Jump to content

Davidl66

DR4018 Power Supply

Recommended Posts

I have just purchased a DR4018 to drive 8x PECO and Seep solenoid point motors. I understand that, for best performance, I should use a power supply external to the DCC bus and that the range documented in the manual is 12-18V DC or 12-18V AC, 3 amp max draw.

 

I have an old power supply lurking around which is 18.5V 3.5A DC output. Could this be used safely with the DR4018 or is the extra 0.5V going to break it?

Share this post


Link to post
Share on other sites

That is not break it, but you are on the limit of the what the DR4018 will power - especially with Peco and Seep motors - switch turnout individually and you should be ok

Share this post


Link to post
Share on other sites

Thank you for that. I have been using ADS-8fx but I broke one of the outputs when I was dabbling with frog polarity and suffered a short. I know the DR4018 does not have any frog polarity facility. I have been doing the polarity from the switch on the seep motors or using  Gaugemaster DCC80s. I did have pairs of points for crossings being controlled from a single ADS-8fx output but realise I cannot do that with the DR4018. I am controlling everything from JMRI via DCC++ and was going to insert a short wait between the crossing point changes.

Share this post


Link to post
Share on other sites
4 hours ago, Davidl66 said:

I have an old power supply lurking around which is 18.5V 3.5A DC output. 

 

Should be OK so long as it really is regulated DC and not 18.5V nominal from a simple transformer + rectifier + smoothing capacitor. The low load voltage could be quite a bit higher in that case.

  • Like 1

Share this post


Link to post
Share on other sites

Just wanted to round this topic off with an update. The power supply I am using is an HP one from an old laptop so my guess is that it is suitably regulated.

 

The power supply is working and I see no side effects on the DR4018. Setting up a small route in JMRI to switch crossovers works well with the default delay of 250ms between triggering outputs.

 

Thanks again for the help.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.