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Stereo Preamplifier - Tone Control Unit

Documentation in acrobat format (K100)

cps100.jpg
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$24.71
10 – 99$22.95
100 +$22.19

  (Kit - Basic Soldering Required)  
  CPS100  
  12  
 
 
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6 - 10W Stereo Ampl Mod using TDA2005
 
Kit 143 is a class AB stereo audio power
amplifier designed for quality hi-fi
applications using a TDA2005 module. It is
easy to construct and has a minimum of
external components. The module has output
current protection and thermal protection. This
is the data book circuit which produces an
excellent sound. The supply voltage required
for this kit is 8 - 18V DC at 1 to 2 Amps.

PCB size 3"x1 3/4"(CPS143)
Quantity
Price
1 – 9$18.81
10 – 99$17.82
100 +$16.34

  (Kit - Basic Soldering Required)  
  CPS143  
  15  
 
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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$17.67
10 – 99$16.74
100 +$15.35

  (Kit - Basic Soldering Required)  
  CPS105  
  6  
 
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50W amplifier module TDA7294
 
The heart of this amplifier module is a monolithic integrated circuit from SGS-Thomson, TDA7294. It is intended for use as an audio class AB amplifier in hi-fi applications. It has a wide voltage range and output current capability, enabling it to supply the highest power into both 4 Ohm and 8 Ohm loads. With the addition of a handful of parts and a suitable power supply, this module will deliver > 50W RMS into 8 Ohm @ 0.1% THD. HEATSINK NOT INCLUDED. User must supply a heatsink rated at 1.4 deg C/W.

Specifications (± 35V D.C. power supply)
Output power : > 50W RMS, 4-8 Ω load
~ 80W into 4Ω max.
~ 60W into 8Ω max.
Gain: 24 dB (30dB modification)
Input sensitivity : 1.3V for 50W, 8 ohm
0.9V for 50W, 4 ohm
(0.6V, 50W, 8Ω, G=30dB)
Input impedance : 10kΩ
Signal-to-Noise ratio : > 95 dB, (>105 dBA)
Frequency response : ~ 20Hz - 200kHz, –3 dB
Slew rate : > 10V/uS
THD : < 0.01%, 1W-40W,1kHz
< 0.1%, at 50W, 20-20kHz
IMD : < 0.01%, 1W

(CPS106)
Quantity
Price
1 – 9$31.49
10 – 99$29.25
100 +$28.28

  (Kit - Basic Soldering Required)  
  CPS106  
  8  
 
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1W Stereo Amplifier Module DC Volume con
 
This is a 1 watt stereo amplifier module Kit
using the TDA 7053A from Philips. It uses
a DC voltage to control gain, hence a
single gang pot or switch can be used as a
volume control with minimal tracking error. It
will operate from 4.5 – 18 V DC and requires
no heat-sink for normal use.
TPCB size 1 1/2"x1 3/4" (CPS139)
Quantity
Price
1 – 9$10.83
10 – 99$10.26
100 +$9.41

  (Kit - Basic Soldering Required)  
  CPS139  
  33  
 
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audio amplifier 1W (LM386) kit
 
A kit module designed to be used as a building block in a larger project. The semiconductor LM386 is a general purpose power amplifier designed for use in low voltage applications. Gain may be set between 20 and 200. LM386 data sheet included. Supply voltage: 4 to 12V(CPS17)
PCB size: 1.5in x 1.25in (38mm x 31mm)
Quantity
Price
1 – 9$10.83
10 – 99$10.26
100 +$9.41

  (Kit - Basic Soldering Required)  
  CPS17  
  21  
 
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Introduction to Class AB Amplifiers
 
Using amplifier modules is modern, quick and easy but it teaches nothing about how they work. Here is a Class AB amplifier made from individual components which will deliver several watts of power into an ordinary 8 ohm speaker. Gives hands-on learning about cross-over distortion, bootstrapping, complementary pairs, and push-pull. Detailed explanations given. Terminal strips are used for inputs and outputs. Use two 9 volt batteries. PCB Size: 2in (L) X 1.5in (W) (CPS48)
Quantity
Price
1 – 9$14.82
10 – 99$14.04
100 +$12.87

  (Kit - Basic Soldering Required)  
  CPS48  
  16  
 
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25W amplifier module LM1875
 
Kit contains the essential components to build a HiFi amp module using the LM1875 IC. See the documentation for full specifications. Heatsink, speakers and cables are to be supplied by the user.

This kit contains the essential components needed to build a high fidelity amplifier module using the National Semiconductor LM1875 IC. With the addition of a handful of parts and a suitable power supply, this module will deliver 25W RMS into 8 ohms @ 1% THD. PCB dimensions are a tiny 53 x 50mm (2.1” x 2”). Heatsink, power transformer, speaker and cables are not included.(CPS50)
Quantity
Price
1 – 9$17.10
10 – 99$16.20
100 +$14.85

  (Kit - Basic Soldering Required)  
  CPS50  
  7  
 
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Power supply voltage adj. 1.5 to 30V kit
 
This is a basic adjustable voltage power supply using the popular three pin regulator, LM317T. You can select any voltage between 1.5V and 30V using a potentiometer. The LM317T is rated at 1.5A so you must use a larger heat sink when drawing high currents. Unregulated AC or DC input via terminal block or power jack. Requires a suitable transformer.(CPS68)
Quantity
Price
1 – 9$12.54
10 – 99$11.88
100 +$10.89

  (Kit - Basic Soldering Required)  
  CPS68  
  15  
 
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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$12.54
10 – 99$11.88
100 +$10.89

  (Kit - Basic Soldering Required)  
  CPS115  
  19  
 
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