Audio Circuits Archive

| June 21, 2014 Updated
Audio Circuits Archive

Electronic audio circuits archive, but actually different circuits have tried most of the tests are complete concentration on the audio circuit schematic and PCB Excludes all specified drawings prepared by eagle 3d görünümer added in some circuits

circuits archive list

Audio mixers Mixing BasesAudio mixers liabilities 001/002 Very simple without food (for beginners)

Audio mixer liabilities 003 A two lanes from a single command is also very simple and without
Audio mixer liabilities 004 (Stereo> Mono) Blending liabilities of two exits BF without adjustment To
switch between stereo in Mono for example
Audio mixer liabilities 005 Summons in any symmetrical 8 inputs 1 output
Audio mixer liabilities 006 Summons Transformer BF two entries asymmetric 1 output
Audio mixer assets 001 modular mixer 2 to 8 channels Gain and panoramic GMA correction on each
channel stereo output and headphone output
Audio mixer assets 002 mixer simple 4-way Based on double TL082 PDO (for beginners)
Audio mixer assets 003 simple mixer to 6 lanes Based on a NE5534AN PDO (4 lanes finished version
version 6 lanes unfinished)
Audio mixer assets 004 Mixer 4-way powered by battery 1 starter guitar 1 microphone input 2 line inputs
output line and 1 headphone

Audio mixer assets 005 Mini Karaoke 2 mic 1 line
Audio mixer assets 006 Mixer 4-way line-level single-supply 9 V
Audio mixer assets 007 Mixer 4-way line-level single-supply 15 V Mixer output for headphones Or How are two exits helmets

Preamplifiers Audio (line guitar microphone cell MD )

Line Preamp 001 balanced input output symmetrical gain a few dB
Line Preamp 002 Stereo asymmetrical entry exit asymmetrical gain a few dB
Guitar preamp 001 Simple based on a PDO and without correction tone (for beginners)
Guitar preamp 002 A bit more advanced with two independent balanced outputs (for beginners warned)

Based on PDO

Guitar preamp 003 A simple realization based on an FET (transistor field effect) type J201
Guitar preamp 004 Another simple based on a single PDO Rather an adapter that impedance preamp
Guitar preamp 005 Based on a type FET BS170
Guitar preamp 006 Based on a type FET BF245
Mic 001 A preamp very easy to achieve (5 components!) And unpretentious dynamic microphone for
asymmetric public
Mic 002 Improved version of the scheme mic preamp 001 asymmetrical
Mic 003 Another mic made simple based on a PDO type NE5532 unbalanced
Mic 004 stereo preamp based on LM381 unbalanced
Mic 005 stereo preamp based on a NE5532 unbalanced
Mic 006 mono preamp based on a TL061 low asymmetrical
Mic 007 mono preamp based on a SSM2017 and a SSM2142 symmetrical entrance exit symmetrical or
asymmetrical
Mic 008 mono preamp based on a NE5534 symmetrical entry for micro dynamic
Mic (-HP) 009 preamp for HP (speaker) plus a microphone preamp
Mic 010 mono preamp based on a NE5532 for a electret microphone
Mic 011 mono preamp (or stereo) based on LM387 for dynamic microphone
Mic 012 Outstanding Writing
Mic 013 Outstanding Writing
Mic 014 mono preamp based on a TLC251 very low 15 V supply
Mic 015 mono preamp based on a NE5532 for a electret microphone without capacitor liaison entry
Mic 016 mono preamp for use of a microphone capsule shot coal (old type phone) Not finished
Mic 017 mono preamp based on logic gates of a CMOS IC type CD4069 (yes)
Mic 018 mono preamp with little recovery BF transformer and two transistors
Mic 019 mono preamp with a transistor or a transistor and a PDO (two versions)
RIAA preamp 001 A classic stereo based on the use of a NE5532
RIAA preamp 002 A slightly improved version of the RIAA preamp 001 using NE5534
RIAA preamp 003 A simple version based on CMOS logic gates (yes)
RIAA preamp 004 A simple version based on current transistors
NAB Preamp 001 Editor stereo playback magnetic head based on LM381
Hydrophone preamp 001 Very easy to make based on a type PDO OPA37 Adding a pre-amp in a BF BF How to increase the sensitivity of entry and use the existing food BF existing amp

