Preamplifier

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		Preamplifier

Preamplifier

Click here for documentation in pdf format

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	$13.68
10 – 99	$12.96
100 +	$11.88

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

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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	$11.54
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Microphone electret condenser 10mm di.

HB273

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1 – 9	$1.46
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Click here for specs, downloads, and more pictures.

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:		150

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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.

NOTE: Comes with driver board.

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

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Quantity Available:		12

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f6.0mm F1.6 Lens ONLY - as found on C328/C329 camera (BW) (no IR cut filter)

PLEASE NOTE: this is only the lens (NO 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 #		BB224L
Quantity Available:		18

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Stereo Preamplifier - Tone Control Unit

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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)

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1 – 9	$28.10
10 – 99	$26.10
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1 – 9	$13.68
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for this kit is 8 - 18V DC at 1 to 2 Amps.

PCB size 3"x1 3/4"(CPS143)

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