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Amplifier Circuits:  Power Circuits
Power Amplifiers:  #'s - C        D - K        L - P         Q - S        T - Z

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Last Updated: November 30, 2017 07:37 AM



Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

A 10 Watt RMS Amplifier -  A Very Simple 12.5 Watt RMS Power Amplifier, into an 8 ohm load and with the op-amp driver.  This was the Maximum output before Clipping on the Oscilloscope, using an 8 Ohm Resistive load. __ Designed by G.L. Chemelec

A 133MHz Differential Amplifier with External Gain Set, Impedance Matching to a 75Ω Source & Level Shifting -  Complete single ended 75Ω input impedance to differential out, level shifting 2.5V input to 1.25V differential common mode, single ended to differential gain of 2 using external resistors circuit example. __ Linear Technology/Analog Devices App Note, Oct 3, 2012

A 2-channel guitar preamplifier -  Each channel has bass, mid and treble controls and there's an optional digital reverberation unit as well. __ SiliconChip

A Closed-Loop, Wideband, 100A Active LoA - D -  Linear Technology AN133 __ Designed by Jim WilliamsOct 12th, 2011

A Direct Injection Box for Musicians -  Don't put up with hum.  This versatile DI box converts an unbalanced input to a balanced output signal and includes a 3-band equaliser. __ SiliconChip

A Nominal 10 Watt Power Amplifier -  A Very Simple 12.5 Watt RMS Power Amplifier, into an 8 ohm load and with the op-amp driver.  This was the Maximum output before Clipping on the Oscilloscope, using an 8 Ohm Resistive load. __ Designed by G.L. Chemelec

A PIC-Based Musical Tuning Aid -  This compact device will help you tune almost any musical instrumentacoustic or electronic.  It can produce any note on the tempered musical scale   (standard pitch) in any of the eight most commonly used octaves, with an accuracy of better than ?0.08% or 1.3 musical cents.  The selected note is compared with that from the instrument either by ear or visually by using an eight-LED stroboscopic beat indicator. __ SiliconChip

A Simple Circuit Capacitance Multiplier Power Supply for Class-A Amplifiers -  A basic circuit is provided in the article, but it is assumed that the builder knows all the pitfalls.  The supplied schematic is in fact for a capacitance multiplier filter   (not a regulator) , but is somewhat lacking   (I feel) and can be improved dramatically __ Designed by Rod Elliott  ESP

A Simple Circuit Musical Light -  The circuits for musical lights available in the market are highly expensive and based on microcontrollers.  Also, their programming is very difficult.  Here is a simple and cheap circuit for a __ Electronics Projects for You

A Tremolo Unit for Musicians -  Jazz up your music with this easy to build unit. __ SiliconChip

A440 Synth Tuning Crystal Controlled Oscillator -  A cheap little crystal controlled sine wave reference oscillator unit, for tuning your analogue synth to. __ Designed by Henry 

Acoustic Thermometry Measures Temperature to 0.1 Degree -  Start Clock Launches Acoustic Pulse into Measurement Path, Sets Width Decode Flip-Flop High.  Acoustic Paths Return Pulse, Amplified by Receiver, Trips Trigger, Resetting Flip-Flop.  Resultant Q Width Output, Representing Path’s Temperature Dependent Transit Time, is Converted to Temperature Reading by Microprocessor. __ Linear Technology/Analog Devices App Note, Apr 29th 2011

Active Antenna for HF-VHF-UHF -  This simple little circuit can be used for AM, FM, and Shortwave   (SW).  On the shortwave band this active antenna is comparable to a 20 to 30 foot wire antenna.    It is further more designed to be used on receivers that use untuned wire antennas, such as inexpensive units and car radios __ Designed by Tony van Roon  VA3AVR

Active FM Antenna Amplifier -  This simple little circuit can be used for AM, FM, and Shortwave   (SW).  On the shortwave band this active antenna is comparable to a 20 to 30 foot wire antenna.    It is further more designed to be used on receivers that use untuned wire antennas, such as inexpensive units and car radios __ Designed by Tony van Roon  VA3AVR

ADC Driver with Single-Ended Input to Differential Output -  The LT6350 is a rail-to-rail input and output low noise single-ended to differential converter/ADC driver featuring fast settling time.  It converts a high or low impedance, single-ended input signal to a low impedance, balanced, differential output suitable for driving high performance differential succesive approximation register __ Linear Technology/Analog Devices App Note, Mar 31, 2010

Add harmony to your systE - M -  07/20/00 EDN-Design Ideas Have you ever wished you could distinguish one device's operating state from anor's by sounds y make or that error states would sound harsh while normal operations would sound harmonious? By combining  NCO technique from a previous Design Idea  (Reference 1] __ Circuit Design by Eugene O -- EDN

Add music to your next project -  12/23/99 EDN-Design Ideas Adding music to your next design is as simple as using one I/O pin to drive the speaker and approximately 150 words of program memory to play the music.  You can store the musical notes and durations internally in program memory or externally in a serial EEPROM.  Frequently, implementing musical playback requires an external processor with memory or a specialized __ Circuit Design by Rodger Richey, Microchip Technology Inc, Chandler, AZ

