analog circuit

  1. H

    Noninverting Configuration With Hysteresis-Clarifications required

    Dear Team, I need some clarifications for a non-inverting comparator design. I am using TLV7031 from TI.The circuit configuration is given as shown. In the datasheet it is given as " When VIN is low, the output is also low. For the output to switch from low to high, VIN must rise to VIN1 ". This...
  2. E

    Trying to design an audio circuit with a carbon single button microphone so that I can output the audio into a PC

    So I recently purchased a 285W western electric transmitter as I'm trying to more or less make a microphone that can plug into a computer which uses a carbon button microphone from the early 20th century. I have little education in circuit design, though I know enough to know I probably made...
  3. H

    LM7171 Non Inverting Amp Output Glitching

    Dear Team, I am designing a clock distribution network using LM7171. This opamp is used in the non-inverting configuration with a gain of 2. My input clock frequency is 2.4Mhz, Amplitude is 3.6V.I can see glitching at the output. May I know where I went wrong?Please find the circuit diagram...
  4. Alex_Khan

    Schmitt trigger based NAND gate

    Hello Everyone, If someone can help me to understand how to calculate the hysteresis of the Schmitt trigger-based NAND gate? Which MOSFET's dimension decides the Vth_H and Vth_L? Thanks
  5. Alex_Khan

    How to deal with Process corner variations in analog circuit.

    Hello, I have designed an LPF demodulator. In a normal situation it's working fine, however when i carried out the Process corner simulation, the threshold voltage of MOSFET changes which is obvious, due to which MOSFET's operation region changes, ultimately change the output. My question is ...
  6. J

    Schottky Diode as overvoltage protection

    At work, they are using this structure to protect an analog pin on a micro-controller from overvoltage. I simulated the circuit and wired it up to test it (physically), but the output is linear in both (which I expected). One engineer at work assures me this works, and that once V5 = V6 + 0.6V...
  7. W

    Recursive implementation of combinational logic

    Hello Everyone! I'm trying to implement a recursive implementation of the following function **We are allowed to use also \[ Multiplexer(2^n : 1) \] gates. If anyone has any idea and wants to share it I'd be glad to hear :) Have a great day!
  8. M

    Need transistor circuit to control optical switches

    I am a digital designer so anything analog is out of my expertise. I need to control an optical 2x2 switch with the following truth table: The pulse is in the msec range and the driver current is about 200mA. I have an FPGA that can control the transistors but not sure how to arrange them...
  9. T

    I cannot understand why oscillations happens at gain less than 1?

    Hello Everyone, As I am reading the book of Op Amp for Everyone, chapter feedback theory. I come across this paragraph that I could not understand well: Stability is determined by the loop gain, and when Aβ = –1 = |1| ∠–180° instability or oscillation occurs. If the magnitude of the gain exceeds...
  10. S

    Attenuator Circuit for Headphone output -> Microphone input

    Hi, I have seen several different threads about this but they seem either unanswered, or the solutions have not worked for me.. My goal is the following: I would like to connect the headphone OUTPUT from my electric guitar amp to my PC microphone INPUT (both are 3.5mm 3 pole jacks). My...
  11. T

    High precision 1mAmp current source

    Hello, I am looking for a 1 mAmp DC current source circuit design with 0.02% precision to be used in a 5V power supply circuit board and a 3KOhms load. Any suggestion/direction would be helpfull. Thank you all.
  12. GastonJam

    Transistor as an amplifier

    I'm currently working on this circuit and I run upon this question which I'm not sure I understood it correctly : For starters I have these values below - UCE=5V R1=6.1kΩ R2=1.35kΩ RE=1kΩ R3=1.5kΩ V1=15V IC=2mA UBE=0.4V B=180 Given formula rBE≈40mV / IB First I calculated CE with the use...
  13. Y

    NEED HELP TO MY HOMEWORK

    I need help with these questions especially the third one is a bit hard to understand for me. You don't need to solve it. Just a little explanation
  14. J

    Type of this electronic Object / device

    Hi guys, Im fixing my communication board called : CENTRAL LIGHTSYS RP432M00000E and I found this device (see in the photo) is unattached /disconnected .. what type of this device? it sounds like capacitor but there's no symbol for if it's capacitor or whatever .. (there's nothing written on...
  15. zeus8Olympus

    Ultrasonic Rangefinder using Analog Components

    Hey, I'm new to electronics, and for one of my projects, I'm supposed to design an Ultrasonic Rangefinder using Analog components only! The components include the 555 timers, SN74HC chips (specifically the 4 bit counter), 7 segment display and etc. Most of the guides I have found online use an...
  16. T

    Could not understand why noise cancellation must be at (fs-fc) for -60dB

    I have the overview of signal with cut-off frequency fc that I want to sample using an ADC with sampling frequency of fs, I have seen that some of my colleagues wanted to dumb any noise at -60dB at frequency fs-fc as you see it in the picture. for my understanding of nyquist theorem, I need to...
  17. H

    Window Comparator_Pull_Up Resistor_Comparator with Push Pull Output

    Dear Team, Do we need to use pull up resistor when designing a Window comparator using a comparator IC with push pull output(like TLV1805 ). Regards HARI
  18. H

    Maximum input voltage a diode can handle

    Dear Team, May I know how to find the maximum input voltage a didode can handle.I checked many datasheets no info about this. Can I apply any voltage greater than it's forward voltage. Regards HARI
  19. S

    Sine wave generator with variable frequency (1Hz-500kHz)

    I thought at first to use a VCO, but I didn't found any that generates a sine wave with 500Khz. So I thought to use a microcontroller, like Atmel o Arduino, but it's really difficult to create a PWM greater than 4MHz. Do you know any other way to generate a sine wave?
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