An R/C switcher capable of switching currents of approx. 7 amps. An on-board LED gives a handy on/off indication. Ideal for controlling lamps, motors, LEDs, glow-plugs, etc, from any channel of your R/C transmitter.

A variation of the above switcher but with a latching on/off output. A TIP122 darlington transistor is employed, switching approx. 3 to 4 amps max.

Another variation of the R/C switch, only this time the output is used to switch on/off the plug on glow engines. The plug is ignited when the throttle stick is at idle, then turns off once the stick has advanced past the user-defined pre-set position.

A 3-way distribution panel for model boats. This unit incorporates 1 x fixed output @ 38 volts max. (ESC), 1 x fixed output @ 5 volts (Aux1) and one variable output @ 1.2v to 38 volts (Aux2). All-round fuse protection is included, along with visual (LED) indication of any blown fuse.

Built to specification, this one is based on the same design but differs in that it has just 1 x fixed output but now with 2 x variable outputs. The layout is also slighty different, employing swanky PCB-mount barrel-type fuse holders.

One of the chaps down at the model boating forum needed a gizmo that would operate a set of flanking rudders from his rudder stick while his gear switch was on, and then swap over to the main aft rudders with the gear switch flicked to off... which is where this little circuit enters the scene.
I guess could also be considered as a crude channel extender. The idea being that a non-proportional switched on-off channel (the gear channel?) is used to toggle two separate outputs. A spare fully-proportional channel (usually a stick or rotary control) is the source. One nice selling feature is the fast and clean switching between the two outputs... no unwanted servo jitter in this town.