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.
Hi, I have an IKEA wireless led power supply which outputs 24V DC / 54 mA current /10W max (model: ICPSHC24)
Challenge: I want to turn on a 220AC appliance when the led is on.
Unfortunately, the output current is too low to trigger a relay such as HF152FD, which would be the simplest and...
Hello everyone.
I came across while reading the opto-isolator technique used for electric isolation in embedded systems/ Integrated Circuits design that " Opto-isolator is not recommended for electric isolation in power applications IC's mainly due to its dV/dt sensitivity". So I would like to...
Hello,
I am working on a DIY project to interface a lot of signals to a NMEA2000 bus to be able to controle an older analog engine and other sensors with a new multi function display.
To do so I am using Arduino / Teensy microcontroller together with a NMEA2K library. I started to design the...
I'm working with a system that requires me to read 120VAC inputs on a pivot irrigation system. The wires travel 1/4 of a mile. Occasionally on the line I am reading, the voltage is 65VAC instead of 120VAC. I believe this is an induced voltage because of the length of the wires. I only want to...
Hi,
Some opto-couplers, like 4N25, have a terminal for the base of the output device, what are the advantages of having this terminal? Looking for an answer, I ran into this. I can somehow understand that the base connection can increase the speed but I don't understand how this terminal can be...
Good Afternoon
I am busy building a static VAR compensator for a project and i need to use TRIACS to switch in my capacitor banks. The system is 3 phase 400 VAC and consists of 3 motors with varying loads. There is a system that determines the power factor and switches in the capacitors. Today...
Good Day,
I am really struggling to get a "simple" Triac circuit to work. I started by consulting the typical application from the optocoupler MOC3043 datasheet:
I chose the MOC3043M as is was suggested for 240Vac operation and had the lowest "turn-on" current (5ma).
I've constructed the...
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