Audio Pre/Power Amplifiers

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Preamplifier

A preamplifier to use with an electret or other microphone to boost the signal before feeding into an amplifier. Simple and easy to build. PCB Size: 1.75" x 1.25".
Power supply: 6 to 12VDC(CPS98)

Quantity	Price
1 – 9	$7.98
10 – 99	$7.56
100 +	$6.93

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS98
Quantity Available:		38

UNIVERSAL MONO PRE-AMPLIFIER

This kit has been developed as pre-module for a number of audio applications where there is insufficient input signal. Applications as a microphone pre-amplifier or for level correction.

Specifications

power supply: 10-30V DC / 10mA
output impedance: 1Kohm
adjustable output level: max. 40dB
frequency range: 20Hz to 20kHz ± 3dB
max. input signal: 40mV
PCB dimensions: 1.2" x 1.7"
options for power supply: K1823
(K1803)

Quantity	Price
1 – 9	$8.21
10 – 99	$7.78
100 +	$7.13

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		K1803
Quantity Available:		6

UNIVERSAL STEREO PRE-AMPLIFIER

Specifications

frequency range: 40Hz - 30kHz (-3dB)
max. input voltage: 50mVrms
adjustable gain: 40dB max.
output impedance: 1Kohm
power supply: 10-30V DC / 5mA
PCB dimensions: 1.7" x 2.6"
recommended transformer: K1823
(K2572)

Quantity	Price
1 – 9	$16.07
10 – 99	$15.23
100 +	$13.96

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		K2572
Quantity Available:		4

STEREO RIAA PRE-AMPLIFIER

RIAA stereo pre-amplifier for md pick-ups. Low noise.

Specifications
supply voltage: 10 -30V DC / 5mA regulated
gain (1kHz): 35dB
input signal: 5 - 10mV
input impedance: 47Kohm
PCB dimensions: 1.7" x 2.6"
(K2573)

Quantity	Price
1 – 9	$15.56
10 – 99	$14.74
100 +	$13.51

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		K2573
Quantity Available:		5

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	$20.35
10 – 99	$18.90
100 +	$18.27

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS100
Quantity Available:		10

TELEPHONE AMPLIFIER

This telephone amplifier may be used as a free-standing amplifier with speaker, e.g. to listen to a telephone conversation, or the output may be connected to an amplifier or mixing panel (e.g. radio stations).

Specifications
input: isolation transformer interface
speaker output: 0.5W / 8ohm
line output: 0dB (0.775Vrms)
power supply: 7 - 9V AC or 9 - 12V DC / 150mA
PCB dimensions: 2.5" x 2.1"
recommended housing: G416
recommended transformer: -
recommended adapter:
(K4900)

Quantity	Price
1 – 9	$11.80
10 – 99	$12.42
100 +	$10.25

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		K4900
Quantity Available:		6

1W Stereo Audio Amp Module KA2209 (ver 2

This stereo amplifier module uses the Samsung KA2209 8-pin IC. This is equivalent to the TDA2822. The circuit is the standard text-book circuit for this chip. No heat sink is required. 2-9 volt operation. (CPS87) (version 2)

Quantity	Price
1 – 9	$13.11
10 – 99	$12.42
100 +	$11.39

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS87
Quantity Available:		11

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)

Quantity	Price
1 – 9	$9.69
10 – 99	$9.18
100 +	$8.42

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS17
Quantity Available:		15

TDA7052 Amplifier Module 1W

A 1W power amplifier building block designed to be part of a larger project. Ideal as a low power battery operated amplifier (from 3 to 15V) driving an 8 ohm speaker. The Philips TDA7052 is a general purpose amplifier. No heatsink needed. Short circuit protected.(CPS27)

Quantity	Price
1 – 9	$9.12
10 – 99	$8.64
100 +	$7.92

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS27
Quantity Available:		22

1W Stereo Amplifier Module DC Volume con (Out of Stock)

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	$7.98
10 – 99	$7.56
100 +	$6.93

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS139
Quantity Available:		0

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	$10.83
10 – 99	$10.26
100 +	$9.41

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS115
Quantity Available:		23

3W Stereo Amplifier Module BA5406

A simple stereo 3 watt per channel amplifier based on the BA5406 power amplifier monolithic IC. Minimum component count. Runs on 12Vdc power supply. Good general purpose amplifier. PCB size: 67mm x 38mm. (2.6" x 1.5") Requires heatsink (supplied.)(CPS90)

Quantity	Price
1 – 9	$13.11
10 – 99	$12.42
100 +	$11.39

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS90
Quantity Available:		28

4W amplifier module LM380

This is a very simple amplifier built around the LM380 IC. It can deliver up to 4W into an 8 ohm speaker depending on the supply voltage. Instead of using a heatsink or heat fins the heat produced is dissipated through the center pins of the IC into the copper overlay left on the PCB. So there is NO IC socket used. The IC solders directly to the PCB.(CPS97)

Quantity	Price
1 – 9	$11.40
10 – 99	$10.80
100 +	$9.90

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS97
Quantity Available:		19

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	$11.97
10 – 99	$11.34
100 +	$10.40

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS48
Quantity Available:		20

7W MONO AUDIO AMPLIFIER

This small amplifier is constructed around the TDA2003 IC, capable of delivering 4Wrms at 4ohms. The IC is completely thermally and short-circuit protected. A conventional direct current can be connected as supply.
(K4001)

Quantity	Price
1 – 9	$13.34
10 – 99	$12.64
100 +	$11.58

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		K4001
Quantity Available:		5

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	$15.96
10 – 99	$15.12
100 +	$13.86

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS143
Quantity Available:		11

10W Stereo amplifier module TDA2009A

The TDA2009 is a class AB dual hi-fi audio amplifier IC designed for quality stereo applications. This is a standard data book application circuit using a minimum of external components. Each channel is capable of delivering 10 Watts into 4 Ohm speakers using a 24VDC supply voltage. PCB size: 3.58" x 1.81".
(CPS88)

Quantity	Price
1 – 9	$16.53
10 – 99	$15.66
100 +	$14.36

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS88
Quantity Available:		29

TDA2002 / TDA2003 Amplifier Module kit

A proven & popular power amplifier building block for use in any audio project. Power output is dependent on the supply voltage and load resistance. Over 10W is typical for a 16V supply into a 2 ohm speaker. A 12V supply into a 4 ohm speaker will deliver around 4W. Small heatsink provided. In late 2000 the LM383 was discontinued but the TDA2002 is a direct replacement for the LM383. (CPS47)

Quantity	Price
1 – 9	$14.25
10 – 99	$13.50
100 +	$12.38

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS47
Quantity Available:		22

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	$14.25
10 – 99	$13.50
100 +	$12.38

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS105
Quantity Available:		4

HA13118 18 W BTL Audio Power Amplifier Power IC

The HA13118 is power IC designed for component car stereo amplifiers. At 13.2 V to 4 Ω load, this power IC provides an output power of 18W with 10% distortion.

It is easy to design as this IC employs internal each protection circuit and the new small package.

(BB238)

Quantity	Price
1 – 9	$5.70
10 – 99	$5.40
100 +	$4.95

Skill Level of Item:		(Component or Part)
Product #		BB238
Quantity Available:		3

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	$13.11
10 – 99	$12.42
100 +	$11.39