Calculated Resistor Wattage
WATTS
Voltages in Volts - Current in Milliamps - Resistance in Ohms ...
Resistor - A device used to reduce the intensity of electricity.
Restricted Track - A track section where train speeds are reduced.
Retarder - A device used for decreasing speed; brakes.
Resistor
Restricts the flow of electrical current to lower its voltage or limit its current.
Return loop ...
Resistors are installed by bending both leads in the same direction, making a "U" shape. Place the leads of the resistor in the correct holes. While holding the resistor firmly against the board, trim off the excess wire on the copper side.
Resistor
In electricity, a device which impedes current flow, thereby reducing the voltage passing through a circuit; resistance is measured in ohms.
Restricted Track ...
The load resistor is tucked inside the wood block where it can get quite hot doing its job without any chance of frying your fingers. The bridge rectifier finds safe haven for its tender wires in its own hole in the wood.
A resistor was in parallel with a diode to allow most of the AC through to power the train, and rectify only enough DC to trigger the whistle/horn relay.
Dynamic Braking A method of train braking where the kinetic energy from the train movement generates current at the locomotive traction motors, and is dissipated in a resistor grid on the locomotive. Dynamite Initiation of an emergency application.
Chopper Control A development in electric traction control which eliminates the need for power resistors by causing the voltage to the traction motors to be switched on and off (chopped) very rapidly during acceleration.
By correctly selecting the resistors used in the secondary resistance or slip ring starter, the motor is able to produce maximum torque at a relatively low current from zero speed to full speed.
This is done by using a bank of resistors which convert the electricity to heat which is then radiated away. On EMD locos these resistors appear as a bulging grille near the center of the roof.
Connect a 100-200ohm resistor to each of the cathode wires or a 200-400 ohm resistor to the one anode wire. Then connect the 3 wires to an alternating flasher circuit board like the ones made by Dallee, Miniatronics, GRS or Ram Track.
a transformer to drop the voltage, and a rheostat, which is a variable resistor to change voltage and control the speed of a train. A circuit breaker protects the unit by opening the circuit when too much current is drawn from the pack.
The variable voltage transformer has low losses compared with the variable resistor. The transformer may have a series of taps that yolu can change manually to control the motor speed or it may have a motorized tap changer.
Using the traction motors as generators whose output is dissipated in a massive resistor bank. The effect being to consume the trains momentum in generating electricity.
Add
To couple car(s) to a train.
A means of braking a locomotive or car having electric motors by using the motors as generators and dissipating this power through resistors.
the control system is such that the traction motors can also act as generators. Thus, when decelerating, the motors feed current back into the electrical system; or, in the case of diesel-electric trains, dissipate the generated power in resistors.
On some electric railroads the current produced is returned to the power distribution system. On diesels the current produced by the traction motors is passed through resistors that convert the energy to heat, ...
I looked back to see smoke coming from the dynamic brake resistor grid. I lost all of my dynamic braking amperage on the lead unit which means it is no longer making any effort to slow the train.
 See also: Switch, Track, Circuit, Current, Layout
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