Audio Amplifiers

Headphone amplifier 001 Stereo running with single voltage power supply (battery 9V)
Headphone amplifier 002 Stereo running with power supply voltage symmetrical + /-15V
Headphone amplifier 003 Mono running with single voltage power supply (9V 15V)
Headphone amplifier 004 Mono running with power supply voltage symmetrical + /-8V
Headphone amplifier 005 Stereo running with power supply voltage symmetrical + /-12V and very easy
achieve (2 x LM741)
Headphone amplifier 006 4 stereo headphone amplifiers can be used with an audio source general or
individual Ongoing
Headphone amplifier 007 Stereo running with symmetrical voltage power supply (two 45 V batteries)
Headphone amplifier 008 Stereo running with single voltage power supply (15V to 24V)
Amp BF 001 10W 2 ohms based on the use of a TDA2003
Amp BF 002 40W 2 ohms (24W 4 ohm) based on the use of two TDA2003 mounted bridge
Amp BF 003 1W max 8 ohms based on LM386
Amp BF 004 3W 8 ohms only transistor (no special circuit)
Amp BF 005 a few tens of mW origin small portable radio cobbled together (which nevertheless keeps its
function)
Amp BF 006 A few hundred mW IC and transistors simple food 9V to 24 V
Amp BF 007 1W max 8 ohms based on LM386 with entry for guitar
Amp BF 008 Amplifier based on a TDA2006 (12W) TDA2030 (14W) or TDA2040 (20W) CI food simple single or double
Amp BF 009 5W 8 ohms based on two LM380 mounted bridge BF small amps Some small fixtures that can be heard a little better (for logic signals only)

Transport Switching Intercom Audio Settings

Audio Distributor 001 Distributor stereo audio 1 input 3 outputs unbalanced Alim simple version and version alim double to PDO
Audio Distributor 002 Distributor mono audio 1 input 3 outputs unbalanced Alim simple version while
transistors
Audio Distributor 003 Distributor mono audio 1 input 2 outputs symmetrical Alim simple version while
transistors
Symetriseur Audio 001 Conversion of output asymmetrical symmetrical robust output and low impedance –
version transistors
Symetriseur Audio 002 Conversion of output asymmetrical symmetrical robust output and low impedance –
version transformer
Symetriseur Audio 003 Conversion of output asymmetrical symmetrical output a simplified version with
NE5532 dual power supply
Symetriseur Audio 004 Conversion of output asymmetrical symmetrical output a simplified version with
NE5532 simple food
Symetriseur Audio 005 Conversion of output asymmetrical output symmetrical feeding food Phantom 48 V
Symetriseur Audio 006 Conversion of output asymmetrical output symmetrical version with SSM2142

