Digital Clock With 24 Hour Timer - Kit and Assembled Circuit Available

This digital clock with timer kit is an ideal option for use in homes and offices. The circuit is based on the LM8560 chip which is one of the most popular clock chips and incorporates a wide range of features such as alarm, snooze, and 24 hour timer (a relay can be connected to the PCB). The clock display is made up of a discrete array of 87 LEDs with digits measuring 2“ high.

Specifications:

• Supply voltage: 18V AC C.T. (2 x 9V AC) / 300mA (not included)
• 4-digit display
• Number of LEDs: 87 bright 4mm LEDs
• Digit height: 2" (50mm)
• Single board design
• Includes alarm melody generator
• Includes output circuit for external relay
• PC board dimensions: 8.84"L x 3.48"W x 1/2"H
• Speaker not included

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Headlight Warning Kit

This head light indicator may be set for one or two functions. To indicate that the head lights (or the side lights) should be switched off after switching off the ignition contact (battery protection). Or to indicate that the head lights should be on once ignition contact is switched on (obligatory in some countries).

Specifications:

• continuously repeated alarm tone for lights ON (may be disabled)
• repeated alarm tone for lights OUT
• only 3 wires are required for hook-up
• supply voltage: 12V DC
• PCB dimensions: 1.9" x 2.2"

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Learn To Solder Kit - Our Best Seller!

Why not introduce someone to the Exciting world of Electronics. This is a great introduction to a hobby that could lead to a career in the High Tech Industry. The kit includes a 30W soldering iron, diagonal cutters, solder, solder iron stand, printed circuit board, all components needed to build a flashing siren, and complete lesson plan. Complete with speaker and light emitting diodes. Finished circuit has an adjustable European Siren and flashing diodes.

We have sold thousands of these! Great for Schools, Clubs, Boy Scouts, Summer Programs etc. Fun for ages 10 through Adult.

Specifications:

• Includes all the tools needed to learn soldering.
• Includes a Printed Circuit Board and all components to build a working electronic siren.
• Includes a complete 10 page lesson plan and instruction booklet for easy integration into any electronics program.
• Requires 9 volt battery.
• Recommended for ages 10 and up (adult supervision required).

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This is a newer version of the original CK1616 which includes resets on the board so you can use a switch to reset the relay when using toggle mode. This is handy for applications like a garage door where you would want the motor to stop when the door is closed or open all the way.
This 4 channel remote control relay board is available as a kit or assembled unit. The relay board uses "Rolling Code" so it is nearly impossible to crack. Features pre assembled and aligned RF modules, pre assembled key-chain transmitter that only requires you to solder battery clips and case. Receiver requires component mounting & soldering. Receiver can "learn" up to 16 transmitters. Transmitters can be used with multiple receivers. 4 channel output with Single Pole Double Throw (SPDT) relays rated 10A @ 28VDC. Each output can independently be made latching (Push-on/Push-off) or momentary. Range exceeds 50meters. Transmitter uses 12V cell (included). Ideal for higher security garage doors, auto gates, electric locks etc.
Specifications:
Range is over 50 Meters (~150 feet).
Transmits on 433.9 MHz
Transmitter comes fully assembled and includes battery.
Receiver Power 12 VDC (power supply not included).(Need a Power Supply?)
Circuit draws 8mA in idle state, 1 relay energized 44mA, 2 relays 78mA, 3 relays 111mA, and 4 relays 144mA.
Relays have a Common, Normally Closed (NC), and Normally Open (NO).
Each Individual Relay is jumper selectable latching or momentary.
Relay Contact Ratings: 240VAC 7Amps, 125VAC 10Amps, 28VDC 10Amps, (more info on how relays work)
Has 4 resets for each relay.
Includes transmitter and receiver.
Transmitter Dimensions 2-1/4" L x 1-1/2" W x 1/2" H
Receiver Dimensions 3-3/8" L x 3" W x 1" H

