Reviews Amplifier Circuits

Precision Power i1000.1 650W Class D Monoblock Amplifier

2-Ohm stereo, 4-ohm bridged full range operation.
Direct short, thermal, & overload circuits Protect amplifier.
200Mv-6v high level or low level RCA input.
Variable 12Db high, low, & subsonic crossovers / variable 12Db band-pass crossovers.

hf power amplifier，for QRP transceiver， Improve signal。Can be used both as a base and mobileunit,Extremely Small Compact and lightweight ， Full integration with the FT-817 using the supplied interface cable, The amplifier incorporates various protection circuits such as high VOLTAGE，front mounted LED display..
This amplifier can be successfully used with other QRP rigs such as the ICOM IC-703(and Elecraft KX3)..
YAESU FT-817ND Quick operating manual: 1. Connect power cord to DC power supplier, Red to "+", Black to" -" 2. Connect ACC cable to FT-817 ACC and amp 3. Adjustment “BAND ADJ” button， Select the band..
4. Connect antenna to amp "ANT" and "input" from FT-817 antenna out. Notice! The antenna you used that should well tuned, the SWR should less than 1:1.5 5. Open the power on both power supplier and AMP. The power indicate on. 6. Power on FT-817, the band indicate on Amp shoule be on..
7. Press PTT, the TX indicate on Amp should be on.Notice! If working on FM or SSTV for long operating time, should lower the output power on FT-817, say 2.5W or 1W..

Re-issue of the original Tung-Sol, built to the same “Special Tube Request” specs of leading amplifier manufacturers of the 1960s..
Rugged and reliable power tube for use in the most demanding guitar ampliﬁer circuits.
Platinum quad (4 tubes), computer-matched by manufacturer on proprietary equipment.

DESIGNED TO ELIMINATE NOISE: The NS20 Noise Suppressor eliminates unwanted noise and hum without altering car audio natural tone. It's the perfect pedal to quiet down any pedalboard or effects setup.
USED WITH AMPLIFIER OR EQ: Eliminate ground loop humming and buzzing noise between an audio source and an amplifier. When used with car audio, this isolation circuit goes between the head unit and the amp or EQ.
UNIQUE NOISE DETECTION CIRCUIT: Power supply noise of igniter produces filtration effect, make the sound effect is better This NS20 Unique noise detection circuit preserves the natural attack and envelope of an instrument's sound.
RCA PLUGS: When connecting it to your amplifier just plug in the RCA Jacks that fit your amplifier and plug the other end into your Stereo. Tried plugging the RCA cables that were connecting to the amp into it, as well as the radio RCA.
200W & 15A HIGH QUALITY: Keep Safe! The body item is covered by copper material, having high temperature and melting resistant function. Prevent the item from short circuits. Keep safe in your car.

Build over 750 experiments with 80 parts.
Experiments include: sound activated switch, Lie detector, adjustable light controller, Am radio, rechargeable battery and many more!.
Parts included: Photo resistor, power amplifier, variable capacitor, Analog meter, solar Cell, computer interface, full color manuals.
No soldering – no tools – it’s a snap! Snap Circuits parts require no tools and and click together to ensure solid electrical connections.
With the included software and pc-interface cable, your child can view waveforms and frequencies, just like an electronics engineer. How cool is that?!.
Our AWARD-WINNING product line of snap Circuits supports a vigorous STEM/ steam educational curriculum.
Learn by doing- designed for children ages 8 and over..

2-Ohm stereo, 4-ohm bridged full range operation.
Direct short, thermal, & overload circuits Protect amplifier.
200Mv-6v high level or low level RCA input.
Variable 12Db high, low, & subsonic crossovers / variable 12Db band-pass crossovers.

Professional performance amplifier with 80 watts of power.
Authentic tube amp sound and feel, realized with BOSS’s continually evolving Tube Logic approach.
Enhanced reactive drive power amp circuitry and carefully selected components throughout.
Custom Waza B12W 12-inch speaker delivers classic “blue bell” tone with rich lows, mellow mids, and clear highs.
Four analog Class AB power amp circuits, selectable for each channel: 6V6, 6L6, EL84, and EL34.

Built-in linear sawtooth oscillator with only two external oscillating components (resistance and capacitance).
Built-in power transistor provides 500mA drive capability.
Integrated all pulse width modulation circuits.

✡ [What You Get]: This set includes 85pcs IC chips, LM324, ULN2003, ULN2803, each for 5pcs. LM358, LM386, LM393, UA741, NE5532, NE555, PC817, each for 10pcs. They are placed in a transparent plastic box, easy to transport and storage..
✡ [Small component]: Our IC chips are small electronic components, small in size, they only take up very little space in the application. And the power consumption is low, can work normally with little consumption..
✡ [Easy to Solder]: Integrated circuits have fewer solder joints, and they can often be soldered in a few seconds. It should be noted that after welding, check carefully to confirm that there is no short circuit before turning on the power..
✡ [Long Life]: ICs are made of high-quality materials, they are very durable, can serve you for a long time. And the safety and reliability are high, not easy to fail, so you can use it with confidence..
✡ [Widely Application]: This IC chips can be used as low voltage quad operational amplifier, low voltage audio power amplifier, low power low offset voltage dual comparator, high gain operational amplifier, low noise dual operational amplifier, timer, photocouplers, high current drive array and Darlington arrays..