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DC TO PULSE WIDTH MODULATOR

Specifications

power supply: 8 to 35V DC
maximum output current: 6.5A
input voltage: between 2.5 and 35V DC
dimensions: 3.4" x 1.9" x 1.8"

Assembly Manual

Illustrated Assembly Manual

Info Sheet

Info Sheet

Info Sheet

k8004.jpg
This control circuit is ideal for the accurate control of DC motors, lighting levels, small heaters as well as other applications. The circuit converts a DC voltage into a series of pulses, such that the pulse duration is directly proportional to the value of the DC voltage. The great advantage of such a circuit is that almost no power is lost in the control circuit. Protected against overload and short circuit.
(K8004)  (Out of Stock)
 
Quantity
Price
1 – 9$19.48
10 – 99$18.09
100 +$17.49

  (Kit - Basic Soldering Required)  
  K8004  
  0  
 
 
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DC Motor Speed Controller
 
This kit will control the speed of any common DC motor rated up to 100V (7A). Operates on 5V to 15V. Uses a NE556 to pulse-width modulate a high current switching power transistor, IRF530 MOSFET. In this way motor torque is maintained. Adjustable speed control. (CPS67)
Quantity
Price
1 – 9$19.38
10 – 99$18.36
100 +$16.83

  (Kit - Basic Soldering Required)  
  CPS67  
  23  
 
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Bidirectional DC Motor Speed Controller
 
This kit allows controlling the speed of a DC motor in both the forward and reverse direction. The range of control is from fully OFF to fully ON in both directions. Normally, switches are used to change the direction of rotation of a DC motor. Change the polarity of the applied voltage and the motor spins the other way! However this has the disadvantage that a DPDT switch has to be added to change the polarity of the applied voltage. Now you have two things to control the motor – a direction switch as well as the speed control. Also, it is not a good idea to suddenly reverse the voltage on a DC motor while it is spinning. It can cause a current surge that can burn out the speed controller. Not to mention any mechanical stress it can cause as well. PCB size: 93mm x 42mm (3.625 x 1.625 inch) (CPS166)
Quantity
Price
1 – 9$24.23
10 – 99$22.50
100 +$21.75

  (Kit - Basic Soldering Required)  
  CPS166  
  31  
 
 
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Toy motor kit
 
Construct a working DC Motor. This clever kit has been delighting children for decades. All parts provided, including: 2 coils of copper wire; base; field pole; armature core; brushes; all fasteners. Instruction booklet with theory and experiments included.
Operates on 3 to 6 volt batteries (not included). (CPN135S)
Quantity
Price
1 – 9$5.45
10 – 99$5.25
100 +$4.95

  (Kit - No Soldering Required)  
  CPN135S  
  51  
 
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Square Wave Oscillator LN/NE555 (inc box
 
Simple circuit to generate square waves of approximately 1Hz 10Hz 100Hz 1KHz 10KHz & 100KHz. A square wave generator is one of those pieces of equipment that has many uses in the workshop yet few hobbyists actually have. This simple kit, based on the popular 555 timer IC, generates six preset frequencies from 1Hz to 100khz. It has an operating voltage range of 5 to 18VDC and even provides visual indication of the output. The kit is constructed on a single-sided printed circuit board (PCB). The PCB size: is 78 x 50mm (3.1" x 2") and will mount on a small plastic 'Jiffy' box. (CPS111)
Quantity
Price
1 – 9$13.68
10 – 99$12.96
100 +$11.88

  (Kit - Basic Soldering Required)  
  CPS111  
  32  
 
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Positive Adjustable Power Supply Module
 
Compact positive adjustable power supply +/- 1.5V to 35V depending on input power source. On-board heatsink. It is ideal for powering any application requiring a DC supply at current levels up to 1.5A
FEATURES:
· Output reverse polarity and back-voltage protection
· LED power on indication
· On board heatsink for IC regulator
· Variable output voltage
· AC or DC input voltage
· Low noise (uses linear regulator)
· Screw terminals for input, output and LED indicator
· PCB size: (84 x 37 mm) (3.1" x 1.5")
This kit can be combined with Kit CPS125 to create a dual-rail supply. The kit is constructed on a single-sided printed circuit board (PCB).
(CPS124)
Quantity
Price
1 – 9$14.25
10 – 99$13.50
100 +$12.38

  (Kit - Basic Soldering Required)  
  CPS124  
  9  
 
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5 Ultra Bright LEDs flash in 7 patterns
 
Five Ultra Bright LEDs flash in seven patterns. The modes can be cycled through using an on-board tact switch. When the desired flashing pattern is found move the PCB-mounted SPDT switch. The pattern will remain flashing as long as power goes to the board & the switch remains set. COB PCB size: 3x1.5 cm. Ideal for schools.(CPS37M)
Quantity
Price
1 – 9$7.98
10 – 99$7.56
100 +$6.93

  (Kit - Basic Soldering Required)  
  CPS37M  
  17  
 
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Relay Board for 5/10A Relay
 
Relay Board for 5/10A Relay(CPS43)
Quantity
Price
1 – 9$7.98
10 – 99$7.56
100 +$6.93

  (Kit - Basic Soldering Required)  
  CPS43  
  17  
 
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Regulated Power Supply
 
Kit accepts an unregulated AC or DC input. The user supplies a standard 3 pin voltage regulator from 5 volts (using a 7805) to 24 volts (7824). The full range of possible regulators is: 7805, 7806, 7808, 1810, 7812, 7815, 7818 & 7824. Large heat-sink provided. PCB size: 64mm x 40mm (2 1/2" x 1 1/2")(CPS60)
Quantity
Price
1 – 9$7.98
10 – 99$7.56
100 +$6.93

  (Kit - Basic Soldering Required)  
  CPS60  
  11  
 
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MINI 3 1/2 DIGIT DMM - 19 RANGES
 
Features

automatic polarity indication
voltage measurements: AC 500V and DC 500V max.
current measurements: DC 10A max.
resistance measurements: 2Mohm
diode and transistor (hFE) test
packaging: blister
(DVM810)
Quantity
Price
1 – 9$5.47
10 – 99$5.18
100 +$4.75

  (Assembled and Tested)  
  DVM810  
  11  
 
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