WebApr 15, 2024 · The classic Lionel transformers and their whistle/horn activation controls have 3 positions: Off - No whistle Pickup- High DC offset just enough initiate the command Hold - Minimal DC offset to hold the … WebJan 15, 2024 · Whistle. The symptom you describe is in part due to the way Lionel designed their whistles controls. The old style copper oxide rectifiers Lionel used (to produce the low DC voltage to activate the whistle control relay in the tenders) will overheat if they carry the full current drawn by the train for an extended period.
Tender whistle does not stop when power is on - Lionel Train ... - iFixit
WebSep 1, 2024 · whistle circuit consists of a complex series of operations going on in sequence. The whistle control has three positions: Off, Pickup Voltage, and Holding Voltage. When the lever or button on your control is at rest, the circuit is Off and just passes current from the voltage handle to the track. WebFeb 24, 2012 · They all use a horn relay that is identical to a post war whistle relay in a tender. They are not polarity sensitive. +DC or -DC will operate the relay. There are no bells. There are three major problems with the horns, assuming that the relay is … easy and fast breakfast ideas for adults
Solid-State Postwar Whistle Relay Replacement - Model Train Forum
WebDec 15, 2009 · When using a meter it wil Detect AC over DC since the current is mostly AC. The wide chip at the bottom of the relay is selenium a rectifier. If you remove the transformer cover you will find more of the round chips or diodes. The theory is the pulse activates the … http://www.toytrainrevue.com/pw-horn.htm WebSep 27, 2016 · How it works? There is a constant voltage applied to the anode of the opto from the simple DC supply comprised of D1 and C2. As long as there is pure AC on the track, C1 does not charge sufficiently to allow the transistor … cumulated triple bonds