Search found 5 matches

by Gordon H
Wed Sep 11, 2019 12:36 pm
Forum: Layout Track & Design
Topic: 3rd rail retrospectively installed.
Replies: 3
Views: 563

Re: 3rd rail retrospectively installed.

There is the Peco Stud Contact Strip SL-17 & SL-18, or the Individulay 'proper' 3rd rail components (IL-120 chairs and IL-1X rail) normally used for outside 3rd but can be fitted down the centre instead.
Not sure if the height of that would suit your skates though.
by Gordon H
Thu May 02, 2019 6:21 am
Forum: Wiring and Electrics
Topic: Led wiring
Replies: 5
Views: 835

Re: Led wiring

The function of the resistor is to limit the current without it LEDs can experience what's called thermal runaway which will limit their life even with the correct voltage applied. The function of the resistor is ONLY to limit the current. The notion of simply applying the 'correct voltage' is fals...
by Gordon H
Tue Dec 04, 2018 1:01 pm
Forum: Other Electrical/Electronics
Topic: Best way to wire LED's
Replies: 5
Views: 1355

Re: Best way to wire LED's

Given the extreme reliability of modern LEDs, properly treated, there is no real reason to expect a single LED to fail in a series connected set. If conditions do arise which cause one to fail, chances are that the others in the same chain would have suffered to some extent too, so would need attent...
by Gordon H
Thu Nov 15, 2018 1:05 pm
Forum: On the workbench
Topic: Bridge Rectifier with no markings ?
Replies: 15
Views: 3137

Re: Bridge Rectifier with no markings ?

Sometimes the positive output of a bridge rectifier is denoted by having a longer leg.