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SOUND-TO-LIGHT UNIT

Specifications:
consumption: 0.5mA min. / 12mA max.
power supply: 9V battery (not incl.) dimensions: 1.6" x 2.2" x 1.4"

(Click here for the Manual)

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Four high-intensity LEDs light up and react simultaneously on every sound. For different funny and practical applications, such as : sound indicator, simple sound-to-light unit for music, for the hearing impaired : can be used to indicate the telephone, door bell. Adjustable sensitivity with potentiometer. Built-in microphone. (MK103)
 
Quantity
Price
1 – 9$4.79
10 – 99$4.54
100 +$4.16

  (Kit - Basic Soldering Required)  
  MK103  
  8  
 
 
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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  
  10  
 
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Electronic Projects 7
 
The newsletter describes how to construct your own 12V battery tester, the circuit uses a LM358 operational-amplifier as a voltage comparator. (VB062)
Quantity
Price
1 – 9$0.09
10 – 99$0.08
100 +$0.07

  (Book)  
  VB062  
  12  
 
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40 pin Univ ZIF Socket wide slot
 
Solder directly to PCB or plug directly into IC socket.
Screw mounting holes for more reliable operation.
(BB007)
Quantity
Price
1 – 9$12.95
10 – 99$11.95
100 +$10.95

  (Component or Part)  
  BB007  
  19  
 
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CAP 100nF Ceramic Capacitors 50 V
 
C100NC
Quantity
Price
1 – 9$0.26
10 – 99$0.22
100 +$0.17

  (Component or Part)  
  DB202  
  78  
 
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Stereo Preamplifier - Tone Control Unit
 
This is a preamplifier and tone control unit
which will make a useful addition to any
of our power amplifier kits. It is extremely
easy to construct due to the use of a special IC,
the Philips TDA 1524A. This contains all the
circuitry required to provide up to 20 dB of
voltage gain, +/-15 dB of bass and treble
control, channel balance, and a switchable
loudness contour.
Specification
D.C. Input : 15V DC supply or 12V DC battery. 50 mA min.
Maximum output : > 3 V RMS
Maximum input : > 300 mV, G = 20 dB
> 3V RMS, G = 0dB. Input Z > 10 k ohm. Output Z < 300 ohm
Frequency resp. : < 10 Hz to > 50 kHz + / – 1 dB
THD at 1kHz : < 0.1 % at 1V output
S/N ratio : > 80 dB, G = 0 dB
Bass boost/cut ~ 15 dB at 50 Hz
Treble boost/cut ~ 15 dB at 15 kHz
PCB size: 4 inches x 2 1/4 inches. (CPS100)
Quantity
Price
1 – 9$23.26
10 – 99$21.60
100 +$20.88

  (Kit - Basic Soldering Required)  
  CPS100  
  6  
 
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Electronic Music Box Engine
 
This kit is the electronic equivalent of a mechanical music box. Tunes are contained in an IC. Tunes are started by light falling on an LDR. Two music IC's provided. 8ohm 1 watt speaker included. Two IC’s are provided in this kit. M3481 contains 8 Christmas songs. M3485 contains 5 popular tunes: Hawaiian Wedding Song, Try to Remember, Aloha Oe, Love Story & Yesterday. PCB size: 43mm x 34mm (1.69inch x 1.34inch) Power supply: 3VDC (CPS104)
Quantity
Price
1 – 9$15.39
10 – 99$14.58
100 +$13.37

  (Kit - Basic Soldering Required)  
  CPS104  
  10  
 
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18W BTL Audio Power Amplifier
 
This kit contains the essential components to build a low voltage, high power mono 18W Bridge Tied Load (BTL) amplifier module using the Hitachi HA13118. The circuit is straight out of the data sheet. Only a few external passive components are required to make the module. The IC contains surge protection circuits and thermal shutdown circuits. The speaker and cables are not included. (CPS105)
Quantity
Price
1 – 9$16.53
10 – 99$15.66
100 +$14.36

  (Kit - Basic Soldering Required)  
  CPS105  
  11  
 
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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  
  30  
 
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1W Stereo Amplifier Module
 
Uses 2 LM386N-1 for a stereo amplifier. Ideal for walkman and other battery powered items. 4V - 12V DC. Instructions PCB and components supplied.

This is a 1 watt per channel, stereo amplifier module Kit using two LM386N IC’s from National Semiconductor. It is basically two of our CPS17’s on a single PC board, with a dual gang pot. It will operate best from 6-12V DC and will work well from a battery since the quiescent current drain is only 10 mA. It requires no heat sinks for normal use. The input and output are both ground referenced. Maximum output will be obtained with a 12V power supply and 8 ohm speaker, however it is particularly suitable for driving headphones from a supply as low as 4V. Speakers are not supplied. They should be rated at 3W or over. PCB size 63mm x 40mm (2.5" x 1.5"). (CPS115)
Quantity
Price
1 – 9$11.40
10 – 99$10.80
100 +$9.80

  (Kit - Basic Soldering Required)  
  CPS115  
  24  
 
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