Symetriseur Desymetriseur Audio 001 Fully liabilities based processors BF
Desymetriseur Audio 001 Conversion of entry symmetrical output asymmetrical with NE5532
Desymetriseur Audio 002 Conversion of entry asymmetrical symmetrical output high quality with OP275
Desymetriseur Audio 003 Conversion of output entry asymetrique symmetrical good with OP227
Desymetriseur Audio 004 Conversion of output entry asymetrique symmetrical good with NE5534
Desymetriseur Symetriseur Audio 001 Fully liabilities based processors BF
Phase Shifter Audio 001 An entry for two outings BF BF in phase opposition
BF Fixed Attenuator Attenuators liaison for asymmetric and symmetric connection
Audio attenuator 001 Attenuation variable stereo audio liabilities with mute very simple to achieve
Box of direct 001 Version passive (transformer)
002 direct box Version active (with operational amplifiers)
Selector 001 Selection of type 1 of 8 using eight pushbuttons
Selector 001c Model evolved selector 001 with two types of outputs and user presets
Selector 002 Selection of type 1 among 16 with two push buttons (Up Down)
Selector 003 Selection of type 1 among 6 with six buttons for wireless transmitters receivers (micro and PTT)
Selector 004 Selection of type 1 among 10 with a single button push for routing audio simple
Selector 005 Selection of type 1 among 6 with a rotary switch mounting entirely passive (no power required)
Switch HP Helmet 001 Hardcover output amplifier allows the orientation of HP or a helmet For low power
(<10W) Sound Switches Overview How to avoid CLOC and clicks when switching audio?
Switch Audio 001 An example of audio switch made from logic gates CD4066
Switch Audio 002 An example of audio switch made from a transistor FET
Switch Audio 003 An example of selector 1 among 3 by switching relays
Switch Audio 004 An example of selector 1 among 8 (expandable to 16) by switching relays
Switch Audio 005 An audio switch 2 inputs 1 output noise in transistors and simple food
Switch Audio 006 Mounting based switches (inverters) classic
Switch Audio 007 A 16-selector 1 output by switching relays
Switch Audio 008 A switch 8 inputs 1 output switching with CD4051 and display the selected entry on
display seven segments
Switch Mono Stereo 001 How to mono output stereo line
Switching inversion of two effects How to swap two effects audio without having any decabler? (with mechanical switch)


AB Box 001
A basic 2 1 output mechanical switching
AB Box 002 A variation of AB Box 001 with phantom power independently Not tested!
Adding a line-out How to add a line output on an amp that is not filled from a line level (volume pot)?
Adding a line-out on an HP How to add a line output on an amp that is not filled since amplified output
(HP)?
Adding a volume control How to add a volume between two devices?
Adding a setting Balance Panorama How to guide the signal BF more or less left or right?
Adding an external potentiometer How to deport a potentiometer internally without removing it
VAC 001 controlled voltage amplifier with discrete components
VAC 002 controlled voltage amplifier with discrete components
VAC 003 controlled voltage amplifier with AD633 two examples of use: with food and with food sym simple
Telephone and audio Recovery or sending a signal BF on analog phone line Loop 001 point: Release amp BF Point of arrival: small receiver with headphones
Intercom 001 Intercom bi-directional (full duplex) fairly easy to build
Intercom 002 Intercom half-duplex (one case while the other waits patiently)

Correctors compressors filters audio limiters

Tone correction
Corrective tone 001 Corrector tone bass treble liabilities (without food) very simple
Corrective tone 002 Corrector tone bass treble asset transistors simple food 12V
Corrective tone 003 Tone Corrector Graves Medium High asset PDO simple food 12V to 15V
Correcting physiological 001 Also called Loudness a first version
Correcting physiological 002 Also called Loudness a second version
Correcting physiological 003 Also called Loudness a third version
RIAA correction reverse 001 To connect a line-out on a phono input (passive model without food)
RIAA correction reverse 002 Same as the previous one but response curve more precise

Filters

Filter BF 001 Low-pass filter for low detection rhythmic
Filter BF 002 bandpass filter 300 Hz to 3000 Hz
Filter BF 003 Low-pass filter cutoff frequency variable (potentiometer or voltage)
Filter BF 004 Crossover 3-way (severe medium high) simple

Compressors and limiters

Audio Limiter 001 Excess NE571 audio modulation (figure not available on this site)
Audio compressor 001 Project in progress not fully tested!

