11answers

[Others] Can I use a transistor as a relay?

I have a hardware component that requires 5V and 300mA to work. The Arduino output current of the Pins is 50mA, to the best of my knowledge. Only 40mA for 5V Pins.My idea was to use the 5V and 2A of a...
2answers

[Others] How to achieve energizing a relay with 2 isolated inputs.

I have a 12V relay that I want to be able to energize with two inputs. These inputs might be on individually, or both at the same time. And they must be isolated from each other completely. How can I ...
2answers

[PCB Prototype] Dose separate DC power require for "LIGHT AND MOTION SENSITIVE LAMP" Circuit?

If "LIGHT AND MOTION SENSITIVE LAMP" circuit run by 220VAC then will it automatically power the sensor and relay or separate DC power needs to apply?Why there are two relays in above c...
1answers

[PCB Prototype] Can we set the sensitivity in the circuit?

Is it possible to change the sensitivity of the triggering circuit?
3answers

[PCB Prototype] Need pcb design to have mini relays with esp32s chip and hilink ac to dc converter

I need pcb design to have Hilink ac to dc converter with ESP32s and mini/micro relay (2ch/4ch/8ch) and it should work similar to sonoff 4CH R2 relay. Is it possible to have everything on single pcb so...
1answers

[PCB Prototype] Arduino project---some questions about relay

I am learning relay recently and made this project.The line and the parameters were correct. But after the power it will turned on and off at an extremely fast rate, completely out of control, what is...
  • answered May 02,2018
    by Tomas
Ranking Name Answers
1 PCBWay Team 8
2 Frederic 3
3 Engineer 1
4 Jegatheesan Soundrapandian 1