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Frontline Hobby - Electronics

Audio Amplifer Kit (5 Watts) - Fully Assembled This circuit is a compact design AF amplifier based on the TBA810 Integrated Circuit. Its low consumption and compact dimensions make it ideal for all kinds of audio amplification applications. The circuit incorporates an overload protection circuit and volume control. In addition, the circuit has low/high impedance inputs which can be connected to any audio source.	Clearance Item - AM/FM Radio (Limited Stock) Perform alignment and many experiments without expensive test equipment. Experiment topics include amplification, dB, feedback, distortion, heterodyne, modulation, demodulation, detector and AFC. The state-of-the-art circuit and modern styling with LED tuning indicator, auto-off and comfortable headphones will give years of listening pleasure.	10 Watt Audio Amplifier This compact audio amplifier uses the popular TDA2003 Integrated Circuit which can deliver over 10W of music power into a 4 Ohm speaker. It incorporates a temperature compensation circuit so it is completely overload and short-circuit protected.	Color Organ Display Kit Build a low-budget musical light show with this single channel color organ using a very sensitive SCR. Have fun at parties and during the holidays. Use a string of 5 to 7 1/2 Watt Christmas lights. The intensity of the lights depends on the volume of the music. Make them for your neighbors or store owners. Quick to build and maintain. Everybody will love the lights that blink to the music.
Motion Detector Kit This kit comes complete with all parts, PC board, case schematic, and extensive training manual. It also includes an infrared detector, 3 integrated circuits, 16 resistors, 8 capacitors, 2 diodes, a switch, a speaker, a battery snap and cabinet parts. You can learn the basics of motion detector technology and have fun building this simple project. This battery operated kit adds safety to your home and office(can be used as a Sentry, Burglar Alarm, Movement sensor). The block diagram includes, Power Supply, Infrared Detector, Operational Amplifers & Filters, and a Tone Generator. It has a very good manual explaining its operation and theory. It gives many application examples.	Super Sleuth Kit Here's a super sensitive amplifier that will pick up a pin drop at 15 feet! An ideal general purpose amplifier too. Full 2 watts audio output is great for boosting low power receivers and radios, and when wired for high gain, makes an excellent room monitor or big ear shotgun mike amp... easy to listen in on "wild-life" both in the field and in the city! Recommended to be powered by a 6 to 15 VDC filtered power supply rated for at least 500 mAmps or batteries, drives any speaker.	Clearance Item - Digital Voltmeter / Ammeter (0 - 100V / 5A) (Fully Assembled) (Special Deal) (Limited Stock) This digital panel meter measures and displays both voltage and current and is based on a unique design using a single 3-digit display. An on-board slide switch is used to switch between the two values (voltage and current). When displaying the current, the letter 'A' is displayed after the value to visually indicate that the panel meter is in the ammeter mode. It measures DC voltages from 0 to 99.9V (resolution of 0.1V) and DC current from 0 to 5.00A (resolution of 10mA). Supply voltage: 12V AC C.T. @ 200 mA.	Flashing LED Kit For many applications such as model construction. Adjustable flashing speed with potentiometers RV1 and RV2.
Soldering Station - Temperature Controlled Here's the ideal soldering station for building your tool kit - but it'll work on any soldering job, big or small! Adjustable temperature lets you match the iron to the work for fast reliable connections and what a pleasure knowing you?ll never overheat a small circuit trace. If you've never used a good quality soldering station, you owe it to yourself to see just what a pleasure it is to use good equipment! This is the famous American Made, Weller brand, a name known for years as America's best! Includes one ST-3 tip!	Adjustable ON/OFF Cyclic Timer (Fully Assembled) A cyclic timer with independently adjustable ON and OFF periods. The ON and OFF periods can be adjusted via two PC board mounted trimmer potentiometers from a few seconds to approximately 30 minutes. It incorporates a relay which can handle loads of up to 3A @ 110V AC. Includes adapter jack. Supply voltage: 9V DC @ 100mA.	Clearance Item - Morse Code / Alarm Oscillator (Assembled) (Special Deal) (Limited Stock) This simple project is an audio oscillator based on the LM386 audio amplifier. It can be used in two different modes of operation: "Code" or "Alarm".	Advanced Stereo Tone Control Kit This kits provides controls for bass, treble, volume and balance using a DC reference voltage which eliminates all noises that are present in standard tone controls. The IC used is the TA7630. Comes with complete instructions and etched, silk-screened circuit board.