Audio effects Bypass

True Bypass Relay 001 True bypass effects for guitar or “how to move from a triple inverter 3PDT?”
Reverb spring 001 A little-fashioned alongside the digital delay effects but
Stereo expander 001 Clone TDA3810
Tremolo 001 A tremolo unusual for beginners warned
Transposeur octave 001 Frequency Doubler-based diodes and PDO floor entrance FET guitar
Transposeur octave 002 Frequency Doubler-based diodes and transistors input stage for dynamic microphone

Display Actions (level phase counter decompteurs)

Display audio (meters cretemetres phase meters oscilloscopes)
Adding a meter How to add a meter with a needle or LED display or digital
Meter Design 001 Designing a meter to LEDs with voltage comparators
Meter Rectifier 001 An example of rectifier “perfect” for meter does not display the party To exit line
Meter Rectifier 002 Part recovery alone does not display the party HP To Release
Meter Rectifier 003 A rectifier with an analog output and output TTL To exit line
Meter 001 Meter needle based on the use of a PDO
Meter 002 Meter needle based on the use of a PDO
Meter 003 Meter needle based on the use of a transistor
Meter 004 Meter to 5 LEDs basic basic ideal to be the main but not professional for a penny
Meter 005 Meter to 8 LEDs 12V single power supply beach -18 dBu to +3 dBu
Meter 006 Meter to 270 LEDs (30 x 9) for a deco jukebox on an idea of Alexandra
Meter 007 Meter to 10 LEDs power supply 9V simple based LM3915 entry-level line
Meter 008 Meter to 10 LEDs 12V or 15V power supply symmetrical based LM3915 entry-level line (more
precise than the meter 007)
Meter 009 Meter to 10 LEDs 12V or 15V food simple based LM3915 entry-level line
Meter 010 Meter needle high-level entry (exit connection to HP amp)
Cretemetre 001 Easy to make with logic gates of a CMOS CD4011
Cretemetre 002 Easy to make in transistors
Phase Schedule redesigned from an output found on the net
Oscilloscope 001 Oscilloscope to 160 LEDs for viewing an audio signal

MIDI

MIDI interface 001 joystick port interface 1 MIDI input 1 output MIDI Through 2 MIDI
MIDI Merger 001 Version “not intelligent” without programmable
Distributor MIDI 001 1 MIDI input 4 MIDI (MIDI Through)
MIDI interface 001 joystick port interface 1 MIDI input 1 output MIDI Through 2 MIDI

Musical instruments various sound generators

Theremin Overview What me how it works in a very simplified!
Theremin 001 A Theremin very basic My first attempt I started simple Inconclusive
Theremin 002 Theremax of PAIA which I have already lost confidence
Theremin 003 SimpleTheremin described in the journal EPA
Theremin 004 Theremin simple basic logic gate CD4069
Piano Harp laser What a strange idea! Ongoing
Metronome 001 Sound and light (LED bulbs and sector)
Metronome 002 Basic 9V battery operation
Metronome 003 Less than 002 basic 9V battery operation and very stable
Siren 001 A basis of two ne555
Siren 002 With a CD4093
Siren 003 A transistors
Siren 004 With two LM3909
Siren 005 more complicated version of the siren 003
CrackleBox (kraakdoos) box crackles
Box noises 001 Sirens and other noises
Box noises 002 Sounds a little more varied with the noise box 001
Box noises 003 Noise from the SN76477 Ongoing
Box noises 004 A ne555 used a little different than usual
Generator percussion 001 4 sounds of percussion simple to build
Photosensitive sound generator A plate of LEDs used as light sensors to target with lasers
Audio oscillator for HP 001 rectangular oscillator for HP 25 ohms 12V power supply
Audio oscillator for HP 002 rectangular oscillator for HP 8 ohm 6V to 24V supply very very simple!
Oscillator for buzzer Piezzo 001 rectangular oscillator for Piezzo buzzer 9V supply output bridge

