Relays: Difference between revisions
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5v-15A 120v relay boxes - [https://www.amazon.com/Anfukone-JQC-3FF-S-Z-Electromagnetic-Power-Relay/dp/B081H4BP1M/ref=sr_1_9?dchild=1&keywords=5v+15a+relay&qid=1616137806&s=industrial&sr=1-9] | 5v-15A 120v relay boxes - [https://www.amazon.com/Anfukone-JQC-3FF-S-Z-Electromagnetic-Power-Relay/dp/B081H4BP1M/ref=sr_1_9?dchild=1&keywords=5v+15a+relay&qid=1616137806&s=industrial&sr=1-9] | ||
=Life= | |||
*Life of a relay is decent. [https://electronics.stackexchange.com/questions/167692/are-relays-reliable-for-long-time-use] | |||
*Can be a good long term solution where cycling happens only once or few times per day in off-grid power control automation | |||
=Links= | =Links= | ||
*[[Solid State Relay]] | *[[Solid State Relay]] | ||
Revision as of 09:03, 19 March 2021
- common relay and pinout - [1]
Power Draw
A solid state relay will draw .1W on the driving side, but the load side loses significant power (1V drop). 20W loss when running a 20A load - significant through the day. If solar, that is good, but if we are night-time converting, power loses are not so good at this level.
May want a mechanical relay. Sainsmart relay is 15-20mA at 5v to energize. And no voltage drop on the power side, as it's not going through a transistor like in a solid state relay.
5v-15A 120v relay boxes - [2]
Life
- Life of a relay is decent. [3]
- Can be a good long term solution where cycling happens only once or few times per day in off-grid power control automation