AGC Amplifier (“Another Gain Clone”) -  My junkbox contains several NOS chip amplifier ICs   (TDA2003, TDA2030, TDA7262, TDA7296, LM386 and LM675T).  After a prolonged stay in the attic, I thought I should do “something” with them.  Mother Maria insisted that a stereo set should be built for son Henk who has left the home and is a student of mathematics at Groningen University.  Initial attempts at building a small stereo amplifier with TDA2030 ic’s were not very successful.  The amp worked __ Designed by Aren van Waarde

AM-FM-SW Active Antenna -  This simple little circuit can be used for AM, FM, and Shortwave   (SW).  On the shortwave band this active antenna is comparable to a 20 to 30 foot wire antenna.    It is further more designed to be used on receivers that use untuned wire antennas, such as inexpensive units and car radios __ Designed by Tony van Roon  VA3AVR

Amp based on a Silvertone Twin Twelve -  ampbased upon an old Silvertone Twin Twelve -- I decided to try another guitar amp   (actually, I intend to build two identical single 12" combo'sone for me and one for my TWIN brother, Rich).  Although I'm sure a Fender Deluxe knock-off would be just fine for what I needed , I wanted to do something a bit different __ Designed by Bob Danielak

Ampeg SB-12 Portaflex adapted for use as a bass overdrive stompbox -  When one thinks of classic bass amps, the brand name "Ampeg" often comes to mind.  Their SVT models were very popular and still are today.  Slightly less known Ampeg combo-type models were also made, called "Portaflex" amps.  In "travel" form, these appeared to be simple closed back speaker cabs with a pair of chrome latches on either side of the top panel.  When one released the latches, the top panel could be removed and flipped over to reveal a tube head unit.  One simply plugged in the attached speaker cable and the amp was ready to go.  The unique design led to the nickname of "Flip Tops." __ Contact: holler @ runoffgroove.Com

Ampli MOSFET -  DIY high power MOSFET amplifier200 Wrms 8 ohms -350 Wrms4 ohms / __ Designed by Edwin Paij

An ultra-flexible tonestack with clean boost. Schematic, photo & PCB/perfboard layouts. -  The Tonemender is a very flexible, yet simple clean boost with a 3-knob tonestack that allows the user to re-create the classic Fender, Marshall and Vox responses.  We suggest using a TLC2272 for the dual op-amp.  The TLC2272 is rated for low-noise and rail-to-rail output, which will offer the highest possible clean boost and dynamic range.  The NE5532 is another good choice, but a TL072 can also be used with decent results __ Designed by holler @ runoffgroove.Com

AN1282 Nanosecond, .1% Resolution Settling Time Measurement for Wideband Amplifiers -  Linear Technology AN128 __ Designed by Jim WilliamsAug 16th, 2010

AN133A Closed-Loop, Wideband, 100A Active LoA - D -  Linear Technology AN133 __ Designed by Jim WilliamsOct 12th, 2011

AN47High Speed Amplifier Techniques -  Linear Technology AN47 __ Designed by Jim WilliamsAug 1st, 1991

AN-60-009  High IP3, wide band, balanced linear power Amplifier HELA-10 -  AN-60-009  Application Note __ MiniCircuits.com

AN-60-033  Enhanced Linearity in the HELA-10 Power Amplifier -  AN-60033  Application Note __ MiniCircuits.com

Analog MIDI Synthesizer -  Schematic only, no circuit description __ Designed by John Simonton

Arduino MIDI interface (Arduino MIDI Drum Kit & Spooky Sound Trigger) -  Here’s a quick project using techniques from this week’s class that turns an Arduino board and a few buttons and piezos into a MIDI drum kit or scary sound trigger.  Hide piezo sensors around the house during your Halloween party to trigger scary sounds when people walk around! __ Designed by todbbot blog

Audio effects: guitar phaser -  This circuit is a phaser circuit, as used in guitar foot-pedal effects.  It used 11 sections of op-amp such as LM324 but others will do.  The whole circuit works of a dual rail supply: +/- 9v.  The 0v rail is indicated by a chassis sign.  Make sure these supplies are well decoupled.  There is a spare section of one of the IC's which you could used to derive a center tap from an 18v supply. __ Designed by Richard Torrens

Audio Power Amplifier with Ne5534/А & Darlington Transistors with Up to 30w Of -  Introduction These days there a lot of audio power amplifiers in integrated circuits (ICs).But it is still interesting to produce audio power amplifiers with operational amplifiers (OAs) and with output power bipolar __ Electronics Projects for You

Automation Comes to the Harmonica -  11-Mar-11 -Design News:   Advanced Automation has been edging into our working lives for decades.  While most of the inroads made by automation have been in manufacturing, these technologies are being increasingly applied in entertainment.  Jon Sorkin has created a gadget that plays programmed songs with a harmonica. __   Gadget Freak-Case #182

Azabache -  An original overdrive inspired by classic Fender amps. __ Contact: holler @ runoffgroove.Com

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Power Amplifiers:  #'s - C        D - K        L - P         Q - S        T - Z


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