Well, as the title states, im hoping someone can offer a little advice on wiring a 12V coin Meter.
I have had a good search through the forums, and have read the threads by the following people:
clhug -
http://forum.arcadecontrols.com/index.php?topic=52711.0mountain -
http://forum.arcadecontrols.com/index.php?topic=65671.0Jdurg -
http://forum.arcadecontrols.com/index.php?topic=78221.0I've found them quite helpfull indead, but im not 100% up on my electronics I'm afraid. I like DaOld Man's circuits proposed in Jdurg's thread using Optoisolators, but am not confident in their application or calculating required resistors. I have been able to come up with a few ideas, but am unsure as to whether or not they will work.
Here is what hardware i have, to build the circuit i was thinking of using, without having to buy extra components:
- 12Vdc Coin Meter (With NO Protection Diode Fitted)
- 2 x DPDT 12V Relays - (In the circuit, only one pole and one NO connection will be used, so diagram depicts SPDP)
- IPAC4
- A Selection of Diodes (1N4001, 1N4148 and a few others)
Here is what I want to do:
Wire the 12V Coin Meter to increment +1 for each coin deposited in EITHER Coin 1 or Coin 2, while keeping the IPAC coin signals electrically seperate, and protected from the 12V supply. I realise this would be alot easier with a 4.5V-6V meter, but as yet haven't been able to source one (UK), although the kind chaps at Gremlinsolutions are on the case, but are quite busy atm.
So I've attached an image of the circuit i've come up with, but have my doubts whether or not I've got the circuit right, so any input would be greatly appriciated!
The Diode across the the Counter + & - is a Protection Diode. Ive shown diodes across the coils of the relays (as protection diodes), but are unsure if their polarity is correct, or if they are truely needed.
The Diodes attached to the NO connectections of the two Coin Switches are intended to direct and restrict current flow.
So, my question is, will the circuit work, or have i gone way off course? Is my diode placement and polarity correct?
Any advice will be greatly appriciated!
Cheers, boomstick