Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
I'm designing a project which involves a microcontroller sending data over SPI to two SN74HC595N shift registers which, then control some level shifters to turn on and off some 12v end devices. (The MC and the register circuit are on two separate boards) I want to power the shift registers and...
Hi.
I want to warn you in advance that I am not an electrician. Electricity is just my hobby and here at electro-tech-online.com I want to improve.
I wonder if it is possible to identify a short circuit (circuit) based on the resistance of the cable to ground ??
The multimeter can display the...
Hey guys,
I have just been introduced to time constants and I'm having some trouble with this question.
What frequency value do you plan to use to obtain the correct time constant for a 22 kΩ resistor? (Hint: It takes five time constants for a capacitor to go through the full charging...
Hello! Good evening to you all! I'm currently brushing up on RC & RL circuits in preparation for an upcoming exam, and I found this circuit to be rather complex in its design. I've had a limited understanding of natural and step responses for RC & RL circuits, and this circuit certainly hits it...
Hi all
The project I'm working on requires me to use two linear 20k potentiometers to change two values, time and temperature.
What I'm doing is running a heating element for a certain period of time. The user selects the time(Range 5-9 min) and temperature (100-150C) and pushes a button, then...
Hi there,
I'm trying to create an electric heater for an insect repellent mat.
The only constraint is that I must use a 18650 battery.
The mats are about 35x50 mm and they need to be heated at about 130F.
In the chat, Mike_2545 suggested a power resistor like this one
and also pointed...
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