I have a latching relay set up that is working well but I would like to switch it to a solid state circuit. Can anyone help me with this? I really just don't have the experience or expertise to do it. But I really would like to understand how to do it. The 6 volt momentary input is from a receiver. Thank you in advance.

 

There are motor control ICs available for motor reversing.
How much current does the motor draw?

 

There are motor control ICs available for motor reversing.
How much current does the motor draw?

.3 amps

I do have another setup that I am trying to figure out which is a lineal actuator that needs to reverse, but that will be a problem for another day.

 

Are you wanting to build a circuit or buy a module?

 

Are you wanting to build a circuit or buy a module?

I wouldn't mind buying a module for my project but I would also like to try and build one for the learning experience.
I am a novice.

 

OK, I see that is an electrically latched relay circuit, not a mechanical latching relay. AND it is not a motor reversing circuit, either. So no reversing function is required.
The function of a momentary operation of relay K1 latches relay K2 on thru the switch, which closes before the six volt start pulse ends, and the motor runs until the limit switch opens, which releases relay K2 and the motor stops.

That is the most difficult to follow simple circuit schematic drawing I have seen in years!!

So the request is for a circuit that will latch on with an external six volt signal and keep driving the 12 volt motor from the battery, until the switch opens, at which point the motor will stop and the circuit will be ready to repeat the cycle.

This control can be done with a single NPN power transistor sized adequately for the motor start and run current. The description follows. The six volt source must be separate from the 12 volt battery circuit, it appears.
The transistor emitter is tied to the battery negative side. The motor is connected between the battery positive fuse and the transistor collector. The six volt trigger negative side is connected to the emitter. The six volt pulse positive side is connected to a diode (D1) and resistor (R1) and then to the transistor base.
One side of the limit switch is connected to the battery positive fuse thru a resistor (R2), the other side of the limit switch is connected thru a diode (D2) to the transistor base, as is R1. Another resistor, (R3) is connected from the transistor base ti the transistor emitter.
That is the whole system circuit. Operation is as follows:
When the six volt pulse arrives, the transistor is biased into saturation thru D1 and R1, and the motor starts running, which causes the limit switch (LS1) to close. Diode D1 prevents current from flowing back into the six volt source.
When LS1 closes, bias current flows thru R2 , LS1, and D2 into the base, keeping the transistor saturated until LS1 opens. At that time R3 pulls the base back to the emitter voltage and the transistor switches off, stopping the motor.
IF there is a motor noise problem, a suitable capacitor (C1) should be added between the junction of R1 and LS1 and the battery negative side.

The values of R1 and R2 will need to be selected based on the transistor gain, to keep it saturated at the current the motor draws, considering that R3 is also a part of the load. R 3 will probably be 1K ohm, depending on collector to base leakage with the base open.

 

That is the most difficult to follow simple circuit schematic drawing I have seen in years!!

It does seem to be, but a least he posted a schematic.
With all the complaints on this forum about posters not including a schematic, I rather surprised that you are one of them.

 

I'm thinking like this:

EDIT: C1 = 0.1uf

 

It does seem to be, but a least he posted a schematic.
With all the complaints on this forum about posters not including a schematic, I rather surprised that you are one of them.

First of all, I am not able to generate a schematic. And if I draw one and take a photo with my phone, then what?? My phone does not do internet. And if you are unable to visualize the circuit from that very detailed description, there is no way it could have been more descriptive. How would any engineer be able to create a design without visualizing it first?? How do you suppose that those folks who no longer see are able to be creative???
Take a pencil and paper and as you follow that description you can create an exact schematic of that circuit.

And then look at the circuit created by "sg", except that one uses a mosfet and optoisolator. The only fault is that the switch, U4, should be after the top resistor, and be below the capacitor. That is because when the capacitor is charged it may tend to keep the mosfet conducting long enough for the system to coast past the position where the switch is open.

 

First of all, I am not able to generate a schematic. And if I draw one and take a photo with my phone, then what??

Thai is a little surprising for someone of your apparent calibre!??
There are a few freebies out there, Kicad. - LibreCAD etc , etc?
No need for photo's etc?

 

First of all, I am not able to generate a schematic. And if I draw one and take a photo with my phone, then what?? My phone does not do internet. And if you are unable to visualize the circuit from that very detailed description, there is no way it could have been more descriptive. How would any engineer be able to create a design without visualizing it first?? How do you suppose that those folks who no longer see are able to be creative???
Take a pencil and paper and as you follow that description you can create an exact schematic of that circuit.

So you don't have access to a computer to generate a schematic as all those on this forum are encouraged to do?
How do you generate the text for this forum?

No, I can't visualize the circuit from your wordy description and I doubt that many can.
My "visualization" occurs as I draw the circuit.
And I'm not interested doing the work to draw it from the description.

 

if I draw one and take a photo with my phone, then what??

First I'll make an assumption - you don't have a computer. You solely use your cell phone. Even still, I'd imagine there must be a solution. Take the picture then copy the image. Then go on line and where you type the text you tap and hit paste. That MIGHT get a picture on the web. Can't say that for sure but I think that might work.

Second, if you DO have a computer but don't want to download programs, here's what I do: Take the picture then message it to myself. Then from messenger I can open the picture and save it to the desktop. Then from the desktop drag the picture on to the web page. It should work.

Actually, I have a Mac. I air drop photos directly into the download file. From there I can drag them anywhere.

I've noticed over the years a few typo's when you type. At some point I believe you've mentioned using the cell phone as your internet access. So for those being harsh for the lack of drawings, schematics and pictures from @MisterBill2, cut him some slack. For him to do what he does with limited capabilities is admirable. It's far more than I'd care to even attempt.

 

Any mention of my cell phone as an internet access is that it does not. I suppose that I could download a new drawing program and learn to use it, and that may actually be worth the effort.
And certainly I do occasionally "fat-finger" as I type, and not always catch it.

And I am having a hard time imagining not being able to visualize things without a physical image.

 

Now I'm totally confused !!!
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And I am having a hard time imagining not being able to visualize things without a physical image.

I hated reading. Especially those books without pictures. Pictures paint a thousand words while, for me, a thousand words painted almost nothing.

 

Any mention of my cell phone as an internet access is that it does not.

I guess my memory is slipping faster than I thought. I thought there was still time for me. But these days some words - um - um - elude me.

 

Just built this today. I'm retired from the world of electronics. Now I build custom cabinets. This one is for my shop. OK, let's stay on topic.
View attachment IMG_4691.JPG

 

View attachment 335992

Not working for me ?

 

And I am having a hard time imagining not being able to visualize things without a physical image.

Well, imagining is the problem alright.
There are a small percentage of people who have aphantasia,, and I happen to have a mild degree of that affliction.

To me, drawing the schematic takes a lot less effort than writing the several hundreds words you did to describe your circuit.

 

OK. Don't know why it wouldn't upload before. Maybe it was trying to reference a file on my computer. So I took a screen shot and that went right up.