Kaydee 309 electric uncoupler timer

[RichardW]

I need some advise on the use of a timer with the Kaydee 309 magna electric uncoupler.

 

I would like to use a push button to active the uncoupler, need to put a timer in the circuit to leave both hands free for train control.

 

As the voltage required to the uncoupler is 16 volt I feel that any 12 volt timer would be unsuitable.

 

Has anyone had any experience of using a timer with these uncouplers or know of one that works?

 

Thanks in advance for any replies.

[kevinlms]

2 hours ago, RichardW said:

I need some advise on the use of a timer with the Kaydee 309 magna electric uncoupler.

 

I would like to use a push button to active the uncoupler, need to put a timer in the circuit to leave both hands free for train control.

 

As the voltage required to the uncoupler is 16 volt I feel that any 12 volt timer would be unsuitable.

 

Has anyone had any experience of using a timer with these uncouplers or know of one that works?

 

Thanks in advance for any replies.

You can use a 555 Timer to drive a relay, the contacts of which can control a different voltage (depending on the relay contact ratings).

 

An example is here.

http://www.555-timer-circuits.com/driving-a-relay.html

 

You want the first circuit.

 

Note that for your intended purpose, you'd need a short time.

[RichardW]

Thanks Kevin

 

I'll mock up the circuit to test it out, but seems logical to me.

 

Guess your a London Midland fan too!

 

Stay safe.