Latching Relay Circuit Diagram

The circuit as shown has been tested with the jaycar sy4060 relay.

Latching relay circuit diagram. It will work with other dpdt twin coil latching relays but the resistor and capacitor values may need to be adjusted to suit. Other methods of operating can be used i used an automotive car remote control central door lockin. Current limiting resistors must be used at the bases of. The two schematic wiring diagrams below show how to wire an electrically latching relay circuit.

The diagram above shows how such a relay can be used to make a latching relay circuit the circuit has two buttons one is a push to make which closes when pressed but is otherwise open and the other is a push to break which opens when pressed but is otherwise closed. Resistor r1 and r4 work as a current limiting resistor for transistor q1 and resistors r2 and r3 work as current limiting resistor for transistor q2. Power source 5v 12v circuit diagram. The wa4 mechanical latching unit for af tactors can be easily converted into compact latched contactors.

When the push to make button is pressed 12v goes across the coil energising the relay. Latching locking relay circuit. Relay latching circuit using push button we connect relay and push button as per figure. This is achieved when an electromagnetic current generated by the electrical input from the first device attached to the relay causes the contacts in the switch to open or close.

They are easy to understand you can see them working and they are still in use today in many many systems to switch voltage into circuits to. This circuit will change a momentary pushbutton switch into a always on switch. This creates a basic memory function the relay remembers. An electrically latched relay is a standard relay with one of its own contacts wired into its coil circuit.

Relays are used where it is necessary to control a circuit by an independent low power signal. Relays with lower resistance coils will need larger value capacitors and smaller value resistors. When we press push button supply goes to relay a1 point and relay gets on and its contact changes but when we release push button supply cutoffs and relay gets off. A latching relay is electrically set to one position and it remains latched in that position until it is electrically reset to the opposite position.

A relay is an electrically operated switch it consists of a set of input terminals for a single or multiple control signals and a set of operating contact terminals. A general purpose relay switch is designed to function as a bridge on one or more connected devices or circuits receiving an input signal from one source and transmitting an on off set reset output to another. If you would like to turn it off you will need another switch.