Carl‭

According to Signal processing and linear systems by Lathi, the transfer function $H(j\omega)$ does not exist for systems with poles in the RHP: - This makes sense to me, since $H(j\omega) = \fr...

3 answers  ·  posted 3y ago by Carl‭  ·  edited 1y ago by Lorenzo Donati‭

Homework problem A MOSFET has a power dissipation of $P_{d} = 10\text{W}$. The MOSFET is mounted on a heatsink. There is an isolation pad between the MOSFET case and the heatsink. We are given t...

1 answer  ·  posted 3y ago by Carl‭  ·  edited 1y ago by Lorenzo Donati‭

I am using the AD620 as instrumentation amplifier to amplify the body's ECG signal. An ECG is a differential signal (measured with two electrodes) and I want a differential gain of Gd=1000 . The ...

3 answers  ·  posted 2y ago by Carl‭  ·  last activity 2y ago by TonyStewart‭

I am an electrical engineering student and I just finished designing an ECG-amplifier circuit. Here is the schematic: - It is fairly simple. Initially, there is a 1st order highpass filter. Then...

1 answer  ·  posted 2y ago by Carl‭  ·  last activity 2y ago by Olin Lathrop‭

I have the following problem: - Using Wikipedia I find that during CCM we have the relation: - $$\frac{V_{out}}{V_{in}} = -\frac{D}{1-D} $$Solving for $D$ and inserting values gives me $$D...

2 answers  ·  posted 3y ago by Carl‭  ·  edited 1y ago by Lorenzo Donati‭

What does it mean for signals to have impedance? To me, impedance is kinda like an "extended resistance" that also includes phase shift $$Z = R + jX $$It makes sense to me that components like cap...

3 answers  ·  posted 2y ago by Carl‭  ·  last activity 2y ago by TonyStewart‭

When recording an ECG signal, the raw signal is taken from the body and sent into an ECG amplifier to amplify the signal to a suitable range and remove common mode and other types of noise. Measur...

1 answer  ·  posted 2y ago by Carl‭  ·  edited 1y ago by Lorenzo Donati‭

This problem investigates the behavior of the voltage across the capacitor in response to a step input: - I am asked to find the voltage Vc(t) without the use of differential equations or simula...

2 answers  ·  posted 7mo ago by Carl‭  ·  last activity 7mo ago by Olin Lathrop‭

I'm designing a PCB to filter and amplify a differential body signal with amplitude 5 mV up to 5 V. The first part of the circuit consists of a first order highpass filter to remove any DC componen...

2 answers  ·  posted 2mo ago by Carl‭  ·  last activity 2mo ago by TonyStewart‭

I think this site needs to get an aesthetic make-over in order to make users coming back. This may be because I'm accustomed to StackExchange's appearance but to be honest, this site is ugly and u...

posted 3y ago by Carl‭  ·  edited 3y ago by Carl‭