j pac pulse signal

[G1zm0]

when i wire my me111 to jpac, i take it i take the 12v from psu and just connect the signal pulse wire to the jpac or do i need a diod in place? dont want to fry jpac?

[G1zm0]

anyone?

[Turnarcades]

This has been covered loads in the last few weeks;

The i-pac and J-pac require a 5v coin signal - anything larger can blow things, which a lot of people didn't seem to know. This is why the coin door they supply comes with this diagram and a 5.5v zener diode;



If you know how your coin mech is wired you should just get a zrener diode from your nearest electronics outlet (for about 20 pence/cents) and do similar as shown here. Depending on your coin mech though it may still not work properly as some multi-coin mechs with credit boards work slightly differently.

[G1zm0]

ahh thanx much, ive 4 different mechs to connect will go and get some diods,

so they dont go inline with the signal ie. ------{ |)------  but connected in middle of signal and ground

signal ground====={ ¦}---------- SIGNAL

[Turnarcades]

Yes that's right. Someone once suggested using an inline 5v restrictor but it didn't work, has to be the zener diode.

[G1zm0]

went to maplin and got a 5v zener diode, 1.3w?

will this do as i didnt know current drawn. so explained what it was for and got this?

if its done like it says on ultimacs diagram, wont the 12v just flow right through the wire without going through the diode?

[Turnarcades]

The current shouldn't matter. The ones I bought were 0.5w and worked fine. The diode effectively reverses any excess voltage and sends it through the ground, leaving a 5v coin signal to go to your i-pac.

[G1zm0]

ok i put my diode on, i split the ground wires and soldered the  side without the stripe between them, the side with strip i soldered between the green wire with red strip.

after that i put the meter to diode setting, i inserted prob into signal and other one to other side and i got 0 on meter,
i did same with other side (neg) and i got .702, is this ok before i wire it up?

dont want jpac to pp its clogs

[Turnarcades]

Sounds about right, so give it a go. People have used coin doors without the diode without problem for several months, so if anything you are fairly safe from the off, but the diode just gives that extra bit of protection in the event of surges, and keeps the overall voltage down permanently, so better in the long run.

[G1zm0]

thanx, will now go out and start rewiring.