An electronic toggle ratchet relay is a specialised relay that, unlike standard relays, retains its state (on or off) even after the control signal is removed. It ‘latches’ into position and changes state only when it receives another trigger pulse. This makes it incredibly useful for applications where you need a momentary input to result in a persistent action. It is used to convert momentary inputs into on/off operations.
A standard relay would remain on only while the button is pressed. An electronic toggle ratchet relay, however, would turn on with a single press and remain on, then turn off with the next press. It converts momentary inputs into latched outputs, activated via the onboard push-button, an external switch, or an appropriate trigger.
POC Video Tutorial
A true ratchet relay (see Fig. 1) operates on a single-pulse input and relies on magnetic memory to retain its switched state.
Refer to the datasheet for more details. However, this system employs an unconventional design and is best described as an electronic toggle or ratchet relay.
In this configuration, the load is controlled using a push-button switch. When a switching threshold is detected at the input terminal, the relay toggles and latches into its new state. Upon receiving the next trigger signal, the relay toggles again, functioning like a flip-flop.
The functional block diagram of the proposed design is shown in Fig. 2.
Oops! This is an EFY++ article, which means it's our Premium Content. You need to be a Registered User of our website to read its complete content.
Good News: You can register to our website for FREE! REGISTER NOW
Already a registered member? If YES, then simply login to you account below. (TIP: Use 'forgot password' feature and reset and save your new password in your browser, if you forgot the last one!)
