Hi. I am replacing an old solenoid with a new latching pull solenoid, and need help designing a circuit for it.
A latching solenoid works this way : You send a short pulse of power to energize the coil of the solenoid. It pulls in and then power is removed. A permanent magnet then holds the solenoid plunger in for an indefinite amount of time without any power applied. The solenoid is then turned off by sending a second pulse of power, but opposite (-) voltage.
Ideally I would like a button that when first hit it activates the solenoid and then the next time you hit it, deactivates and so on repeat. It should not keep sending power if someone decides to hold the button down. The specs say 1 sec max on time. I think the coil would overheat and possibly melt. So that would be bad. Nothing is listed in the specs for nominal on time, but I'm assuming something in the range of millisec pulse would be ideal? I'm not sure.
The circuit should also have the safety components. I have read that solenoids need diodes and caps possibly?
Ledex Magnetic Latching Box Frame Solenoid B14HD-L-256-B-6
27.9VDC @ 10% duty cycle in order to get the max force. I was told that duty cycle spec is the electric power duty in order to lower the amps. It is not the mechanical on/off duty time of the solenoid moves.
Attached is the spec sheet.
I'm not opposed to buying a pre-made driver if anyone has a link. Otherwise I will continue with trying to find and design a circuit.
Sorry for the long post, but I wanted to make sure you have all the info. Anyone able to come up with a good circuit design?
Thank you for the help.
A latching solenoid works this way : You send a short pulse of power to energize the coil of the solenoid. It pulls in and then power is removed. A permanent magnet then holds the solenoid plunger in for an indefinite amount of time without any power applied. The solenoid is then turned off by sending a second pulse of power, but opposite (-) voltage.
Ideally I would like a button that when first hit it activates the solenoid and then the next time you hit it, deactivates and so on repeat. It should not keep sending power if someone decides to hold the button down. The specs say 1 sec max on time. I think the coil would overheat and possibly melt. So that would be bad. Nothing is listed in the specs for nominal on time, but I'm assuming something in the range of millisec pulse would be ideal? I'm not sure.
The circuit should also have the safety components. I have read that solenoids need diodes and caps possibly?
Ledex Magnetic Latching Box Frame Solenoid B14HD-L-256-B-6
27.9VDC @ 10% duty cycle in order to get the max force. I was told that duty cycle spec is the electric power duty in order to lower the amps. It is not the mechanical on/off duty time of the solenoid moves.
Attached is the spec sheet.
I'm not opposed to buying a pre-made driver if anyone has a link. Otherwise I will continue with trying to find and design a circuit.
Sorry for the long post, but I wanted to make sure you have all the info. Anyone able to come up with a good circuit design?
Thank you for the help.
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