function affect the bandwidth of a system

Suppose we have a system with the closed-loop gain: $\displaystyle G(s) = \frac{\omega_n^2}{s^2 + 2\zeta\omega_n+\omega_n^2}$ Which is the default two-pole system closed-loop gain. Let's also ...
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### What does a High Time Constant for RC circuit mean

It's a simple RC Series circuit, with voltage being measured across the Capacitor. Input voltage is of pulse type with the following Parameters V_on=5V V_off=0V Pulse Duration=20 ms(On Time) Time ...
130 views

### Buck regulator frequency requirements (transient response)

Looking at the frequency choices for buck regulators, is there a defined "good" range for a particular context? Looking at datasheets, manufacturers extoll the virtues of "better transient response". ...
177 views

### Help tame turn-on transient

I'm working on a dual headphone amplifier. I've discovered that it has a pretty bad turn-on transient that results in a loud pop if headphones are plugged into the amplifier when it is turned on. ...
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### What Does 8 x 20-µs and 10 x 1000-µs Mean in Surge Testing Terminology

I'm trying to understand the meaning of 8 x 20-µs and 10 x 1000-µs standardized transient impulses (or sometimes it's called a waveform). But what does it actually mean. Why is there a ...
134 views

### Handling Transient Currents on USB Powered Devices

I'm working on a USB-powered speaker design and could use some thoughts or design inputs from the community. The data part is pretty simple - USB powers an I2S bridge that talks to an I2S amplifer. ...
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### Measuring a high dynamic range current decay with different amplifier gains

I would like to see a current decay from a photodiode with a high dynamic range. By saying "high dynamic range", I mean it decayed from about 1uA down to 100pA or 10pA. I tried with a linear ...
336 views

### How to solve a transient circuit

Given this circuit considering that before the switch closes the network is in a steady state. What steps should one follow to trace $V_{L1}$ before and after the closing of the circuit ? As far ...
212 views

### how many caps required for 3.3V rail for 500ma?

How much capacitance do I need on 3.3V rail with loading of ~500mA? I have 22uF caps that I can use. In general, what is a good rule of thumb on how much capacitance required based on a voltage rail ...
452 views

### About SPICE: Should I use transient analysis or DC linear analysis?

My question is specifically linked to an exam problem where I had to find a function in terms of time for the current on a capacitor and a resistor. The circuit was very simple: A current time-variant ...
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### Transients and shielding in power transmission/distribution lines?

I've been lurking for some time on the board here - but hadn't had occasion to ask a question until now: Does anyone have experience with power distribution networks and their impacts on sensitive ...