What are relays? You need relays for various DC/AC devices. Even your car has 30-40 relays on it for your head lamps, tail lights, turn signals, and etc…
Here’s an example of making a Party Light using a CUSB22R that has relays on-board.
You have couple options:
For small to medium apps requiring up to 5A at 250VAC or 5A at 30VDC,
you can try relay4 board or relay8 boards. For continous ON/OFF AC operation, you could be better off with SSR4 or SSR8 Boards.
There’s also Relay Cell or SSR Cell for single output usages and these cost less than $6.
For higher voltage applications, you might want to try:
Allen Bradley relays
Mouser catalog has good options for relay searching too.
2 Responses to DIYers Tool – Relays, relays, relays…
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cool… to bad i dont have a use for them yet…
General electronic projects use them, Or you use transistors with IC’s