Hi everyone! I'm Buse. I'm trying to control a motor speed for a personal project. You can find the schematic of the circuit I found on a book. This circuit works with only the PID parts contrcuted. My problem start when I add the other parts. For example, U1 opamp (top left) is supposed to...
Can someone help me build a circuit that is connected to a 115vac 60hz fridge compressor that runs ITC-1000f temp controller, i want to power a circuit properly with out killing the equipment I am willing to purchase any Amazon part! I have LM338t voltage regulators, I am inclined to install but...
The design that you are going to see next belongs to a sensor that I am building, this sensor will be capable of measuring voltages between 25-40 volts through the ADC of a microcontroller and at the same time feeding on these voltages.
A fundamental part of every sensor is to...
Took apart this gas-powered tool to service the carburetor but wiring leading to the ignition coil/spark plug came apart. Unfortunately, the product manual doesn't show wiring connections, subcomponent is developed overseas and the company has only offerred to sell me additional parts without...
So I am making a little joule thief robot looking thing with my son. I should have done a test circuit first but for some reason when I connect the battery I get a tiny little blink and that's it until I disconnect and reconnect then a little tiny blink again. Any ideas on what the...
I was trying to visualize a beginner circuit problem on my breadboard and I plugged in my circuit, touched a resistor and got a nasty shock. I am a cs student playing with circuits to build some logic gates so I really am a complete beginner.
Why did this happen? How can I prevent this from...
There was an example from my book and I wanted to build the same circuit on LTspice to test the results.
However, when I create to simulate the circuit in the LTSpice environment you see below with the different outcome values.
and here my ltspice results:
I could not find the same voltage...
in the following image you can see a circuit with a npn transistor. I marked the given values with red and the unknown with blue. Below the circuit you can see my calculations and solutions. I'm stuck at finding I1. I would be very thankful for some guidance.
Hi, can anyone here tell me if the function I found that relates the Vin to Vout is right? So I made a mesh analysis to find the current in the first mesh (left to right) and in the second and finally got that the Vout = (2/11)*Vi +6.328 (is it right?)
threshold voltage = 0.7V
Hi! I have a question related to electronics:
Someone told you that there might be a problem with the electrical circuit: In addition to the standard 50Hz alternative voltage, it mights exist another disruptive frequency at 50.5Hz.
For how long, at least, should you measure the voltage in the...
I have a small question about transistors. I have a npn transistor (bc337). I have 5Volts on the emitter from an arduino. The base goes to a resistor (1k) and then to ground. The collector goes to a resistor (330) and then through a LED to ground. As far as I understood the...
Looking for a plausible solution to the following problem:
1. Currently - simple potentiometer (linear, 100k Ohm) control that controls an AC motor
2. Motor has a dedicated DC control circuit embedded with the following possible control connection points a). "Low Voltage +10V...
I am trying to make a backup induction heater that will heat up a stainless steel cell (2in diameter by 5in length cylinder, approx. 5lbs). I need to heat it to 100 degrees Celsius, controlled externally by a thermometer so no circuitry needed from temp control (unit will be manually...
I'm designing a resistive load bank. Currently, I am designing the switch that will be controlled by a control signal via Arduino uno rev 3. The bidirectional switch is composed of two back-to-back igbts connected by their emitters with anti-parallel diodes. (Due to cost, there are two...
I'm new here and also a newbie who is teaching himself.
I have one question:
How come if i put resistor R1 before the output, the output is always 1? Even if A and B have an input signal.
Hello. Thank you for clicking on my article.
I'm from Korea and a college student.
I'd like to find a solution.
My circuit simulation speed is too slow. So I want to speed up.
I saw what other people did at Google and made it.
I want to speed up the simulation.
I'd appreciate your help.
Hi there, got a serious problem about Counters.
i have to create "a circuit that counts from 0 to 9 then from 9 to 0 using two separate counters" and "must consider BUS concept". i used two 74192 and two 74153 Multiplexers ( for BUS ), one of the counters is ascending and another one is...