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swchuck

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Hi
for model railway.


I would like to use this circuit to toggle a dpdt relay to reverse polarity on track. The relay will be a dual coil latched, a type XO43 12 volt.

Is the toggle arrangement on the above circuit suitable ?

Instead of a pushbutton it will have a IR sensor to indicate movement, when first sensed it will change over the polarity and next sense it will be reset
to the original and so on.
Because the relay is dual coil (and dpdt) will this circuit make it work.

Thanks
Charles Harris
 

Hi,

first you need the datasheet of the relay to exactly see it`s operation of contacts, but also voltage, current and timing for coil.

Do you have a 12V supply?

Do you want/need some initial state on power up?

What is the IR switch? You need it´s datasheet.
Does it also run on 12V and give 0V/12V output? What timing?

Klaus
 

Hi Thankyou. Appreciated. Will get back info in a few hours with the specs.

Monday morning here in New Zealand

Charles (retired 78 yo)
 

Hi Attached are 2 docs.
Hope these will answer your questions

The relay doc has a circuit on page 5, with 2 sensors, one for on, one for off.
The sensor doc has a similar circuit on page 8, an IR for on and an IR for off.


Instead of 2 sensors I want 1 sensor which toggles each time it detects (the delay in IR sensor will be used) the polarity wiklk cchange
will changeover.

so IR detects and 'sets', detects again and 'resets', then detects again 'set', etc etc

Thankyou

Charles
 

Attachments

  • JTELECTRONICS-JTEILD-INFRARED-LOCOMOTIVE-DETECTOR.pdf
    1.3 MB · Views: 172
  • JTELECTRONICS-JTELR1-EXPANDABLE-LATCHING-RELAY-BOARD.pdf
    771 KB · Views: 165

Hi,

My opinion:
* The two coil latching relay over-complicates things
* the circuit overcomplicates things

What about other options:
* Using a single latching (toggle) relais. No additional electronics needed. Often used for light control on long corridors.
* or using a standard (non latching) relay and a toggle flip flop ( or JK flip flop) circuit.

Klaus
 

Hi Klaus
Thanks for your comments. Yes I understand what you say and there are better ways. But unfortunately I have been supplies
with several of each of the components, and now have to get them to work.
So with my limited knowledge I will have to get there somehow.
Thankyou
Charles
 

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