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simple microphone preamplifier – Circuit Schematic
simple microphone preamplifier
This is a simple microphone preamplifer circuit which you can use betw1een your microphone and stereo amplifier. This circuit amplifier microphone suitable for ...
simple car preamplifier and artificial earth – Circuit Schematic
simple car preamplifier and artificial earth
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simple circuit mini bicycle bel – Circuit Schematic
simple circuit mini bicycle bel
This circuit is a mini bicycle bell. Mini bicycle bell is connected using the bell as a switch. If the button is pressed, an electric current flowing on the 9V ...
simple hearing aid using transistors – Circuit Schematic
simple hearing aid using transistors
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audio voice over circuit using lm380 – Circuit Schematic
audio voice over circuit using lm380
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tremolo circuit – Circuit Schematic
tremolo circuit
 The tremolo circuit of the S950 is unique. The oscillator is a standard design, using half of a 12AX7: In the schematic above, the speed control is at lower ...
Microphone Mute circuit – Circuit Schematic
Microphone Mute circuit
The TS-440S, like probably a number of other radios, does not mute the microphone while you are using the rear audio connector for digital modes. So, unless you...
audio amp – Circuit Schematic
audio amp
Install the red LED at D2. Align the flat side of the LED with the PCB outline. Install a jumper wire at R4 and install a 220uF electrolytic cap at C8 with the ...
low cost audio headphone amplifier – Circuit Schematic
low cost audio headphone amplifier
Assembly is very straight forward, just follow the PC board overlay. Make sure you get the integrated circuit and the electrolytic capacitors the correct way ar...
hi fi stereo multiplexer for fm – Circuit Schematic
hi fi stereo multiplexer for fm
A Left and Right source of audio are first pre-emphasized (HPF) and then fed to adder circuits. The output of one adder is the sum of the two signals, or the L ...
6n3 5670 tube buffer – Circuit Schematic
6n3 5670 tube buffer
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usb audio multiplexer – Circuit Schematic
usb audio multiplexer
As you can see, the audio ground completely isolated from digital  ground. And I`m using top copper layer as a shield for both, audio and digital ground. Th...
hi fi stereo preamplifier circuit – Circuit Schematic
hi fi stereo preamplifier circuit
This Hi Fi stereo preamplifier ambit is congenital with TDA1054 IC from SGS. TDA1054 is a 16-pin DIL amalgamation and integrates 2 abstracted preamp circuits. I...
phono and line preamp – Circuit Schematic
phono and line preamp
I have been hacking the Dyna PAS chassis with various cascoded and cascaded phono circuits all employing negative feedback RIAA EQ in search for a circuit that ...
diy project actual good canon 5d audio – Circuit Schematic
diy project actual good canon 5d audio
Improving the Canon 5D Mark II audio so that it can produce usable production audio. The first part of any engineering effort is data gathering, so I set about ...
ring bell electronic circuit – Circuit Schematic
ring bell electronic circuit
This circuit produces oscillating frequency around 1kHz, and able to be converted by changing the value of resistor R1. The speaker will produce a long beep sou...
vu ppm audio metering – Circuit Schematic
vu ppm audio metering
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voltage controlled mixer wmodulator – Circuit Schematic
voltage controlled mixer wmodulator
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theremin controller – Circuit Schematic
theremin controller
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subwoofer equaliser – Circuit Schematic
subwoofer equaliser
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