Capacitor Discharge Unit CDU for Model Railway Points Motors

Micro Miniatures | Model Railways |  Capacitor Discharge Unit CDU for Model Railway Points Motors


Model Railway Capacitor Discharge Unit


Point motors require a considerable amount of current for their operation.
These high currents can damage switches and indeed cause points motors to over heat and burn out.
A Capacitor discharge unit gets over this problem by supplying this high current as a high energy pulse
to the points motor solenoid which in turn operates the points.
When a switch or push button is operated it completes the circuit and the power in the capacitors is released as a pulse. This pulse is typically around 50ms, but it carries a big punch.
As this pulse is short it avoids the problem of motor burn-out, the current burst is over by the time the switch contacts open, thus eliminating the back EMF which can weld the switch contacts together.
After the pulse has fired the CDU will not allow recharging of the capacitors until the switch reopens or is released.
Then the cycle can start again with the capacitors recharging.
We have several versions which should cover every requirement of the railway modeller


Heavy Duty Capacitor Discharge Unit with 19 volt 2.6 amp Power Supply

Ref: MM-100-204

Heavy Duty Capacitor Discharge Unit with 19 volt 2.6 amp Power Supply
19.99

Click Image for more Details


Quantity:

Product Details
Heavy duty CDU using twin 4700uf capacitors.
Supplied with its own dedicated 19 volt 2.64amp power supply and UK mains lead.
This is extremely powerful and will switch four single points or two crossovers at the same time.


### Order before 2pm for same day dispatch ###

Mega Capacitor Discharge Unit Quad 4700uf

Ref: MM-100-203

Mega Capacitor Discharge Unit Quad 4700uf
15.95

Click Image for more Details


Quantity:

Product Details
A Capacitor Discharge Unit (CDU) provides a reserve of charge to ensure that a good voltage is available to throw point motors.
Especially useful when several motors are thrown by one lever, setting cross-overs for example.
This CDU will throw 6 sets of point with ease.

The unit stores up power in capacitors and when a point motor is actuated, discharges in one big punch giving the point motor a firm and positive switching action. Prevents burnt out motors
Quad 4700uf Capactors. Input: 16v to 24v A.C.


### Order before 2pm for same day dispatch ###

Heavy Duty Capacitor Discharge Unit Twin 4700uf

Ref: MM-100-202

Heavy Duty Capacitor Discharge Unit Twin 4700uf
12.95

Click Image for more Details


Quantity:

Product Details
A Capacitor Discharge Unit (CDU) provides a reserve of charge to ensure that a good voltage is available to throw point motors.
Especially useful when several motors are thrown by one lever, setting cross-overs for example.

The unit stores up power in capacitors and when a point motor is actuated, discharges in one big punch giving the point motor a firm and positive switching action. Prevents burnt out motors.

Twin 4700uf Capactors. Input: 16v to 24v A.C.


### Order before 2pm for same day dispatch ###

HD Capacitor Discharge Unit with 24V Power Supply

Ref: CDUHD24AC

HD Capacitor Discharge Unit with 24V Power Supply
25.52

Click Image for more Details


Quantity:

Product Details
A Capacitor Discharge Unit (CDU) provides a reserve of charge to ensure that a good voltage is available to throw point motors. Especially useful when several motors are thrown by one lever, setting cross-overs for example.

The unit stores up power in capacitors and when a point motor is actuated, discharges in one big punch giving the point motor a firm and positive switching action. Connected to points via switches or probe and studs. Prevents burnt out motors.


This product was designed by us and is still currently manufactored by us.
We are therefore able to offer full technical telephone/email support if required.




### Order before 2pm for same day dispatch ###

Capacitor Discharge Unit Twin 2200uf

Ref: MM-100-201

Capacitor Discharge Unit Twin 2200uf
9.95

Click Image for more Details


Quantity:

Product Details
A Capacitor Discharge Unit (CDU) provides a reserve of charge to ensure that a good voltage is available to throw point motors. Especially useful when several motors are thrown by one lever, setting cross-overs for example.

The unit stores up power in capacitors and when a point motor is actuated, discharges in one big punch giving the point motor a firm and positive switching action.
When connected to points via switches or probe and studs. it will prevent burnt out motors.

Twin 2200uf Capactors. Input: 16v to 24v A.C.


### Order before 2pm for same day dispatch ###

Micro Miniatures | Model Railways |  Capacitor Discharge Unit CDU for Model Railway Points Motors