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phono preamp – Circuit Schematic
phono preamp
Contents Introduction Two Versions RF Pickup Component Selection and Noise Sound Photo Gallery Introduction In support of the LM4562 opamp, National Semiconduct...
turntable sequencer – Circuit Schematic
turntable sequencer
This project has been on my mind since the very first time I attended a concert from `Institut fuer Feinmotorik`, a Germany based `Band` which is using turntabl...
guitar tuner – Circuit Schematic
guitar tuner
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adding vu meter to your computer – Circuit Schematic
adding vu meter to your computer
From a SONY double tape decks with model number "SONY TC-W230" I have picked a nice LCD VU-meter. I have decided to add it to my computer tower case. the follow...
multiplexer with limiter and low pass – Circuit Schematic
multiplexer with limiter and low pass
This is a design circuit for stereo encoder. This circuit is using BH1417 Stereo Encoder. This circuit using with pre-emphasis, limiter so that the music can be...
10 band equalizer – Circuit Schematic
10 band equalizer
The equalizer presented in this article is suitable for use with hi-fi installations, public-address systems. mixers and electronic musical instruments. The rel...
nescaf – Circuit Schematic
nescaf
It is more flexible than previous filters for QRP rigs. It has two panel-mounted controls ” a single center-detent potentiometer that sets the center frequenc...
sound Circuits – Circuit Schematic
sound Circuits
This is a slightly less professional-looking version of Handmade Electronic Music, with almost identical content (and free!). See in particular Chapters 18 and ...
basic equaliser – Circuit Schematic
basic equaliser
The second section of the TLC272CP is connected in a shunt-feedback configuration for medium-high input impedance and low output impedance. The gain of this cir...
vintage fuzz box – Circuit Schematic
vintage fuzz box
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space expander spring reverb – Circuit Schematic
space expander spring reverb
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Analog Equaliser – Circuit Schematic
Analog Equaliser
The time constant of R1C1 determines the low-cutoff frequency while the time constant of R2C2 determines the high cutoff frequency. The pass-band gain, Avpass=R...
STEREO MIXER – Circuit Schematic
STEREO MIXER
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compressor – Circuit Schematic
compressor
By now many audio DIYers would be familiar with "What Compressor ", a project that apparently had its origins in one man`s dissatisfaction with Alesis` 3630 com...
whistle responder – Circuit Schematic
whistle responder
The first two inverters contained in IC1 are used as audio amplifiers. IC1A amplifies consistently the signal picked-up by the small electret-microphone and IC1...
Sound Activated Toys – Circuit Schematic
Sound Activated Toys
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Dynamic Mic Preamp – Circuit Schematic
Dynamic Mic Preamp
A similar circuit can be used with an 8 ohm speaker but in that case you would put it in place of the emitter resistor. This circuit works as a carbon microphon...
diy tube buffered passive preamp – Circuit Schematic
diy tube buffered passive preamp
By sufficiently lowering output impedence of a circuit and supplying enough current to drive cables, it does not suffer the same problems as passive designs. As...
mini audio amplifier electronic – Circuit Schematic
mini audio amplifier electronic
IC TDA7052 is a mono output amplifier in 8-comng Head DI package (DIP). The device is designed primarily for battery-operated portable audio circuits. Features ...
simple stereo electret microphone preamplifier – Circuit Schematic
simple stereo electret microphone preamplifier
This design was born of frustration with the mic preamp in my Sony R91. It clips at ridiculously low levels, basically it has 28mV of headroom to deal with an i...