Relays: Difference between revisions
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=Types= | |||
*SPDT - switches between 2 devices, one pole. [https://www.electroschematics.com/spdt-relay-switch/] | |||
*DPDT - switches between 2 devices, 2 pole [https://www.electroschematics.com/dpdt-switch-relay/] | |||
* | |||
=More= | |||
*common relay and pinout - [http://tutorial.cytron.com.my/2012/08/01/identify-terminal-pins-of-a-relay-without-reference-to-datasheet-2/] | *common relay and pinout - [http://tutorial.cytron.com.my/2012/08/01/identify-terminal-pins-of-a-relay-without-reference-to-datasheet-2/] | ||
Revision as of 22:07, 15 April 2023
Types
More
- common relay and pinout - [3]
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 - [4]
Life
- Life of a relay is decent. [5]
- Can be a good long term solution where cycling happens only once or few times per day in off-grid power control automation