All Questions

Question 1

I build a simple LED chaser that will be powered from a 9 volt battery and will start with a simple slide switch. I have simulated the design in TinkerCAD and it worked the way I wanted. However when ...

Question 2

I see multiple internal diagrams for the 555 timer IC. If I consider the following schematic, is the text below correct? (Also is this the correct diagram for the IC?) Author: EEGuide.com. Link: https:...

Question 3

I'm trying to send PWM signal to MOSFET gate to control 12VDC 2A motor. The NE555 circuit is built as shown in this article (https://www.build-electronic-circuits.com/555-pwm-circuit/) with the same ...

Question 4

I'm building a circuit in Multisim and I can't get the oscillator to run at 1 kHz. Honestly, it doesn't work at all. I built the circuit but can't figure out what I did wrong. In the finished version,...

Question 5

I want to simulate a push button with a little circuit. I'm using an IC 555 as a timer. The button is in another circuit (different device), pin A has 2.4 V and pin B is GND, it does activate if I ...

Question 6

Is it possible to simplify the circuit by removing the logical NOTs while maintaining the identical output response to the input signal?

Question 7

I am designing a circuit that uses a 555 timer to output a 10% duty cycle pulse train. I don't want to get into the details of what this is used on, as it is not relevant, but long story short I need ...

Question 8

http://electronic-projects.50webs.com/555-based-siren-circuit.htm the source online, but who knows the original designer. U2 is configured to have a much higher frequency than U1. U2 provides the ...

Question 9

I have a device which has a part of that functions as a power failure alarm. This means, if my SMPS is not delivering power to my circuit then an audible alarm will sound off. This circuit is powered ...

Question 10

A long time ago I put together a 555 tone generator from Radioshack parts. The circuit was similar to this: This is the source: http://electronic-projects.50webs.com/variable-frequency-tone-generator....

Question 11

I am trying to implement a power-on delay circuit using a 555 timer. I referred to the circuit shown below: In my application: A switch is used to apply power. When the switch is closed, the input ...

Question 12

This is for a variation on my 9 y.o. grandson's brushless motor project, and my aim is to have the minimum component count in order for it not to look too complicated (I want to demonstrate the speed ...

Question 13

So here is my schematic: TLDR; Basically it is a boundary wire detector transmitter, pushing a 50 kHz 150 mA current into a wire, Q1 and Q2 are used to detect wire interruption, if wire is ...

Question 14

I am using the design below for a capacitance meter project: simulate this circuit – Schematic created using CircuitLab The charge/discharge waveform is relatively stable, so I feel that there's ...

Question 15

I'm attempting to create a 555 timer oscillator circuit, in which the rising and falling delays of the generated clock signal are independently controlled by two analog input signals. As an initial ...

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