Preamplifier

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Preamplifier

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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 (Electret microphone Included)

Quantity	Price
1 – 9	$10.83
10 – 99	$10.26
100 +	$9.41

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS98
Quantity Available:		24

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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)

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1 – 9	$10.95
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Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		K1803
Quantity Available:		14

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Microphone electret condenser 10mm di.

HB273

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1 – 9	$1.50
10 – 99	$1.26
100 +	$1.13

Skill Level of Item:		(Component or Part)
Product #		HB273
Quantity Available:		10

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SUPER STEREO EAR KIT

Stereo audio amplifier boosts sound 50 times. Great for the-hearing impaired (e.g. when watching TV), as a gadget, science project, … With volume control and on/off switch.

Specifications
power supply: 3 1.5V AA battery (not included)
dimensions: 2.4" x 2.1" x 1.7"
(MK136)

Quantity	Price
1 – 9	$7.87
10 – 99	$7.45
100 – 999	$6.83
1000 +	$6.45

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		MK136
Quantity Available:		136

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IR Cut-switch Device 5V (Device B)

IR cut filters are great for day time images, because the sunlight does not cause a pink hue in the image. However they do not work at night because it blocks out light from an IR light illuminator. The same it true in reverse, without a IR cut filter the night time images turn out very good but the daytime images have a pink discoloration. This cut switch allows the IR filter to be turned on and off. The IR Cut Switch filters out intensive light to create more beautiful and natural image color in either day or night.

Rated Current: 0.556A (AT input 5.0V)
Power Current: 2.78w (5.0 DCV Coil)
DC Resistance: Excite resistance 9Ω±10% (at 20℃)
Operating Voltage: Close → Open : 5.0V;200ms
   Open → Close : 5.0V;200ms.
Movable Temperature Range: -5℃~+50℃
Storage Temperature Range: -20℃~+60℃
Dimension: 27.55X27.5X10.6mm
AR Glass: AR Glass Specification:
   Glass shape:8.4*7.6mm(t=0.40mm)
   Wave Length(nm):400~1100nm
   Transmission(%):T>93%

Blue Glass: Blue Glas Specification:
   Glass shape:8.4*7.6mm(t=0.55mm)
   Wave Length(nm):625±10nm
   Transmission(%):T=50%

Quantity	Price
1 – 9	$24.81
10 – 99	$23.04
100 +	$22.27

Skill Level of Item:		(Assembled and Tested)
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Quantity Available:		19

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f6.0mm F1.6 Lens & holder ONLY - as found on C328 camera (BW) (no IR cut filter)

PLEASE NOTE: this is only the lens & lens holder.

Lens specs:
F/No 1.6
f= 6.0mm
FOV = 36 deg diagonal
IR cut filter : None

(BB224)

Quantity	Price
1 – 9	$10.95
10 – 99	$9.95
100 +	$8.95

Skill Level of Item:		(Component or Part)
Product #		BB224
Quantity Available:		12

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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
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Treble boost/cut ~ 15 dB at 15 kHz
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1 – 9	$24.71
10 – 99	$22.95
100 +	$22.19

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1 – 9	$17.67
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PCB size 3"x1 3/4"(CPS143)

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1 – 9	$18.81
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Skill Level of Item:		(Kit - Basic Soldering Required)
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Quantity Available:		15

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1 – 9	$13.68
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TPCB size 1 1/2"x1 3/4" (CPS139)

Quantity	Price
1 – 9	$10.83
10 – 99	$10.26
100 +	$9.41

Skill Level of Item:		(Kit - Basic Soldering Required)
Product #		CPS139
Quantity Available:		33

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1 – 9	$12.54
10 – 99	$11.88
100 +	$10.89

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Quantity Available:		15