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

Amplifier -- Main Page

Last Updated: October 24, 2017 02:54 PM

Circuits Designed by Dave Johnson, P.E. :

High Speed Light Detector from FET Input   -  This circuit is yet another design that converts current from a PIN photo diode to a voltage.  It has a bandwidth that extends beyond 50MHz . . . Hobby Circuit designed by Dave Johnson P.E.-June 17, 2000

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

Hammonator 2RVT -  18 watt tube amp with reverb; adds pitch-shifting vibrato and tremolo __ Designed by G. Forrest Cook

Hammonator AO-14 Organ to Guitar Amp Conversion -  18 watt tube amp with reverb; adds pitch-shifting vibrato and tremolo __ Designed by G. Forrest Cook

Headphone Monitor Amp -  Computer soundcards typically have line level and speaker level outputs.  Neither of those is usually nott very suitable for driving headphones: If you connect the headphones to the line level output you will usally loose tha bass frequencies because of small coupling capacitors.  Line output circuitry might be overloaded because of too low input impedance and this can cause distortion __ Designed by John Simonton

HF 10 watt amplifier for 18MHz using a 2SC1969/2SC1944 transistor -  Ham RadioAF AmplifiersThis project and your efforts will provide you with a 0.55  3 watt input to easily 10 watt output.  The two linear amplifiers are ment for use with QRP SSB/CW/FM/AM transmitters on the amateur bands 15 and 17 meters can be powered from a 12 volt DC supply.  The design is a good balance between output power, physical size __ Designed by Guy Roels ON6MU

HF 10W Power Amplifier -  Schematic only __ Designed by va3iul

HF 5-band MOSFET power amplifier delivering 25 watts using a IRF510 -  Ham RadioAF AmplifiersThis project uses a widely available IRF510 MOSFET.  This N-Channel enhancement mode silicon gate power field effect transistor is an advanced power MOSFET designed, tested, and guaranteed to withstand a specified level of energy in the breakdown avalanche mode of operation __ Designed by Guy Roels ON6MU

HF linear Amplifier with MRF454 -  100W HF Linear AmpSchematic only, no circuit description __ Designed by © 2001YO5OFH, Csaba Gajdos

High dynamic range RF Amplifier -  Schematic only, no circuit description __ Designed by © 2001YO5OFH, Csaba Gajdos

High efficiency, legal limit, solid state linear HF Amplifiers -  Not a project yet, but very theoretical thoughts about very practical amplifiers! __ Designed by Manfred Mornhinweg

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

High quality audio preamplifier (OPA2134) -  An audiophile quality preamp, with full switching and programmable gain __ Designed by Rod Elliott  ESP

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

High Speed Light Detector from FET Input -  This circuit is yet another design that converts current from a PIN photo diode to a voltage.  It has a bandwidth that extends beyond 50MHz . . . Hobby Circuit designed by Dave Johnson P.E.-June, 2000

High Speed RGB to YPBPR Converter -  An LT6559 and an LT1395 can also be used to map RGB signals into YPBPR component video.  The LT1395 performs a weighted inverting addition of all three inputs.  The LT1395 output includes an amplification of the R input by –324/1.07k = –0.3.  The amplifi cation of the G input is by –324/549 = –0.59.  Finally, the __ Linear Technology/Analog Devices App Note, Mar 25th 2010

High-Power Amp Includes Disable -  03/03/97 EDN-Design Ideas If you need a wideband, high-current analog driver that can also switch its output to a high-impedance state, you can use a triple or quad amplifier with a built-in disable feature (Figure 1).  Relays are often too slow to be a viable option, CMOS switches cannot handle currents of 100 mA, and building a power MOSFET switch takes a moderate number of parts, especially if the switch needs to be compatible with TTL/CMOS logic. __ Circuit Design by Stuart Smith, Elantec Inc, Milpitas, CA

High-Voltage, High-Frequency Amplifier Drives Piezoelectric PVDF Transducer -  24-Jul-08 EDN-Design Ideas Finding wide use in nondestructive testing, a high-voltage, high-frequency amplifier drives a piezoelectric PVDF transducer __ Circuit Design by Enrique Vargas, Sergio Toral, Vicente González, and Raúl Gregor, Universidad Católica Nuestra Señora de la Asunción, Itapúa Antequera, Paraguay

High-voltage, low-noise DC/DC converters -  08/07/08  EDN Technical Article: You can make a 1-kV dc/dc converter with only 100 µV of noise. __ Circuit Design by Jim Williams, EDN's most revered contributor, passed away in June 2011 after a stroke.  He was 63.

Homebuilt MP3 Player -  Welcome to Frank’s website, home of the do-it-yourself MP3 player, a DDS based signal generator, and more.  For the MP3 player pages, including source code & schematics, please click on the photo below.  Or use the menu on the left. __ Designed by © © 2014 Frank Van Hooft

How to build Amplifier 2x30W with STK465 -  A amplifier of acoustic frequencies can be manufactured with discernible materials, despite is known so much the difficulties of finding of materials, what the problem of regulations.  These difficulties are overcome relatively easily if we find amplifier in form completed __ Designed by Kyriakos Kontakos

Hybrid vacuum tube/solid-state audio power Amplifier -  08/11/14  EDN-Design Ideas An audio power amp design that combines vacuum tube input circuitry with solid-state output and feedback components.   __ Circuit Design by Craig D. Merz

IF/RF Gain Block State-of-the-Art Performance the Easy Way -  Bandwidth has become more precious than gold.  As we push more and more data wirelessly through our smartphones, tablets, GPS, and video players, the spectrum has become more crowded.  Increasingly complex and efficient modulation schemes allow us to carry more MBits/mHz through the air.  However, the key to these demanding __ Linear Technology/Analog Devices App Note, Greg Fung-Senior Design Engineer Oct 4th 2012

Infinite melody for music synthesizers -  The name of this module is a play on its function.  Put simply, it generates a series of semi-random or themed stepped control voltages, or if you prefer, white and pink control voltages.  The pink function is probably better known as 1/f, and thus the name of "1l/lfinite melody". __ Designed by Ken Stone

Infrared Theremin Musical Instrument -  The constituents of the electronic circuitry in the invention are represented in the following figure, "Block Diagram of the Optical Theremin.  " Note that the interconnecting lines and arrows in the figure are representative of the signal process sequence, and not representative of specific electrical connections __ Designed by Arthur Harrison

Intercom with Musical Ringtone -  Here’s a low-cost two-way intercom circuit with musical ringtone that can be made using readily available components (see Fig.1).Melody generator IC UM66 (IC1) generates ringtone for the intercom circuit.  The __ Electronics Projects for You

Interface MIDI Instruments to a PC through a USB Port -  04/17/08  EDN-Design Ideas You can interface MIDI-equipped musical instruments to a PC via a USB port __ Circuit Design by Stefano Palazzolo, Senago, Milan, Italy

Ipod Stereo FM transmitter with 1W output power -  This project explain how you can build and connect a powerful 1W amplifier to your FM transmitters __ Contact: maxit91 @ hotmail.com

IR Music Transmitter & Receiver -  Using this circuit, audio musical notes can be generated and heard up to a distance of 10 metres.  The circuit can be divided into two parts: IR music transmitter and receiver.  The __ Electronics Projects for You

JFET matching fixture -  A circuit which can match JFETs for Vgs at a "typical" current, which produces good results for JFET-type phasers like the Phase 90. __ Designed by Guitar Effect RC Keen

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

 


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