POWER SUPPLIES AND CONTROL
 

Catalogue #

Item

Price
K-AAA1 Automatic AA Ni-Cad Charger 13.40
PK-AAA1 P.C. Board only 3.35
See BD 679 Projects!
Charges AA Ni-Cads on a 5 hour or 14 hour rate with automatic shutoff.
Charges 600mA AA cells and 1.2AHr AA cells.

Board dimensions: 2.5 in x 1.8 in.
 

Catalogue #

Item

Price
K-BBPS1

Battery Backed Power Supply Module

19.45
PK-BBPS1

P.C. Board only

3.60

See Smart Security Devices Book 1!
A 12v 700mA power supply with a battery back-up feature for alarm systems.
The circuit charges and keeps a 12v gel-cell fully charged.
With an on-board LED to show if the battery voltage is low, and a test feature to let you know the condition of the battery.

Board dimensions: 3.0in x 3.0in.

Catalogue #

Item

Price
K-DPS1

Dual Power Supply

19.55
PK-DPS1

P.C. Board only

6.30

See Cover Projects!
A 1 amp power supply for +/-5v, +/-12v, or +/-15v.
 

 

Catalogue #

Item

Price
K-DTPS1 Dual Tracking Power Supply 27.20
PK-DTPS1 P.C. Board only 5.45
See Cover Projects!
A voltage adjustable dual power supply where the positive and negative rails are equal.

Catalogue #

Item

Price
K-EPS1 Economy Power Supply 16.45
PK-EPS1 P.C. Board only 4.20
See Electronics for Model Railways Book 2!
Low cost power supply can deliver 12v at 2 amps.
For projects that require a regulated power supply.
Extras needed:
15v 2A transformer
Mains lead
Fuse holder and 1/2A slow blow fuse.
Tag for earth
PCB mounting hardware
Wire
terminal block
sheet of aluminum

Board dimensions: 2.7in x 2.2in.
 

Catalogue #

Item

Price
K-FLI1 Fluorescent Lamp Inverter 9.45
See 6 BD 679 Projects!
Runs fluorescent tubes from 12v.
Drives two 20 watt tubes or a 40 watt tube.
 

Catalogue #

Item

Price
K-GPP1 Glow Plug Power Supply 21.05
PK-GPP1 P.C. Board only 3.95
See Learning Electronics Book 2!
A glow plug starter for model petrol engines. Delivers 1.5v at about 4 Amps which is required for a glow plug to operate.
Allows you to operate a glow plug from a 6v or 12v gel-cell or car battery, and supply a glow plug with sufficient current to make it glow - but not burn out.
Includes a Pot to slightly adjust the brightness of each glow plug.
Extras Needed:
Glow Plug Clamps And battery Clips.

Board dimensions: 2.0in x 1.9in.

Catalogue #

Item

Price
K-MSC1 Motor Speed Controller 11.25
PK-MSC1 P.C. Board only 3.00
See Security Devices!
Reduces the speed of a little motor without reducing the start-up torque.

Catalogue #

Item

Price
K-PS1 Power Supply 19.40
PK-PS1 P.C. Board only 5.00
See Electronics for Model Railways Book 1!
An adjustable 5v to 15v, 1 or 2 amp power supply.
This power supply has a very low output ripple and maintains a constant voltage over a wide range of current.
The project can be used as a bench power supply or mounted along side other circuitry on your layout.
Extras needed:
Fuse and fuse holder
15v 2A transformer
1k linear Pot and knob.

Board dimensions: 3.1in x 3.1in.

Catalogue #

Item

Price
K-PS2 Power Supply, 1 Amp 11.15
PK-PS2 P.C. Board only 3.40
See Issue 3!
A regulated power supply that can supply 5v - 15v at 1 amp.


 

Catalogue #

Item

Price
K-PPR1 Plug Pack Regulator 14.15
PK-PPR1 P.C. Board only 3.60
See Learning Electronics Book 2!
Turn a regular 6-18v AC or DC plug pack into a safe, regulated, variable power supply.

Board dimensions: 2.1in x 2.7 in.

 

Catalogue #

Item

Price
K-SPWM1 Simple PWM Throttle 26.20
PK-SPWM1 P.C. Board only 2.65
See Electronics for Model Railways Book 2!
A motor speed controller using Pulse Width Modulation. Output driven by a MOSFET.
A simple, high performance throttle, featuring a PWM FET output and a voltage controlled input.
The simplest version of the PWM throttle has two controls: speed and direction. Its even possible to remove the speed control pot altogether and use two push buttons in its place, one for accelerating and one for braking.
If computer control is what you are after, the throttle may be controlled either by a digital to analogue converter, or by selecting different voltage levels from a divider chain using 4051 analog multiplexer. In the second case, there will be only eight speeds available, but if the momentum circuit is used, it will smooth out the steps, making the transitions from one speed to the next undetectable.
Board dimensions: 2.1in x 1.9in.

Catalogue #

Item

Price
K-THR1 Throttle 18.80
PK-THR1 P.C. Board only 4.30
See Electronics for Model Railways Book 1!
A simple 2 amp throttle with a power transistor and heatsink all on board.
Kit includes a pot for speed control and a DPDT switch for changing direction or polarity across the tracks.

Board dimensions: 3.0in x 3.0in.
 

Catalogue #

Item

Price
K-THR2 Throttle MkII 7.60
PK-THR2 P.C. Board only 2.95
See Issue 6!
A simple throttle for model train control with power transistor mounted off board for small enclosures.

Catalogue #

Item

Price
K-2APS1 2 Amp Power Supply 12.15
PK-2APS1 P.C. Board only 3.85
See 6 BD 679 Projects!
A simple adjustable 0v - 12v power supply.

Board dimensions: 2.3in x 1.6 in.

 

Catalogue #

Item

Price
K-WAT1 Walk Around Throttle 38.20
PK-WAT1 P.C. Board only 6.90
See Electronics for Model Railways Book 2!
Gain some freedom with this radio controlled throttle.
Use a commercial radio control set for a true wireless throttle control.

Board dimensions: 2.8in x 4.0in.

Catalogue #

Item

Price
K-XEN4 Xenon Speed Controller 4 FET 51.40
K-XEN9 Xenon Speed Controller 9 FET 83.05
PK-XEN9

P.C. Board only (to suit both 4 and 9 FET models)

 6.00
Instructions Enclosed!
A professional speed controller for model cars capable of supplying a maximum of 270 Amps to heavy duty electric motors.