Audio generators

See next paragraph
Generators time bases BF HF (for tests or measures)
Audio Generator 001 Petit sinewave generator 1 KHz for controls (not measurements)
Audio Generator 002 Small generator 20 Hz to 20 kHz in three ranges square triangle sine based on
ICL8038
Audio Generator 003 Small stereo generator to two fixed and alternating tones based on a CD4093
Audio Generator 004 An improved version a bit of general audio 001
Audio Generator 005 A General BF two outings but same frequency output selectable in or out of phase
Audio Generator 006 A General BF two balanced outputs but even frequency output selectable in or out of
phase
Audio Generator 007 An injector signal BF running on battery 15 V 500 Hz 1 Vp-p
Noise generator 001 With the noise source an ordinary transistor Ssshhhh
Noise generator 002 Source experimental white noise and pink noise
Audio Generator crackles 001 crrr QC crrrr bad contacts With sound and light
VCO 002 A voltage controlled oscillator simple based on a ne555 range 200 Hz to 15 kHz fo experimentation
VCO 003 A voltage controlled oscillator simple based on a transistor UJT range 300 Hz to 3 kHz for
experimentation
VCO 004 A voltage controlled oscillator simple based on an IC type LM331 range 60 Hz to 10 kHz voltage
command 0-10V

Diğer Devreler

Detecteurs
Detecteur sonnerie reveil 001 Detection par raccord direct sur buzzer ou HP d’un reveil
Detecteur sonnerie reveil 002 Detection par raccord direct sur buzzer ou HP d’un reveil version plus
sensible et plus universelle que detecteur sonnerie reveil 001
Detecteur toucher 001 Interrupteur On Off a touches sensitives Version a deux touches : une touche On et
une touche Off
Detecteur toucher 002 Interrupteur On Off a touches sensitives Version a CD4011 une seule touche On /
Off
Detecteur toucher 003 Interrupteur On Off a touches sensitives Version a NE555 une seule touche On /
Off
Detecteur electrostatique 001 system allumant une led sur presence d’un champ electrostatique suffisant
Detecteur de mensonges Serieux ?
Detecteur impulsion mecanique 001 Avec buzzer piezo-electrique comme capteur de vibrations mecaniques
version AOP
Detecteur impulsion mecanique 002 Avec buzzer piezo-electrique comme capteur de vibrations mecaniques
version CMOS
Detecteur d’humidite 001 Avec tension alternative dans capteur a base de portes logiques
Detecteur d’humidite 002 Avec tension continue dans capteur a base transistor
Detecteur sonore 001 Un system allumant une lampe ou demarrant un magnetophone sur presence d’un son
Detecteur sonore 002 Un peu plus simple que le premier mais assez efficace aussi
Detecteur sonore 003 Un Model simple a base de transistors
Detecteur sonore de basses rythmique : voir Filtre BF 001

Temporisateurs Diviseurs Multiplicateurs
Temporisateurs
Temporisateur 001 Tres simple a base d’AOP Pour des temporisations de quelques secondes a quelques
dizaines de secondes
Temporisateur 002 Tres simple a base de CD4541 Pour des temporisations de quelques minutes a une heure
(ou plus)
Temporisateur 003 Tres simple a base de NE555 avec touches sensible (demarrage avec doigts)
Temporisateur 004 Tres simple a base de NE555 et alim secteur sans transfo sortie sur relais Activation sur
arrivee secteur
Temporisateur 005 Deux versions : un avec sortie verrouillee l’autre avec sortie temporisee

Diviseurs
Diviseur frequence 001 A base de PIC 16F84 facteur de division programmable de 1 a 1024 Frequence
d’entree max 30 KHz

Multiplicateurs
Multiplicateur frequence 001 Cinq composants courants pour une multiplication par deux d’un signal
rectangulaire bande 2 KHz a 20 KHz

Gadgets Jeux Utilitaires
Roulette 001 Une roulette a 12 leds avec indicateur sonore
Boite a lumieres 001 Un petit truc pour mes plus jeunes enfants
Bougie electronique 001 Simulation d’une lueur qui vacille
Chemin electrique 001 Jeux d’adresse où une boucle metalique ne doit pas toucher un fil electrique
Coeur clignotant Plusieurs leds disposees en forme de coeur allumage uniquement la nuit
RouleBoule Pour mes enfants En cours
Boitabak Aide pour le jeux “Le petit bac” En cours
Alarme 001 Une petite alarme simple a construire detection par ILS
Alarme 002 Une autre petite alarme simple a construire detection par presence ou absence lumiere

