|
|
Post by speedstor49 on Mar 10, 2014 6:12:12 GMT -5
Hi Paul. I notice that the Dapol instructions say that their signals should "not under any circumstances" be connected to a 12v DC supply. Will your 8-9v DC supply be okay? I am currently powering mine off the power output of my NCE Power Cab.
|
|
|
|
Post by Paul Harman on Mar 10, 2014 13:00:24 GMT -5
The Dapol signals have two separate circuits in them, one for the main electronics and motor which is full wave rectified and regulated at 3V DC. This circuit will be happy on any voltage up to 16V industrial frequency AC or DC. The second circuit is half wave rectified and powers the white light. Dapol specify this as having to run on 16V AC, so if you run it from DC it has to be around half voltage because the white LED will be running continuously and not 50% of the time. 8 or 9 V is therefore the DC voltage that will be fine - 12V DC is therefore too much and the LED will be overdriven. Dapol use an 820R resistor in series with the LED to limit current.
The DP8 is able to take in DCC, AC or DC and convert this down to 8V DC which is fine for running both circuits of the Dapol signal - and probably better than 16V AC even if Dapol will not admit it.
|
|
|
|
Post by speedstor49 on Mar 10, 2014 13:09:24 GMT -5
Hi Paul,
Many thanks for a very comprehensive reply.
|
|
