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In 1862, the British company Myers offered steam locomotive models in its catalogue for the first time. Later on, electrically driven types entered children bedrooms, starting and stopping in a quite rough, "unnatural" way. Nowadays, even whole families spend afternoons with the small, detailed coloured model railways, which are fully digital controlled. This allows behaviours extremely close to reality, in terms of realistic, "slow" acceleration and deceleration.

Thanks to miniaturized SMD components like Diotec's bridge rectifier MYS80, the superfast diode EGL1D and dual MOSFET MMBT7002DW, such digital drives can be built even on the smallest scale. The MYS80 measures just 3 mm x 3 mm and offers anyway an output current of up to 500 mA at maximum 80 Vrms input voltage. An ideal free-wheeling diode for the PWM controlled DC drive is the EGL1D with 1 A, 200 V and t_rr < 50 ns. Two MOSFETs in a single SOT-363 package allow to build a halfbridge at smallest board space requirement. The MMBT7002DW offers 60 V of Drain to Source voltage, a peak drain current of 800 mA, maximum R_DSon of 7.5 Ohm and allow for control by digital/logic level drivers.