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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: November 30, 2017 07:37 AM

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

QRP HF Transmitter -  I am unable to use packet radio here in Sweden because a SYSOP will not allow me to use FBB software for a PMS system.  As a result all mail to and from me is deleted.  The solution is quite simple, log on to a BBS in another country via HF where they know how to set up a packet system __ Designed by Harry Lythall-SM0VPO

Remote-Operated Musical Bell -  This infrared light controlled 12-tone musical bell can be operated using any TV remote control.  It can be operated from up to 10 metres, provided the remote control is directed towards __ Electronics Projects for You

Retronome-A Versatile Analog Drum Machine for My Hammond Organ -  When I purchased my 1962 Hammond M-111 organ back in 2008, it was a vast improvement over my mid-1970s Yamaha BK-20B. The drawbar controlled tonewheel sound, augmented by the warmth of the vacuum tube amplifier, made the Yamaha pale in comparison. __ Designed by Stefan Vorkoetter

Rev 1 Guitar Reverb -  This is a circuit for a guitar spring reverb pedal, it has dry, wet, and drive controls for a wide variety of sounds.  With a decent reverb spring (tank) in overdrive, this circuit will produce an incredibly thick and grungy sound, build one and be the envy of all of your guitar playing friends.  This thing is fun to play through __ Designed by G. Forrest Cook

Rev 2 Guitar Reverb -  This is my second-generation guitar reverb circuit.  The fidelity is much improved over the earlier design, it is suitable for use as a front-end to a guitar amplifier.  This circuit features clipping indicators on the preamp and reverb recovery stages, allowing for the optimal gain settings __ Designed by G. Forrest Cook

RGB to YPBPR Component-Video Conversion -  Figure 15 shows a method of generating the standard definition YPBPR signals from an RGB source using a pair of LT6550 triple amplifiers.  It should be noted that to ensure Y includes a correct sync, correct syncs should be present at all three inputs or else added directly at the Y output gated 8.5mA current sink or 350Ω __ Linear Technology/Analog Devices App Note, Mar 25th 2010

Ruby is an "enhanced" version of the Little Gem battery-powered Amplifier (LM386 based Design) -  A refined and updated Little Gem amplifier. __ Contact: holler @ runoffgroove.Com

Screen-Driven Direct-Coupled Single-Ended EL509/6KG6 Stereo Amp -  The Svetlana EL509/6KG6 is a rugged beam tetrode with a plate dissipation rating of 35W.  It may be classified as a "sweep tube" because it was originally designed as a horizontal sweep amplifier for TV applications.  Its high sensitivity and efficiency allows for up to 15W output from a single tube.  As with any other beam tetrode or pentode, however, distortion in single-ended operation can be high.  Large amounts of feedback are generally required to reduce distortion to acceptable levels for audio reproduction __ Designed by Bob Danielak

SE 300B Amp -  The schematic for my latest SE 300B amp __ Designed by Bob Danielak

Set Your Lights to Music -  6-Aug-09 EDN-Design Ideas This circuit activates six ac outlets according in a logarithmic thermometer-code format, causing six to 12 strings of lights to flash on and off according to the level and tempo of music you are playing __ Circuit Design by Hanif Saeed, Maxim Integrated Products, Inc, Sunnyvale, CA

Signal Splitter -  A transformer isolated signal splitter that enables hum-free connection of one guitar to more than one amp as well as having a direct output.  The circuit is buffered to avoid signal loss. __ Designed by Guitar Effect RC Keen

Silent Metronome -  File contains several designs, please scroll to find this circuit.  The circuit below is a "silent" metronome that keeps the beat without becoming a member of the band.  The circuit flashes the 6 volt lamp at a rate set by the 20k potentiometer which can have a dial for setting the desired tempo.  Alternately, the potentiometer could be replaced with a rotary switch and selected resistors.  The lamp is an ordinary #47 bulb which will give good omni directional brightness but an LED and resistor could be used insteadtry a 100 ohm in series with a   high-intensity LED.  The batteries could be three C or D cells for good life.  This circuit could be used to generate "clicks" in a speaker but such metronomes are not particularly pleasing.  The ambitious might replace the lamp with a solenoid which taps on the wall of a hardwood box or wooden chime for a "professional" sound. __ Contact: Charles Wenzel of Wenzel Associates, Inc.

Simple  Stereo Power Amplifier with 7905 -  79xx is a widely known series of low-cost, fixed-negative-voltage regulators.  These integrated circuits are available with output current of 100-150 mA (L series), 0.4-0.5A (M series), up to 1A (standard series), __ Electronics Projects for You

Simple 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

Simple Circuit Bass Guitar Compressor -  An ultra simple compressor, ideally suited for bass guitar. __ Designed by Rod Elliott  ESP

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

Simple Circuit Class a Amplifier-10W audio output -  This page describes an antenna, a 1 watt final output stage, and a transformation network for radio experiments at 187 kHz __ Designed by J. L. Linsley Hood, M.I.E.E.

Simple Circuit Color Organ -  A simple, satisfactory Color Organ can be built with a handful of cheap components.  This design features: no mains supply transformer, built-in microphone and three widely adjustable frequency bands obtained by means of very simple, passive filters for Bass, Middle and Treble __ Contact: Flavio Dellepiane, fladello @ tin.it

Simple Circuit Colour Organ -  This is a simple, one lamp colour organ.  It is far less complicated then the Three Channel Colour Organ.  It is simply a lamp controlled by an SCR.  It can be built in a few minutes, and combined with other circuits to make some pretty neat effects. __ Designed by Aaron Cake

Simple Circuit Current Feedback Power Amplifier -  The amplifier shown here was previously incorrectly referred to as 'El-Cheapo'.  Thanks to a reader who had a copy of the original 1964 article, it was immediately obvious that my recollection was flawed in the extreme. __ Designed by Rod Elliott  ESP

Simple Circuit metronome using LM1458 -  No circuit description, schematic only __ CdS Electronic

Simple Circuit MIDI tester -  Sometimes when experimenting with different soundcards and MIDI interfaces it is useful to see if there is some data going in MIDI interface.  This can be easily tested with this adapter, which converts the midi signals to visible light pulses.  Just the circuit and plug it to the MIDI output of your computer.  When computer sends any midi data out, you see the LED flashing.  I found this tester very useful in testing homebuilt soundcard MIDI interface. __ Designed by Tomi Engdahl

Simple Circuit open source MP3 player with SD/MMC memory card support -  This is basically a crystal radio with an audio amplifier which is fairly sensitive and receives several strong stations in the Los Angeles area with a minimal 15 foot antenna.  Longer antennas will provide a stronger signal but the selectivity will be worse and strong stations may be heard in

Simple Circuit Timer Remembers Your Rhythm -  01/05/95 EDN-Design Ideas The unpretentious controller in Fig 1 remembers the interval between your pressing its start and stop buttons.  Thereafter, the controller switches the load on and off every day at the same times as you did.  You reset the controll __ Circuit Design by MS Nagaraj, ISRO Satellite Centre, Bangalore, Karnataka, India

Simple Circuit Transistor Organ -  This simple circuit can provide hours of enjoyment as you learn tunes, play duets or just make some really weird sounds by pushing all the buttons at once.  You have probably seen this circuit before, it is fairly common.  I have seen it in several __ Designed by Aaron Cake

Simplest Ever Amplifier Bridging -  A design for a simple add-on bridging adapter for stereo power amplifiers __ Designed by Rod Elliott  ESP

Singing Christmas tree based on Microchip PIC16F84 -  Microcontroller based electronic circuit __ Designed by Aleksander Stare


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