Latching Relay Circuit Momentary Switch

The relay only draws current when it is being switched.

Latching relay circuit momentary switch. This circuit will change a momentary pushbutton switch into a always on switch. When we press push button relay should be on it means we use normally open type push button because when we press this switch supply goes forward. A latching relay is a two position electrically actuated switch. Latching locking relay circuit.

Step 2 when supply comes to relay coil relay should be on. If you would like to turn it off you will need another switch. With less than 5 dollars in parts you can do what is needed to convert a pulsed momentary output into a latched one instantly. These two step we see in following picture relay latching circuit using push button.

This circuit allows an spst momentary pushbutton to act as a push on push off switch using a dpdt latching bi stable relay. Figure 1 circuit converts momentary action push switch into latching power switch. The latching relay maintains its position after the actuating switch has been released so it performs a basic memory function. 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.

To understand how the circuit operates assume that the dc power supply v s has just been applied capacitor c1 is initially uncharged and q1 is off. It is controlled by two momentary acting switches or sensors one that sets the relay and the other resets the relay. The relay only draws current when it is being switched. Other methods of operating can be used i used an automotive car remote control central door lockin.

What will i think of next. At other times the only current drain on the 12v supply is the leakage current of one 22µf capacitor which is very low. Knacro dc 6v 9v 12v 18v 24v 6 24v 1 channel 10a self latching relay module one button bistable switch one button start stop high level trigger dc 6 24v 10a 1 channel 2 7 out of 5 stars 2 13 80 13. 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.

It was originally intended to allow a single pushbutton switch on the dash of a vintage car to provide a latched function.