Under reference Bois Modelisme 113001, here's a classic knocker, in various materials wood base, to scale HO 1/87th.
This is a magnificent lighted knocker to HO scale, offering a remarkable level of detail on your tracks. Quick and easy to assemble, the product is made up of clustered parts, with three-millimetre-thick MDF feet and bumper, as well as feet, lamp and its stand made of one-millimetre birch plywood. The purple diode wires are varnished to prevent short circuits.
Additional features for the diode:
- Type: 0603 pre-wired with enamelled wires.
- Colour: purple.
- Wire length: 140 mm.
- Wire cross-section: 0.5 mm.
- LED dimensions: 1.6 mm x 0.9 mm x 0.4 mm.
- Luminous intensity: 600 mcd.
- Consumption: 20 mA.
- Threshold voltage: 1.9 Volts.
- Advised supply voltage: 3 Volts.
Help with calculating the resistance depending on your supply voltage:
The value of the resitance R (in Ohms) to be placed in series is equal to:
R = (Valim - 3) / 0. 02
with Valim: your supply voltage.
Example: supply voltage of 12 V (Valim = 12V) the resistor to be placed in series at a value of 450 Ohms.