20 Meter QRP Linear Amp Kit Need a little extra boost for your QRP rig? This nifty little amplifier may be all you need. Believe it or not 20 watts is only 7db (about one S unit!) less power than a full sized commercial transceiver. These compact amplifiers are easily driven by any of our QRP transmitters or any other unit in the 1/2-2 watt range. Advanced power MOSFETs are used for the utmost in efficiency and purity, while a multistage low pass filter is used to assure a clean signal output. Power required is only 12 VDC at 2 to 4 amps, depending upon power output. Complete step-by-step instructions are provided which makes building the kit a breeze. The amplifier works well for all modes: CW, SSB and AM. Select the band of interest to you and don?t forget our custom matching case set for a complete station look.	1A Power Supply Kit This IC is a "floating" voltage regulator capable of delivering more than 1.5 AMP, for a voltage range adjustable between 1.2 and 35V. Apart from this particularly, this new IC has a remarkable better ripple and regulation properties than the known standard regulators. There is also a current limiter inside this IC, a thermal overload protection and a safe area protection.	Outgoing Phone Number Logger The logger records the start and stop time of ALL outgoing calls along with the number dialled (plus any other digits pressed during the call). It operates stand alone; no need for any connection to a PC. Telephone call data is output in a format that can be easily imported into Microsoft Excel. Various Excel functions can then be used to analyze and sort the data and produce formatted printouts. Data is stored in non-volatile EEPROM memory, so there is no loss of data in the event of a power failure.	Clearance Item - Light Beam Receiver/Transmitter with case (Special Deal) (Limited Stock) Kit includes separate receiver and transmitter modules for unlimited possibilities. Transmits a modulated infra-red light beam up to 30 feet without lenses, up to 1/4 mile using simple lenses. Since the beam is modulated with a 30 KHz carrier (like AM radio) there is no effect from 60 Hz hum that is produced by indoor lighting. Easily transmits through windows - ideal for ?bugs? or listening to IR television remote controls. The transmitter can use any type of mic and is very sensitive. The receiver employs an IR PIN diode detector and puts out enough power to drive any speaker or earphone. The PC board is cleverly ?scored? so you can easily separate the Transmit and Receive sections so they can be used individually to transmit at one location and receive at another. Units run on 9 to 12 VDC. Don?t forget our slick matching case set with red IR end panel.
Pathfinder Robot Kit 'Blinky' This amazing robot sees and follows a straight or curved path YOU make with a black marker or tape. Make the path as simple or complex as YOU want. The infrared emitter and light sensor circuit controls a servo feedback loop causing the motors to make course corrections: red and green LEDs blink to display changes in direction. Principles of electro-optics, analog & digital circuitry and more are covered in the 28 page Instruction Manual. Illustrated assembly instructions, many schematic & block diagrams, quiz and troubleshooting guide complete the Manual. Requires one 9V and two AA batteries (not included).	Clearance Item - Dynamic Microphone Mini Amplifier (Fully Assembled) (Limited Stock) This microphone amplifier is designed to work with dynamic microphones. It can be connected directly to a small speaker or headphone, or you can connect it to an audio power amplifier such as the CK003 or CK193/UK193 for more output power. Supply voltage: 9-12V DC @ 100mA. Includes 9V battery snap.	Clearance Item - Bullshooter Voice Storage Recorder Kit with case (Limited Stock) We've received a ton of calls from realtors and other people asking the same question...What do you have that will repeat a sales pitch all day long? Well, here it is, the BS-1!! Our latest kit combines a sweet new digital recording chip and a microprocessor to provide eight full minutes of high quality recording with endless loop playback capabilities. Well, actually there is no tape, or any moving parts, so its really not an endless loop...just acts like one, without the broken and spliced tape! Then we added an on-board high sensitivity electret condenser microphone to record your announcements on the spot. Then we added a built in audio amplifier with a front panel volume control to play back your announcements directly to an external speaker. Features dual line level mono outputs (RCA phono connectors) for connection to left & right stereo inputs on amplifiers and transmitters, line level input (RCA phono connector) for external line level input, and 2.5mm miniature phone speaker output. Perfect for everything from advertising real estate to repeating monotonous instructions at a swap meet! Easy one-touch pushbutton operation keeps everything simple...just push the record and play buttons and watch the LED indicators indicating which mode youre in. Its that simple! Runs on 12VDC. For that truly professional look, add our matching case and knob set (5w x 1 1/2h x 5 1/4d. If your pitch is getting deep...you better order the BS-1 today!	Fish Caller This device produces clicking sound that imitates distressed fish It features variable clicking rate and is battery operated.

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