Lumiere (lasers jeux de lumieres)
Projecteur a leds 001 Projecteur a leds blanches 30000 mcd pour prendre des photos avec mon APN le soir
sans flash
Projecteur a leds 002 Une version un peu plus perfectionnee de mon projecteur a leds 001 la aussi avec des
leds 30000 mcd
Projecteur a leds 003 Version UV (Ultra-Violet) de mon projecteur a leds 002
Lampadaire multicolore Un lampadaire qui s’allume avec la couleur que l’on veut version avec NE555
Lampadaire multicolore 002 Meme chose que le precedent mais version avec PIC 16F84 (moins de
composants)
Bouquet lumineux 001 10 fleurs plastique qui s’allument l’une apres l’autre En cours
Ampoule 230V a leds Une “ampoule” 230V composee de 16 leds sans transformateur
Clignotant 001 Clignotant a trois leds alimentation par pile montage initiatique pour debutant
Clignotant 002 Sur secteur 230V a triac montage tres simple
Clignotant 003 Clignotant a led frequence clignotement progressive sur quelques secondes
Clignotant 004 Clignotant a deux lampes (leds ou ampoules incandescence) s’allumant et s’eteignant
alternativement
Clignotant 005 Clignotant type “flash” a une ampoule a incandescence alim 45V
Clignotant 006 Sur secteur 230V a triac alimentation avec condensateur et oscillateur a NE555
Clignotant 007 Clignotant “flash” a une led sur secteur 230V sans triac sans transistor sans circuit integre
Clignotant 008 Clignotant a ampoules ou leds pour velo (ampoules gauche et droite)
Chenillard 001 10 voies mode simple fonctionnant sur pile mode manuel (appui sur un bouton poussoir) ou
automatique (avec oscillateur)
Chenillard 002 6 voies mode simple fonctionnant sur pile avec fonction aller-retour
Chenillard 003a 8 voies plusieurs figures preprogrammees a base de PIC 16F84A fonctionnant sur pile avec
led
Chenillard 003c 8 voies plusieurs figures preprogrammees a base de PIC 16F628A fonctionnant sur pile
avec led
Chenillard 004 10 voies avec fonction aller-retour
Chenillard 005 10 voies fonction aller simple allumage instantane et extinction progressive des lampes style
“queue de comete”
Chenillard 006 10 voies mode simple avec maintien des dernieres lampes allumees
Chenillard 007 10 voies mode simple version secteur 230V du chenillard 001
Stroboscope a leds 001 A base de LM3909
Stroboscope a leds 002 A base de NE555 et CD4017
Stroboscope a leds 003 A base de CD4016 ou CD4093
Stroboscope a leds 004 A base de CD4011 avec panneau de 20 leds
Stroboscope a tube 001 Sur secteur 230V avec tube a eclat base de temps interne
Stroboscope a tube 002 Sur secteur 230V avec tube a eclat synchro externe (telecommande)
Gradateur de lumiere 001 La version “basique et simple” sans correction d’hysteresis et sans filtrage version
230 V
Gradateur de lumiere 002 La version “meilleur qualite mais plus complexe” avec correction d’hysteresis et
avec filtrage
Gradateur de lumiere 003 Gradateur a allumage et a extinction automatique
Gradateur de lumiere 004 Gradateur pour tube fluorescent Pas teste pas d’explication juste le schema
Gradateur de lumiere 005 Gradateur basse tension 12V de puissance avec commande externe 0V-5V
Gradateur de lumiere 006 Gradateur automatique a 3 Leds (RVB) generant une lumiere de couleur aleatoire
Gradateur de lumiere 007 Gradateur “basique et simple” sans correction d’hysteresis et sans filtrage version
24 V
Gradateur de lumiere 008 Gradateur commande par une tension continue externe 0V a +5V version 230 V
Gradateur de lumiere 009 Gradateur Marche Arret automatique version 230 V En cours
Gradateur de lumiere 010 Gradateur a touche sensitive base sur le S576
Interrupteur crepusculaire 001 Une lampe qui s’allume a la tombee de la nuit version basse tension avec
AOP
Interrupteur crepusculaire 002 Une lampe qui s’allume a la tombee de la nuit version 230V
Interrupteur crepusculaire 003 Une lampe qui s’allume a la tombee de la nuit version basse tension avec
transistors
Interrupteur crepusculaire 004 Une lampe qui s’allume a la tombee de la nuit autre version 230V
Veilleuse a led 001 Allumage et extinction automatique selon lumiere ambiante alim sans transformer
Piano lumineux 001 Gradateur automatique a allumage instantane et a extinction progressive version 12V
Piano lumineux 002 Gradateur automatique a allumage instantane et a extinction progressive version 230V
Modulateur de lumiere 001 Model 3 voies fonctionnant sur secteur avec transfo d’isolation en entree BF
Modulateur de lumiere 002 Model 1 voie fonctionnant sur secteur avec transfo d’isolation en entree BF
Modulateur de lumiere 003 Model 3 voies fonctionnant sur secteur avec microphone integre out
Modulateur de lumiere 004 Model 1 voies fonctionnant sur pile avec microphone integre out transistors
Modulateur de lumiere 005 Model 1 voies fonctionnant sur secteur entree niveau ligne isolation
Lasers Pour l’instant je commence out doux avec de simples diodes laser
Emission Reception Telecommandes (RF Ultrasons lumiere)
Emetteur FM 001 Emetteur fonctionnant sur pile 9V bande 88-108 MHz
Emetteur FM 002 Emetteur FM bande 88-108 MHz 1 mW oscillateur libre ou avec PLL Schema non
Attenuateur RF 001 Attenuateur resistif en Pi pour 50 ohms et pour 75 ohms
Attenuateur RF 002 Attenuateur multiple a cinq cellules (3 dB 6 dB 10 dB 12 dB et 20 dB)
Telecommande 001 A ultrasons base sur des transducteurs 36 KHz ou 40 KHz
Filtre RF Devrait interresser ceux qui recoivent la radio (en parasite) sur leur preampli ou ampli
Selecteur 003 Selection de type 1 parmi 6 a l’aide de six boutons poussoirs pour postes emetteurs /

