Hi everyone,
I watch this video, min 3:30 upward, and it says that the demodulation of AM is when the diode is in the reverse biased but then the current flows!!! isn’t tit the current stop flowing when the diode is reverse biased?
Crystal radio circuit analysis/diode demodulation (8-Analog...
Hello, I have a npn transitor configured as a switch 0v to 5v gpio pin with base resitor 2k and a 50k pull down resitor in a volatge divider configuration. I wanted to know if this pull down resitor will be okay with Ic current about 20-30ma or I need to decrease it more as the rule of thumb 10x...
Hello,
I have a two identical PCBs (one faulty and one non-faulty). The PCB has a buck converter (AOZ1212) to convert 24V to 4.5V. This converter uses a Schottky diode as flyback/freewheeling diode. When I was debugging the faulty board, this diode read 0.2V in forward bias, and 2.3V in reverse...
Hi everyone,
So, as I am reading this part of amazing book, the Celsius zero shift for two -terminal temperature sensor circuit of Fig 21.19 is not fully understood by me.
what I understood:
-The \[ V_{\text{Temp}} \] at the two terminal of the Zenner diode is directly coming from the circuit...
Consider the following circuit :
Working in power electronics, we considered the JFET as a voltage controlled resistance, our professor said this is the equivalent circuit :
Initially the transistor is blocked, thus the capacitor is charging, when v_c = v_E > v_A the JFET is conducting thus...
Hi Guys, I am quite confused why he compares the incertitude of momentum and position of particle in quantum mechanics to frequency and amplitude in signal and system:
for my understanding when I sample a signal over many cycles, i do obtain the amplitude and frequency of the signal. so, why he...
Helloo we have trouble replicating this circuit, from what I read before its missing a diode for C4 to discharge its signal, although I'm not sure what kind and where to place it
Let the following circuit, i want to find the voltage in the inductance:
We have V_1 = 10(30°) \iff I_x = \frac{V_1}{4 \Omega} = 2.5 (30°) A \\
We also have by KCL \frac{V_1 - V_2}{-2j \Omega} = \frac{V_2}{1j \Omega} + 2I_x \iff \frac{V_1}{-2j \Omega} - 2I_x = \frac{V_2}{1j \Omega} +...
So im trying to make a combinational lock in proteus. One of the issue i've come across is one of my button which is labelled "reset" output high even if its not press but when I connect a logic probe to the line, the cable becomes normal. The second issue is there is a sequence detector that...
Hello everyone!
Im trying to determine the best way to analyse this circuitry to extract the value of I_o
So what i think from my basic point of view is using KCL/KVL in each mesh which will be tedious but will do the job just fine i guess?, but im looking for a better optimal less-time...
### *Update: (I updated the description/Question for clarity)*
I am currently stuck trying to solve a seemingly simple resistive network. The voltages U1 and U2, aswell as Rr are known. The unknown components are the resistances R1, R2, R3.
The dotted resistances "Rr" can be added or removed as...
Hello,
I am stuck on an exercise for a while with the circuit as shown below:
We have:
\[ V_{DD}=3.3 V \\
V_{tn0}=0.65 V \\
\gamma=0.5 V^{1/2} \\
2\phi _{f}=0.6 V \\
V_{1}=2.85 V \]
The question is: What is the best approximation for V2 in steady state?
(a) 0 V
(b) 0.65 V
(c) 2.2 V
(d) 2.65 V...
can you please identify this IC because there is nothing written on it or you can suggest me a substitute with the same pinouts. This circuit board is used in 8 program flashing led lights adapters.
I am in the process of creating a reed switch module for door opening detection, and I am encountering a challenge. The reed switch available to me is a normally open switch, meaning that when the door is closed, the switch will be closed due to the presence of a magnet. As a result, the ESP...
I have recently simulated the circuit demonstrated in the provided video using Multisim. While the circuit appeared to function correctly in the video, the simulation results indicate that it is not working as intended. The output remains high irrespective of the switch state. The left switch is...
Hey guys, I am trying to diagnose what the issue is with my Kurzweil CUP2 digital Piano
The piano displays no sign of life besides a red on led.
LCD screen does not display anything
Buttons do not seem to do anything(there is a little red light above each button that indicates the "mode" it is...
Hey guys, I am relatively new to micro electronics, and am in desperate need of help!
I want to bypass the muting circuit in a electronic piano. This involves either activating the relay, or pulling it to ground (BA3-5 Relay, and the highlighted LS1 in the picture below).
Please could someone...