Latching vs non-latching Relay

[Rpschultz13]

What is the difference between using a latching vs non-latching relay?

Basic Relay Bypass - PedalPCB.com

Relay Bypass Module

www.pedalpcb.com

Basic Relay Bypass (Latching) - PedalPCB.com

Relay Bypass Module

www.pedalpcb.com

 

[JTEX]

A non-latching relay draws power continuously when set. A latching relay only needs a short pulse of power to get set or reset. It will then retain its current state without needing power.

 

[Rpschultz13]

Ah so non latching you have to hold it down. Got it

 

[Paradox916]

Ah so non latching you have to hold it down. Got it

Not exactly…. The relay will continuously draw power to maintain state until the switch is pressed again

 

[Rpschultz13]

Oh ok. So they both function the same. What’s the advantage of one over the other?

 

[jwin615]

Oh ok. So they both function the same. What’s the advantage of one over the other?

When the device under latch loses power, sometimes you don't want it to return to its previous state when power is restored.
Also, non-latching consumes more power overall.

 

[Rpschultz13]

Does the PPCB latching relay always power up the same state?

 

[spi]

Ah so non latching you have to hold it down. Got it

you don't have to--the circuit does (hence the current draw)