This is a practical power supply for all your projects. Converts AC to DC power. It provides 6 different outputs between 6 and 20VDC @ 500mA. There are also 6 different size jacks to accommodate most projects and two alligator clips just in case there isn't a jack.
Note: This is not a kit, no assembly required.
Specifications:
L: 3-3/4" W: 2-1/2" H: 2-1/2".
Output Voltage: 6, 9, 12, 15, 18 or 20 VDC.
Output Current: Up to 500 mA.
Includes 6 different size jack connectors.
Jack can be reversed from center positive to negative.
Includes alligator clips for projects without power jack.
Includes 9 volt snap type connector
Input: 110VAC

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10 Channel Auto Roll RF Remote Control Relay Board

This ten channel Auto Roll RF Remote Control is virtually impossible to 'crack'. Ten channels that are selectable as either latching or momentary. Each relay has led indicators. Receiver can support up to 15 transmitters. This kit makes remote control very affordable for you next project.
Note: Transmitter has only 4 buttons, button combinations are used to control all 10 channels, see pdf file below for details.
Specifications:
Range is over 30 yards (120 feet).
Transmits on 433.9 MHz
Transmitter comes fully assembled and includes battery.
Receiver Power 12 VDC (Need a Power Supply?)
Relays are Individually latching or momentary selectable.
Relay Contact Max Current 1Amp, Max Voltage 60VDC or 120VAC. (more info on how relays work)
Relay has Normally Open and Normally Closed Contacts
Includes transmitter and receiver.
Transmitter Dimensions 2-1/4" L x 1-1/2" W x 1/2" D
Receiver Board Dimensions 4- 7/16" L x 3-5/16" W x 5/8" D

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60 SECOND DIGITAL VOICE RECORDER

With this advanced digital audio recorder/player, you can record up to 60 seconds of speech or any other audio with the built-in microphone and later play it back anytime. This unique design is made possible through the ISD25xx series of Integrated Circuits which store voice and audio signals directly, in their analog form, into a 480K Cell Nonvolatile Analog Storage EEPROM requiring neither analog-to-digital nor digital-to-analog converter. Recordings stored in this non-volatile memory cell last up to 100 years and therefore even if the supply voltage is disconnected, the recording will not be lost. Another unique feature of this circuit is a message looping mode of operation which continuously plays back the recorded message automatically. The circuit also incorporates a built-in audio amplifier so it can be directly connected to a speaker or connected to a power amplifier for greater output power.

Doorbell or entrance message. Greet your guests or customers with a welcome message.
"Watchdog" burglar alarm system. Record the barking of a dog and connect this circuit to a alarm system to deter burglars.
Toys applications where you need speech or audio effects.
Talking picture frames for personal or museum use. Add it to the back of a picture frame of a friend or relative to have his or her voice be played back at any time.
With the looping mode of operation, you can connect the circuit to one of our FM Transmitters in order to build a FM Announcement System or talking sign which is ideal for real estate applications.

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10 WATT x 10 WATT STERE0 AMPLIFIER

This class AB stereo audio power amplifier is designed for quality hi-fi applications using a TDA2009A module. It is easy to construct and has a minimum of external components. The module has output current and thermal protection. This is the data book circuit which outputs excellent sound. The supply voltage for this kit is 8 - 24V DC at 1 to 2 Amps. Maximum output power will only be obtained with a power supply of at least 20V and greater than 1.5 A, and using 4 ohm speakers. Powerful enough to power a stereo for a mid-sized room and more than enough for use in an automobile.
Specifications:
L: 3" W: 1-3/4" H: 1-1/2"
Requires external 8-24 VDC Power Supply(Need a Power Supply?)
Output up to 10 watts per channel

http://www.mediafire.com/?sharekey=cec59dfde689398ed2db6fb9a8902bda

Karaoke Kit

This neat little circuit will remove the vocals from most songs so you can add your own lyrics. Hooks up between your CD-player, MP3-player or any other line-level source and your amplifier RCA input and output jacks and a 1/4" ( 6.3mm) microphone jack, fits most microphones
Specifications:
Dimensions: L: 3.9" W: 3.3" H: 1"
Power: Requires 9 Volt Battery (not included)
Low power consumption (16mA typical)
Adjustable microphone level
Vocal remove on/off switch
LED power indicator light
See VEMK140.pdf for complete details, including schematic and theory of operation. Requires Adobe Acrobat Reader available at http://www.adobe.com/ for FREE!