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The colour aspect kits have been designed as a "generic" colour aspect signals that can be used in a wide variety of modelling "eras". Kits can be assembled with solder or superglue. LEDs are prewired - simplifying assembly.
LED’s and Resistors
These kits are not toys and are unsuitable for children under 14
The LED’s are supplied with resistors for use with a 12V DC supply.
They are not suitable for direct connection to Mains Voltage.
Led’s have a very long life but only if they are used correctly. It is vitally important that you connect a resistor to EACH LED BEFORE connecting the 12V DC power supply. This important to prevent the resistor failing but is also very important from a safety point of view.
Led’s are Current Driven devices. This means that a resistor is essential to LIMIT the current regardless of the voltage.
Never connect the 12V DC supply unless a resistor is fitted as the lamp will immediately fail and may explode causing injury.
Never use batteries to test LED’s unless the correct resistor is connected as the LED will immediately fail and may explode.
Do not be tempted to use one resistor on a “Common Return”. Different colours draw different currents and voltages. This will result in some not lighting at all and some “overrunning” and burning out early. You may also exceed the power rating of the resistor which could cause it to overheat.
The resistor should have adequate ventilation to prevent overheating. Do not cover it.
A regulated 12VDC supply is best. Note that auxiliiary supplies on Controllers are unregulated and will often give out much higher voltages than stated. 14- 20V is not unusual. This will at best cause LED’s to fail early and at worst will lead to overheating and possible fire risk. You MUST check the voltage of your supply to ensure it is correct.
Never stare directly into an LED