Model train speed control


Posted on Sep 9, 2012

Virtually any NPN small signal transistor may be used in place of the BC 108 shown. Likewise any suitable NPN power transistor can be used in place of the 2N3055. The output transistor must be mounted on a suitable heat-sink. Short circuit protection may be provided by wiring a 12 volt 12 watt bulb in series with the output


Model train speed control
Click here to download the full size of the above Circuit.

This will glow in event of a short circuit and thus effectively current-limit the output, it also acts as a visual short-circuit alarm.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Bridge balance indicator
Transistor Sensor Temperature Measurer
Loudspeaker Protector Circuit
FM TransmitterCircuit & Project Kits
RSX experiment
audio sine wave generator
LB1948M motor control driver electronic circuit design
AC RMS and DC converter circuit
Breaker control signal circuit manually



Top