Divers passe en cours
Anti-moustiques 001 Un Model perfectionne ça oui !
Anti-moustiques 002 Un Model moins perfectionne mais plus puissant : 20 W !
Ebow Vous savez ce que c’est ?
Gouac a mole Une chambre d’avocat moleculaire
Transformateur de Tesla Oh les jolies etincelles
Divers Un petit resume de quelques realisations passees (pas de schemas)
Realisations d’autres auteurs (explications astuces etc)
Pourquoi cette rubrique sur mon site ? Pour donner quelques explications pistes et conseils aux
veulent se lancer dans l’aventure C’est out !
Green Mic Preamp Analyse et aide a la construction d’un preampli pour microphone
Vu-metre pour preampli Green Vu-metre a 4 leds pour preampli micro Green

Source sonelec-musique.com

Published: 2008/10/11 Tags:



1 Comment “Audio Circuits Archive

  1. Electronics CircuitsElectronics Circuits

    230V 300W Lamp Sound Control

    We provide a simple and very inexpensive realizable Light organ for fast Plug & Play before use, the lamps with an output of up to 300 W “power” can. The control of the light organ is performed by a built-in microphone.

    That the timelessly popular light effect units not always large, expensive and tedious must be installed, which shows here example presented – a small light organ quasi for home use. The in practical plug and socket housing accommodated device is a Plug & Play Lighting effect, it is enough to start the simple plugging into a power outlet and attaching an almost any incandescent lamp up to 300W Power consumption. So at the party, virtually any Light in the room that would otherwise be silent before him lit for effect light are!

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